As good as the $500 454 is, the stock L29 truck motor (circa 1999) was originally rated at 290 hp and 410 lb-ft of torque. ... The high-lift cam and attending increase in engine speed necessitated a valve-spring upgrade. The well-worn stock springs were replaced by a set of 26120 beehive springs (and attending hardware) from COMP Cams ...The bill: $3,699.96 for all but the carb. The results: 567 horsepower and 537 pound-feet of torque on 89-octane pump gas! That represents a 70-percent increase in horsepower. Hot Rod And remember ... townhomes for rent maumee Those are the L29 heads and I have seen some dyno test with 600lbs. of tq. pretty stout if you ask me. I have a set and I am not parting with them. One of GM's best kept secrets. The heads don't have huge flow numbers at the top lift numbers but from 100 to 400 these things flow good numbers just like the sb vortec heads. craftsmen mower My steps to success for Hass.io on Intel NUC ; Absolute Beginners guide to installing HA on Intel NUC using Docker; Let’s start. Download Ubuntu Desktop image. Download Rufus. Write the Ubuntu image to USB-drive with Rufus. Put the USB-drive into the Intel NUC and boot from it. You maybe need to turn off secure boot.L29 454 Cam upgrade - Towing | GMT400 - The Ultimate 88-98 GM Truck Forum Forums Street and Track Engine Performance + Maintenance 96+ Vortec Performance + Computer Swaps L29 454 Cam upgrade - Towing cool_as_crap Nov 15, 2016 Nov 15, 2016 #1 cool_as_crap I'm Awesome Joined Jul 18, 2014 Messages 433 Reaction score 163 Location El Dorado County robert jeffress height Now, the L-29 engine. It's heads are true small intake port large ovals at right around 230 cc's or so! This said, the chambers are 100 cc's and a modern, "heart-shape". Get one's CR again up into the 9's and go. Now see if you want to run a carb. or an EFI? Add small tube, (1.75" dia.), headers and such too.The Vortec 7400 was based on Chevrolet’s 1995 7.4-liter 454-cubic inch V8 big block, which produced 230 horsepower. For GM vehicles, the Vortec variant increased power by 60 horses. The engine displacement in liters is 7400, which is readily changed to 7.4 liters. This engine …7.4 Vortec Performance Upgrades Chevrolet 7.4 Vortec was a modern-day improvement of the firm's most legendary big block. It was known as the Vortec 7.4 (7400, Regular Production Option designation L29) in North America and across other markets. craigslist maryland farm and gardenNow, the L-29 engine. It's heads are true small intake port large ovals at right around 230 cc's or so! This said, the chambers are 100 cc's and a modern, "heart-shape". Get one's CR again up into the 9's and go. Now see if you want to run a carb. or an EFI? Add small tube, (1.75" dia.), headers and such too.BANNED. Jul 26, 2001. 10,496. Columbia, MO, USA. They have about 230 cc smallish, real large oval ports, 100 cc fastburn, heart shaped chambers vs about 200 cc intake port peanut port heads w/ generally great big 118+ cc open chambers. Right, they replaced the PP heads and increased power a bunch back then.Aug 30, 2010 · Hotrodding Basics 454 L29 Power Upgrade Jump to Latest Follow 1 - 3 of 3 Posts 4 454headache Registered Joined Apr 30, 2009 260 Posts Discussion Starter · #1 · Aug 30, 2010 So I have a mild Gen 6 roller 454, 9:1 CR, .483 lift 224 duration, L29 heads, and headers. I'm guessing it makes anywhere from 380 to 425 hp. paulding k12 The first step is to test for a fire signal at the injector, and the easiest way to do that is with a set of noid lights, but that meant removing the upper intake manifold. Our noid light test...454SS (91-93) and 94-95 3/4 and 1 ton trucks used 90 lb/hr injectors at 28-32 psi (high pressure system) Vortec L29 454 290 hp 410 lb/ft torque The Vortec 454 uses 8 24 lb/hr fuel injectors that are sequentially fired. Both engines can benefit a LOT from higher flow cylinder heads and cams.Other parts used in the build to finish off the engine were a set of GM Performance Parts black “crinkle” baffled valve covers with matching Bow-Tie logo breathers, Fel-Pro CorkLam steel-core valve cover gaskets, and a …Item is in used condition. > Size: W34 L29 > Waist Size: 34" > Inside Leg: 29" > Rise: 11" > Hem: 8". Skip to main content. Shop by category. Shop by category. Enter your search keyword ... 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A Series balance of nature commercial actress Chevrolet Performance Big Block Chevy L29 Vortec Cast Iron Cylinder Head. Free Shipping over $199* Same Day Shipping before 4pm* Price Match Guarantee; ... Performance Parts (1) Part Fitment Semi Universal (1) PRICE $750 TO $1000 (1) Items Per Page: L29 Vortec Cylinder Head.Engine L29 Chevrolet Performance 7.4L $6,111.41 $5,995.28 (You save $116.13) SKU: 19207552 Weight: 590.00 LBS Shipping: Calculated at checkout Quantity: Product Description Big Block Engine for 1980-2000 Chevy/GMC Trucks and Vans For 1980-2000 Chevy/GMC trucks, SUVs and vans with a VIN build code of L19, L29 or LE8. Features: Dec 9, 2019 · The first step is to test for a fire signal at the injector, and the easiest way to do that is with a set of noid lights, but that meant removing the upper intake manifold. Our noid light test... honda xr 250 for sale craigslist Chevrolet Performance 454ci/7.4L Long Block Replacement Engine '74-'93 GM Pickup/Van. 454ci/7.4L Long Block Replacement Engine. 1974-93 GM Pickup/Van with VIN code L19, LE8. …Mercruiser 7.4L Magnum MPI (L29) Models This particular engine model ran between 1997 & 2001 and was also used for both Sterndrive and Inboard Engine applications. There was also an automotive version of this engine used in Truck applications being known there as the Vortec 7400. These engine were rated at 310 Hp and made around 400 Ft-Lbs torque.Shopping Made Fun L29 Spark Plug for MERCRUISER Chevrolet Big Block 7.4L MPI 7.4L MPI MIE Buy on the official website Fashion flagship store kleeberger-brombachsee.de, C $10.58 4L MPI 7 Yard Outdoor Power Equipment 4L MPI MIE (L29) in Home & Garden Spark Plug for MERCRUISER Chevrolet Big Block 7 Chainsaw Parts Garden & Outdoor Living, save up ... microsoft graph api sharepoint Mar 4, 2019 · Your important power will also come from a good intake manifold and carb for your L29 engine. A nice Professional Products 53026 air gap dual plane intake and a Holley BR67214 Holley Carb should do everything you need. Don't over cam or over intake and carb those L29 stock heads and stock compression! carpediem Registered Joined Oct 30, 2016 James' Budget L29 Gen VI 454 running on the engine stand! - YouTube James' Budget L29 Gen VI 454 running on the engine stand! Dick Hamm 5.17K subscribers 27K views 2 years ago In this video... louisiana election results by parish 2022 Stage 1 Upgrade for Mercury 525 EFI. Performance computer re-calibration and a Custