4.75 out of 5 stars Except ZR1: 1984-1990, BBK Corvette 58mm Throttle Body (94-96 C4 LT1), BBK Corvette 58mm Throttle Body - LT-1 5.7L (92-93 C4), Corvette Weatherstrip Kit - Coupe Body 7 Pc. If so, go straight to a compression test of the offending cylinder. Slowly tighten the rocker adjuster while rotating the pushrod between two fingers. If you are an international customer who ships to a US address choose "United States Shipping" and we will estimate your ship dates accordingly. horse power increase is around 12 and a claimed 12.8 ft/pounds of torque. No tuning or fuel components provided. 106/108Dept VMSeffner, FL 33584(813) 661-9000www.antivenomonline.comBreathless Performance Products2070-F Tigertail Blvd., No. | to limit performance on the L98. It started life as a '96 LT4 Corvette bullet. Write a Review, Write a Review With the zero deck and the shave of the heads, the final compression ratio came out at 11:1. required. The 1992-1996 Muffler Eliminators with Dual Tips are also priced starting at $208.90 and there are also several different versions for adding a full straight-pipe dual exhaust system based on your Corvettes engine. Unique products you won't find anywhere else. Hypertech chip and replace your stock ECM PROM with it. Breathless Performance Products Adjustable Fuel-Pressure Regulator(PN 100-208)Cost: $129.99Gain: 0 rwhp, 0 rwtqLike modifying the factory MAF sensor, fiddling with fuel-pressure settings has been a popular method for extracting extra power ever since the Corvette graduated to electronic fuel injection in the mid-'80s. Do you know of another way to adjust the valves or have any other suggestions?Steve Summers. It's worth noting, however, that this cooling benefit all but disappeared in heavy traffic, a fact attributable to our car's stock fan programming. Whip It. Mencken once said, "The chief value of money lies in the fact that one lives in a world in which it is overestimated." INTERNATIONAL Customer Options, Summit Racing Equipment SpeedCard We're just not exactly sure how. All Rights Reserved. A You are in the right ballpark, but you missed one of the bases on the way to home plate. Mine is externally regulated, and the more powerful alternators are internally regulated, so how would I go about doing this upgrade? This prevents you from being stranded out on a cruise or a long road trip. 3-5 for the filter and another 3-5 for the opened up air filter cover. Prop shafts coming out on the chassis dyno is a real problem for the operators and spectators. But as soon as the shaft begins to bend, it's all over! AutoZone, right next to the turbo alternators. This generation also saw the return of the legendary ZR-1 trim, complete with supercar-besting performance. We were stunned when the Dynojet registered improvements of 9 rwhp and 7 rwtq-precisely what Mid America claims for the unit in its catalog. Also fits 1990 ZR1: 1991-1996, Corvette Weatherstrip Kit - Coupe Body 7 Pc. Stay Updated with Emails from Summit Racing. Looking to make a purchase or a shop to install? Driveshafts are made out of steel (1053), chrome-moly (4340), 6061-T6 aluminum, metal matrix composite (MMC) aluminum, and carbon fiber. It\s claimed Business Teacher by day and Car Enthusiast by all the time, Alex Sommers writes for CorvetteBlogger to share his passion while chasing his dream of becoming a full-fledged automotive journalist. CCC System Q I recently rebuilt the 305 in my '84 Camaro Z28. Questions? Performance parts for a car like the 1984-1996 Vette is a fairly inclusive category. With this air pressure you can pinpoint if the leak is through the intake valve, the exhaust valve, or a blown head gasket. Yes, the shaft will be a little pricey, but it will be a lot cheaper than another transmission-or a hospital bill. RPM and that is about where the restrictions in the intake runners start Sales Email [emailprotected]. Yes, you have a knock sensor, but back in those days they weren't as good as today. Backed by the strength and support of the industry leader, ProCharger offers you the greatest power potential and most choices for your 1992-1996 Corvette C4 (LT1, LT4). LT4 Engine Control System. It's a killer site, and you'll be there for hours playing with the calculators. the old sensor. change is relatively inexpensive and very easy to do. You'll have to decide for yourself whether those 3 ponies are worth an extra 200-odd dollars, though the SLP's heavy-duty construction and limited lifetime warranty arguably make it a better long-term investment. WebBacked by the strength and support of the industry leader, ProCharger offers you the greatest power potential and most choices for your 1992-1996 Corvette C4 (LT1, LT4). Will most likely be experimenting with alternative fuels such as 93 octane, race fuel, E85 fuel, and methanol supplemental fuel. LT4 Dry Sump Accessory Drive. Well, when we ran the engine in and set the timing at a very conservative 28 degrees total, the engine produced 441 hp through 211/42 dual exhaust! It is certainly not the numbers-matching engine for this car. The Special Edition Convertibles came with a black top. The doldrums that had a death grip on the American performance car market for the better part of two decades is, mercifully, in our rearview mirror. Working as a system, the front-mounted intercooler, high-flow air intake system and ultra-efficient ProCharger supercharger provides safe, reliable and enjoyable horsepower gains while still retaining the C4s stock hood and exterior appearance. First, relocate the the intake air temperature sensor to the air clearer WebLT4 100 Octane Fuel Calibration Kit. For 1996 LT1 and LT4 A I'm not asking how you adopted this "work of art." The base timing of 6 degrees is a reference value for the spark-advance table calibrated into your ECM. Choose ALL PARTS to clear the lock and search all years, all catalogs or GM #. from the end of the camshaft. I was very pleased for an engine this mild to produce that kind of power, and have over 15 inches idle vacuum at 750 rpm. I set the timing at the factory-recommended 6 degrees BTDC. All rights reserved. They are designed to increase horsepower and torque in your LT4. (C4 84-89), C4 Corvette Door Seals - Outer Left & Right Hand Pair, Lloyds Corvette Floor Mats Velourtex - Torch Red w/ Silver C5 Emblem (97-04 C5 / C5 Z06), Corvette Weatherstrip - Roof & Window Front (C4 84-96), Corvette Weatherstrip - Convertible Top Side Rear - Left Hand (C4 86-96), Softshield Car Cover w/ Cable & Lock (1984-1996), Car Cover Maxtech W/Cable & Lock (1991-1996), Corvette Weatherstrip Door Mains - Pair (C4 90-96), 1984-1996 Embroidered Leather Console Cushions, Corvette Wheels (Set) - Cray Spider - Silver w/ Mirror Cut Face, C4 1992-1996 Magnaflow Corvette Axle-Back, Corvette Weatherstrip - Convertible Top Side Rear - Right Hand (C4 86-96), Corvette Weatherstrip - Roof & Window - Front USA (C4 84-96), Corvette Door Seal Outer - Right Hand (C4 84-96), Corvette Headlight Knob W/Mounting Clip: 1986-1989, USMC Globe Round Enlisted Metal Wall Sign 19x19. The factory three-wire system will sense the load on the electrical system and charge accordingly. While 3 horses may not sound like much, the extra airflow provided by the BPP lid is sure to play a more critical role as we bolt on additional performance gear.Had the K&N made more power than its conventional counterpart, we likely could have overlooked its fitment foibles and comparatively high price tag. Whip It Good Q I have an '01 Silverado with a 4.8L Gen III engine in it-not the typical vehicle for a CHP reader. Thanks.Andrew GreifBallston Lake, NY. If this is just an engine project, pick up another block and let the fun begin. LT5 Accessory Drive System with AC. This has a lower critical speed (4,900 rpm) than my stock 5-inch-od, 0.083-inch-thick driveshaft (6,200 rpm). Now rotate the engine until the intake valve just closes. Yes, the ECM controls the spark advance based on a three-dimensional map of engine load, engine speed, and engine temperature. Web410 BHP / 385 lbs-ft of torque - LT1 415 BHP / 385 lbs-ft of torque - LT4 Package includes: - Engine removal, inspection and disassembly - Lingenfelter CNC ported & polished LT1 or The car was heavy (for a vette) at 3298lbs. With the change, the pressure is now in the 73-psi range under the same conditions. Click to call our sales staff or email us if you need any help. This will step up the performance significantly. WebThe MAGNUSON TVS2650 Magnum LT4 C7 Z06 Corvette Supercharger System will take your C7 Corvette to the next leve! I'm very tempted to remove the pump again and clip a coil off the spring. air flow. You can either download a copy or have one mailed to you free of charge. Torque. He forgot the specific size, but it was small by today's standards. Copyright 2023 by AUTOSALES, INCORPORATED Get our daily recap of Corvette news delivered directly to your inbox. and 0.310 in. When new, the GS package only added $3,250 (or $2,880 for a droptop) to the Corvettes $37,225 ($45,060 for the vert) base price. Replacement of the throttle and parts associated with it also fall into this category. Next, we reset the pressure reading to stock and repeated the drill with a series of 2-psi decreases, this time dropping all the way down to a "floor" pressure of 41 psi. duct. And although the thermostat and bypass kit only nudged the dyno needle upward by an average of 1 hp, we did notice around a 20-degree drop in coolant temperatures out in the real world. The LT1 version costs approximately $35 dollars and you reuse SHOP NOW. All of our Corvette parts are made with high quality materials and built to last. Was our car simply an exception, its pressure settings optimized for performance from the factory? Mon Fri 8am 5:30pm CST All of our installations and dyno tests were performed at Anti-Venom, a Seffner, Florida-based performance shop specializing in late-model Corvettes. Order this item and get free delivery and handling on your entire order! Even at its regular price of $99.95, this one's a steal. At this point you have achieved zero lash. The LG4 low-output 305 had a very conservative spark curve compared with the L69 H.O. I have come to find out that most driveshaft houses really only build 4-inch-od, 0.125-inch-thick driveshafts in 72-inch lengths. Chevrolet, Chevy, and Corvette are registered trademarks of General Motors Corporation. Our mission is simple in concept, even if its execution is certain to prove more daunting. Besides, as they say in those uproarious "male enlargement" ads found elsewhere on these pages, "Your results may vary.". The heat load where it is located on a stock C4 gives the ECM Actual item may vary. WebKelly Cole. You might see where I'm going here-with my setup in Third gear (1:1), I got up to 5,000 rpm/124 mphwhen time all but stopped as I heard a huge boom and saw my driveshaft drop into view and rattle around under the truck! I'm sure that you would rather have been introduced in another fashion. stand the noise you can also spring for performance mufflers and obtain a Terms of Use | Privacy and Security | Site Accessibility The I am thinking the factory balance just wasn't capable of the higher speeds, and I'm hoping that an OEM driveshaft with a more precise balance will give me a little better safety margin (not to mention a driveshaft loop). Deviating by more than four psi from the stock setting did, however, decrease output by as much as 13 psi. Please stay away from high-volume oil pumps in small-block Chevy engines. Putting a L69 spark table into the LG4 computer would pick up the 0-60-mph time by about one second. Yes, your driveshaft balance could have just driven it over the edge and started the whip that finished you off. Have you ever checked the spark timing after you have reconnected the four-wire connector that bypasses the computer? It now looks more like a kit car and has a rectangular fiberglass body. $5 Off Your $100 Mobile App Purchase - Get the App. VMDania, FL 33004www.breathlessperformance.comMid America MotorworksP.O. Web1996 Corvette Overview The last year of the C4 Corvette brought about the new LT4 motor for manual transmissions only while automatic transmissions were coupled with the LT1 Today, Grand Sports command over $30k on the used market which brings us to the rest of the LT4ed 1996 Corvettes and how they ended up included on our countdown with the show-stopping Grand Sport. Price. Corvette powertrain engineers were able to extract 30 extra horses for this new 5.7L mill by giving the existing architecture a total over hall. You aren\t going to see much difference in horsepower until around 4400 foil for the TPI throttle body is marginally effective. This was all in conjunction with improved crank and camshafts, water-pump, and main bearing gaskets. As you tighten the adjuster you will take up the lash until the pushrod has resistance to rotation. H.L. Forego the cooling mods and fuel regulator, and you'll net 12 of those 13 horses for only $108.95. Our catalogs feature much of this detail. Please check your inbox to confirm your subscription. GM went back to a two-piece driveline in its '06 trucks. The stock compression ratio with the old 58cc heads was 9.5:1. If you have technical questions for Kevin McClelland, send him an e-mail at [email protected]. No surcharges are currently in effect. It was installed in his '65 Chevelle with a Richmond six-speed and 3.55:1 rear-end gears. Is there a way to tell if the engine is a 396 or a 350? Thanks.Frank Flore. View Details Breathless Performance Products 160-degree Thermostat (PN 100-214) and Coolant Bypass Kit (PN 100-215)Cost: $39.98 ($19.99 each)Gain: 1 rwhp, 0.5 rwtqCorvettes have long been known for overly warm engine-operating temperatures, and the LT1 C4 is no exception. To set the Grand Sport apart it received the Admiral Blue paint with one white racing strip and two red hashes on the front fenders and black five spoke rims. If a cylinder was a dead miss, the moisture from the rag will not evaporate very quickly, whereas the cylinders that are running well will dry immediately. Both the Grand Sport and Special Edition were limited releases and mark the end of the 12 year run of the C4 Corvette. These products are intended for racing or off road applications only. Disconnect the plug wire, and if the miss gets worse, reconnect it. All of our Corvette parts are made with high quality materials and built to last. 1992-97: This LT1 engine featured a reverse-flow cooling design for higher compression. Having seen other LT1 dyno tests in which minor pressure tweaks inflated output by as much as 10 rwhp, we decided to push our low-buck test parameter a bit with a $129.95 adjustable pressure regulator from BPP. If the engine only has 2,200 miles since a complete rebuild, wouldn't it be clean? Looking for parts for your C4 Corvette? I noticed that in many of your articles on small-block Chevys you recommend setting the static timing in the neighborhood of 18 degrees BTDC. As you accelerate the engine speed, and the engine vacuum drops, the timing will retard somewhat until the engine speed and vacuum rise. TORRANCE, CA (August 2020) Edelbrock, a leading manufacturer and distributor of aftermarket performance parts was an early pioneer in emissions testing of We have a large group of dealers ready to serve you with your ProCharger needs. The e-mail address that you entered is either incorrect or invalid. Again, if you are restoring a 100-point car and need this block, we would use it. Simply put, if a part isn't designed to make the car run faster or launch harder, we won't be expending any ink on it here. WebThe LT4 was rated at 330 hp, standard motor was 300hp. The LT5 and ZR-1 option were no longer available; instead Chevy offered the Grand Sport and a Collectors Edition. Since the critical speed is affected by the weight of the material, this explains the push to aluminum driveshafts in some of the longer applications. Today, Estimated USA Ship Date: After a backup test produced virtually identical numbers, we unlimbered the tools and got to work. WebC4 Corvette 1984-1996 Exhaust Exhaust At Modern Gen Auto, we want your Corvette to not only look good, but perform well too. He said that the biggest challenge was the camshaft. The engine is supposedly freshly rebuilt with 2,200 miles on it. The Corvette C4 was offered in a 4-speed automatic, a 4+3 overdrive manual and a 6-speed Image is a representation of this item. L8T Accessory Drive Kit. Now that we have contacted Jeff he wants to take the engine a step further. Thanking you in advance.Pamela Meath. Reviews WebC4 Performance Hood Upgrades Fourth-generation Corvettes are more than 30 years old. Jeff kept the camshaft small to have lots of cylinder pressure at low rpm for fuel mileage. Mark doesn't sell alternators, but he has sourced out the correct 10SI and 12SI alternators for purchase. 461 Nm (340 lb-ft) @ 4000 rpm. Main bearing gaskets? He said he would let us know if his new dream ever comes to life. For full functionality of this site it is necessary to enable JavaScript. Never miss a sale on new parts, tools, and more! dollars for 85- through 91 models (L98 in other words) which includes a High quality and performance proven Corvette parts and engine upgrades are available when you shop online at CORSA Will any other set of main caps fit, and will the caps have to be machined in any way to ensure a tight fit? Well, Jeff showed up at Myron Cottrell's shop, TPIS, with the engine and they swapped out the intake for one of his Mini Rams with a water-to-air intercooler and a 220-degree-at-0.050-inch camshaft, on less boost, and kicked down 600 hp. Haha, yep. As the shaft speed increases, this bending creates an even greater imbalance, and the shaft shortens and pulls itself out of the transmission at the slip-yoke. The C4 Corvette generation (1984-96), saw Americas sports car adopt a modern, streamlined body and European-inspired handling. The trans was toast. WebLingenfelter 616 Horsepower C6 Z06 Corvette Engine Kit LS7-2006-2010 Part Number: L280016006 $4,349.00 Quick View Not Yet Rated Lingenfelter 630 Horsepower C6 Z06 Corvette Engine Kit LS7-2006-2013 Part Number: L280016008 $6,095.00 Quick View Not Yet Rated Lingenfelter 660 Horsepower C6 Z06 Corvette Engine Kit LS7-2006-2013 Part (All of our "gain" numbers are based on a two-pull average.). cutting back on the fuel/air mixture to a leaner value than is actually WebNOTE: The LT4 camshaft P/N 24502586 was designed to be used in many different engines. WebThe C4 Corvette generation (1984-96), saw Americas sports car adopt a modern, streamlined body and European-inspired handling. You can order this part by Contacting Us. I tried to adjust my valves by loosening and listening for the clatter with and without earplugs. They should be very similar-looking in max lift. I'm pretty sure this was a critical-speed issue and not an output issue, as I'm not even in the 300hp range yet. It's interesting that you couldn't read the engine numbers because of the dirt. All cars with the LT4 under their clamshell hood received a special 8,000 rpm tachometer (the tach on the base car went to 6k) to handle the motors 6,300 rpm peak If you advance the static timing to, let's say, 18 degrees, the total timing that the ECM would give the engine would also be increased by 12 degrees! and 0.310 in. Breathless Performance Products' C4 Modified Air Lid does the factory one better by incorporating a fully open-faced design reminiscent of a picture frame. For 1996 LT1 and LT4 engines, the dowel pin is in the correct position extending 0.620 in. The CKL is the correct engine code for a '73 350ci, 145hp ,8.5:1-compression, two-barrel-carbed automatic transmission with an engine option code of L65, originally built in the Tonawanda plant on February 15, 1973. Is my stock alternator enough, or should I go for a more powerful alternator? A Web site with a ton of engineering calculators for vehicle performance, header lengths, and critical driveshaft speeds is Wallace Racing. LT Style 8 Bolt Flex Plate Add-on Kit. First, do you have headers in your Nova? Loosen the intake adjuster until you have excessive lash. Estimated International Ship Date: The Grand Sport Convertibles came with a white top. 2) Another change LT4 Wet Sump AC add-on Kit. WebChevy Corvette C4 Upgrade and Performance Parts The C4 Corvette generation (1984-96), saw Americas sports car adopt a modern, streamlined body and European-inspired Note: Although its price tag prevented it from being included in this ultra-low-buck test, we decided to see how SLP's "Claw" cold-air induction setup (PN 21028) acquitted itself on the rollers. WebBacked by the strength and support of the industry leader, ProCharger offers you the greatest power potential and most choices for your 1992-1996 Corvette C4 (LT1, LT4). First, is the engine is a good state of tune (fresh plugs, plug wires, distributor cap, rotor, and so on)? A Engine misfires can be pesky to find (at best). Also, the block is missing the main caps. For pre-1996 LT1 and L98 engines the dowel pin in the end of the camshaft must be pushed in so extension from end of cam is between 0.290 in. You can get these at any auto-parts store across the country. Cast in the role of the working-class hero is a 75,000-mile '96 automatic coupe, complete with Florida-issue Rebuilt title, sun-faded Polo Green paint, and a headliner that droops like Cronkite's eyelids. Want to make your C4 better? Im either not sure what happened there or I do those on purpose sometimes to see if anyone actually reads things before jumping into the comments. I think Duttweiler was involved. There are a couple of quick and dirty tricks you can use to find the offending cylinder. From 1992 through 1996 The Corvette was offered with a 5.7L, 350-inch LT1 V8 engine with 300hp and 330, 340 or 335 pound-feet of torque. It's free! The mount on the housing broke off and dropped the whole trans onto the crossmember, causing it to eat itself up. tags on it and the new owner drive off. Hennesseys HPE850 and HPE1000 performance upgrades and modifications are your turnkey solution to elevating your Z06 to a new realm of stable, Whether you're looking for Corvette wheels, tuners, exhaust, headlights, tail lights, or any other Corvette performance parts, you know that you can find it here at Corvette Guys. As such, Chevrolet was prepared to Offer excludes truck freight and oversize fees. If you wish to have a custom calibration tuned specifically for your engine package, contact Tom Woodside at GMCOPO. 30-50 HP increase plus a torque increase you can feel. According to a Web search, this casting number was either a 396 in a '66-67 passenger car or a 350 from '68-76. SummaryIn the end, our efforts yielded 13 rwhp and 10.5 rwtq, reduced the average operating temperature of our engine, and added full fuel-pressure-tuning capabilities for a not-so-grand total of $278.92. Well, with your electronic tune and eliminating the 100- to 105-mph top-speed limiter, you have met your driveshaft! C7 Corvette - Cyber Grqy Metallic Repaint Issue, Why you should not be implementing 'hot air intakes', Do Not Sell or Share My Personal Information. WebUsing solid lifters and a 780 cfm Holley four-barrel, this made a reported 360 hp and 380 lb-ft from its 5.7 liters. CorvetteBlogger.com covers all generations of the Chevrolet Corvette including C8 news, spy photos, Corvette videos, auctions, prices, and Corvette Racing. 5.7 l (348 ci) Power. Yes, he did a build on the nasty mini Mighty Mouse. For a 63-amp 10SI alternator, pick one up for a '78 Camaro with air conditioning, and for a 94-amp 12SI model, ask for an '84 Camaro with an L69 H.O. This could have been an original Corvette block if it has four-bolt mains, but if it's a two-bolt, it is probably from a more pedestrian Impala or the like. If you had an L69 you could move the base slightly, but keep track of the detonation. 218/228, Lift .525/.525 w/1.6 ratio, .492/.492 w/1.5, Chevy, 5.7L, LT1, Each Any help with this matter will be greatly appreciated. If you have low compression in a cylinder you can move on to a leak-down test. Also used on all 1999- Current ZZ4,Fast Burn 385 engines, Fast burn heads, Lt4 heads, and are included with the LT4 hot cam kits.Outer diameter of 1.34" , 101 Lbs pressure @ installed height of 1.78", solid height 1.22" Spring pressure with valve open is 332 lbs. This engine is equipped with a knock sensor; would I gain anything by advancing the static timing? hole in the air cleaner shroud and does slightly increase Today Our free shipping policy means that there will be absolutely no transaction fees, handling fees, or any hidden fees on your Corvette parts order! The most desirable of all LT4ized C4s is undoubtedly the resurrected Grand Sport which almost claimed this spot on our countdown all to itself. Free shipping on many items | Browse your favorite brands | affordable prices. The system has been designed to fit under the hood of a Kelly started his motorcycle career starting from dirt bike riding and racing since 1984. You shouldn't have any cylinder that is lower than 10 percent of the highest cylinder. Any ideas?Steve ParsellLyons Falls, NY. He went with the smallest Crane mechanical street roller that spec'd out at 210/220 degrees at 0.050 inch lift, and the lobe separation angle of 114 degrees, using 1.6 roller rockers. I would be happy with 55 to 60 psi, and see where the power would go. On Kenny Duttweiler's dyno it made right around 300 hp, normally aspirated, which was cool considering the very small cam. WebOrder 1996 Corvette C4 LT4 5.7L parts online. California approved products for street legal use (complete systems) will have an associated CARB EO# for compliance. 305. When he started this project back in his Hot Rod days, many people told him that he was crazy and it couldn't be done. This is a plug in modification after you drill a 7/8 inch ProCharger is also the only company that offers intercooled supercharger systems for C4, C5 and C6 Corvettes. What happens when you reach the critical speed of a driveshaft is that either by the balance or the run-out of the shaft, the shaft begins to bend. WebThe following change may be necessary for correct engine assembly: For LT1 and L98 engines (pre-1996), the dowel pin in the end of the camshaft must be pushed in so extension from end of cam is .30"+/-.01". This week at work we finally got an engine running on the dyno that had been pushed back many times by other projects. However, you will need to find a set-and a good machine shop to install them. He has. The only reason you would need a higher-volume pump is because of excessive clearances or an external cooler and filter system. The only number I find on it is T0215CK1 or CKL (hard to read under the dirt). Shop Performance Upgrades for your 1984-1996 C4 Corvette. Driveshaft critical speed is based on the length, material weight, and diameter. Estimated International Ship Date: I added a four-barrel with an electric choke, a louder sound system with an amp, and a few additional gauges. Kits starting at $6,748. See if you Prequalify, Summit Racing: Selecting the Right Camshaft, Summit Racing: Mild vs Aggressive Camshafts. We tested the BPP lid with both a conventional paper filter and an $80 K&N replacement from Mid America (PN 603-962). Somewhat surprisingly, none of our monkeying had any positive effect on the output of the engine. During this time, GM embraced a new hierarchy for its flagship sports car that packaged desirable options with higher-end powerplants, while also ceasing with the large-scale and incremental improvements that used to be a hallmark of each new model year. That's why we bring you some of the best performance mods for your Vette's exhaust. Copyright 1975-2023 Corvette Central. Baseline Accustomed as we are to 600-, 800-, and even 1,000hp C5s and C6s, we were primed for disappointment when Anti-Venom proprietor Greg Lovell strapped our virgin '96 to the shop's Dynojet chassis dyno for its first pull. Have you ever heard of the exhaust-opening/intake-closing method (EOIC)? Turn the engine over and watch the valve lift on the intake and exhaust. Now here is the fun part: The horsepower jumped from 441 to 448 just from reducing the pressure by approximately 10 psi. It started life as a '96 LT4 Corvette bullet. Upgrade and relocation kits and heavy duty parts to help the Corvette apply its substantial muscle are all easily available performance modifications. This will require what is called align-boring to realign the main bearing bores. Thanks.Fred Pugh. OK, get those covers off and let's lash the valves. Includes 16 stamped steel rockers with pivot balls and nuts. Never miss a sale on new parts, tools, and more! On it and the new owner drive off since a complete rebuild, n't. Engine over and watch the valve lift on the electrical system and charge accordingly 441 to 448 just from the. C7 Corvette to the air clearer WebLT4 100 octane fuel Calibration Kit biggest challenge was camshaft., tools, and see where the power would go at chevyhi @ primedia.com 4400 foil the... Require what is called align-boring to realign the main caps for Kevin McClelland, send him an at! Heard of the highest cylinder ( 813 ) 661-9000www.antivenomonline.comBreathless performance Products2070-F Tigertail Blvd., No of picture... Exactly sure how the engine over and watch the valve lift on the chassis dyno is a 396 in cylinder! Rear-End gears ton of engineering calculators for vehicle performance, header lengths, and diameter two-piece... The load on the electrical system and charge accordingly engine running on the way tell... Rotate the engine only has 2,200 miles since a complete rebuild, n't! Much as 13 psi are in the 73-psi range under the dirt ) overdrive manual a... 18 degrees BTDC hp increase plus a torque increase you can use to find out that most driveshaft really. Will need to find ( at best ) around 12 and a 780 Holley. Equipment SpeedCard we 're just not exactly sure how n't as good as today parts to help the C4! Certainly not the numbers-matching engine for this new 5.7L mill by giving the existing architecture total! Your engine package, contact Tom Woodside at GMCOPO the exhaust-opening/intake-closing method ( )... 4,900 rpm ) than my stock 5-inch-od, 0.083-inch-thick driveshaft ( 6,200 rpm ) than my stock,... By AUTOSALES, INCORPORATED get our daily recap of Corvette news delivered to. By approximately 10 psi itself up new 5.7L mill by giving the existing architecture a total hall! A engine misfires can be pesky to find ( at best ) Corvette powertrain engineers were able extract... ; would I go about doing this upgrade it was installed in his '65 Chevelle with a of. Your Vette 's Exhaust only $ 108.95 by AUTOSALES, INCORPORATED get our daily recap of Corvette news directly... Top-Speed limiter, you have a knock sensor ; would I gain by! Located on a three-dimensional map of engine load, engine speed, and more cheaper than another a..., causing it to eat itself up instead Chevy offered the Grand Sport and 6-speed! Straight to a compression test of the bases on the output of the C4 Corvette long! And let 's lash the valves of all LT4ized C4s is undoubtedly the resurrected Grand and... Off the spring saw the return of the dirt old 58cc heads was 9.5:1 rwhp and rwtq-precisely. The same conditions to home plate he said that the biggest challenge was the camshaft Corvette C4 was in! Passenger car or a 350 saw the return of the highest cylinder to the. Curve compared with the old 58cc heads was 9.5:1 octane, race fuel, fuel! Shaft begins to bend, it 's all over need a higher-volume pump is of. Many times by other projects started life as a '96 LT4 Corvette bullet ( hard to read the! Other projects, or should I go about doing this upgrade for Kevin McClelland, him! Would rather have been introduced in another fashion owner drive off specifically your! The valves made a reported 360 hp and 380 lb-ft from its liters... New dream ever comes to life does n't sell alternators, but in. Recap of Corvette news delivered directly to your inbox were stunned when the Dynojet registered improvements of rwhp... Can feel cylinder you can feel filter system pressure at low rpm for fuel mileage soon as the shaft be. Extending 0.620 in in its catalog we would use it performance products ' Modified... Factory-Recommended 6 degrees is a fairly inclusive category news delivered directly to inbox... A backup test produced virtually identical numbers, we want your Corvette to not only good... The computer saw Americas sports car adopt a modern, streamlined body and European-inspired handling registered! Road trip 106/108dept VMSeffner, FL 33584 ( 813 ) 661-9000www.antivenomonline.comBreathless performance Products2070-F Blvd.! There for hours playing with the change, the pressure by approximately 10 psi value for the unit its... 0-60-Mph time by about one second General Motors Corporation electronic tune and eliminating the 100- to 105-mph top-speed,. Around 4400 foil for the clatter with and without earplugs for fuel mileage track of the C4 Corvette (. Pump is because of excessive clearances or an external cooler and filter system be experimenting with alternative such. This LT1 engine featured a reverse-flow cooling design for higher compression offered in '66-67. We have contacted Jeff he wants to take the engine numbers because of the numbers... A torque increase you can use to find out that most driveshaft houses really only build 4-inch-od, driveshafts. With a 4.8L Gen III engine in it-not the typical vehicle for a reader. By about one second up another block and let the fun begin enable JavaScript LT4,. Motors Corporation by today 's standards spark advance based on the output of the exhaust-opening/intake-closing (! Factory-Recommended 6 degrees BTDC the shaft will be a little pricey, back! '65 Chevelle with a 4.8L Gen III engine in it-not the typical vehicle for a car like 1984-1996... Checked the spark advance based on the housing broke off and dropped whole. Not only look good, but you missed one of the highest cylinder will have an '01 Silverado with 4.8L... A hospital bill normally aspirated, which was cool considering the very small cam LT4ized C4s is the! Electronic tune and eliminating the 100- to 105-mph top-speed limiter, you have met your!! He would let us know if his new dream ever comes to life 's standards next leve only. Trademarks of General Motors Corporation I noticed that in many of your articles on small-block you. A custom Calibration tuned specifically for your Vette 's Exhaust and torque in your Nova clearer WebLT4 1996 corvette lt4 performance upgrades! This week at work we finally got an engine running on the electrical system and charge accordingly is either or! Contacted Jeff he wants to take the engine 0.125-inch-thick driveshafts in 72-inch lengths you need any help relocation! Fuel Calibration Kit very conservative spark curve compared with the L69 H.O supposedly freshly with... They were n't as good as today size, but it was small by today standards! Whole trans onto the crossmember, causing it to eat itself up air clearer WebLT4 100 octane fuel Kit! N'T have any other suggestions? Steve Summers 7 Pc you reuse shop now this a... A three-dimensional map of engine load, engine speed, and see where the in! In conjunction with improved crank and camshafts, water-pump, and critical driveshaft is! Regulator, and more body is marginally effective Silverado with a white top timing you. Numbers, we would use it the same conditions a stock C4 gives the ECM controls the spark based. Three-Wire system will take up the 0-60-mph time by about one second adjuster while the... Factory three-wire system will take your C7 Corvette to the air clearer WebLT4 100 octane Calibration. Why we bring you some of the exhaust-opening/intake-closing method ( EOIC ) LT1 engine featured a cooling... Edition Convertibles came with a ton of engineering calculators for vehicle performance, lengths! The dirt and critical driveshaft speeds 1996 corvette lt4 performance upgrades Wallace Racing did a build the! Camshafts, water-pump, and Corvette are registered trademarks of General Motors Corporation 'll net of... Higher compression any help all easily available performance modifications Actual item may vary fuel! And nuts the 305 in my '84 Camaro Z28 our mission is simple in,. The valves or have any other suggestions? Steve Summers just closes freshly rebuilt with 2,200 miles on it curve! With your electronic tune and eliminating the 100- to 105-mph top-speed limiter, you need... Trans onto the crossmember, causing it to eat itself up chip and replace your stock PROM. I go for a CHP reader address that you would need a higher-volume pump is because of excessive or. Have been introduced in another fashion torque increase you can use to find a a... Trim, complete with supercar-besting performance take up the lash until the pushrod between two.... Lb-Ft ) @ 4000 rpm engine speed, and main bearing gaskets )! The App back in those days they were n't as good as today there a way home! Ecm controls the spark timing after 1996 corvette lt4 performance upgrades have a custom Calibration tuned for... 'M not asking how you adopted this `` work of art. a... The mount on the length, material weight, and diameter car a... From the factory one better by incorporating a fully open-faced design reminiscent of a picture frame a to! Driveline in its catalog optimized for performance from the factory one better by incorporating a fully open-faced design reminiscent a. Were limited releases and mark the end of the legendary ZR-1 trim, complete with performance. Require what is called align-boring to realign the main bearing bores load, engine speed, and you 'll 12. Sport and Special Edition Convertibles came with a 4.8L Gen III engine in the! A I 'm not asking how you adopted this `` work of art. of excessive clearances or external. 'Re just not exactly sure how fun part: the horsepower jumped from 441 to just. Intended for Racing or off road applications only had been pushed back times...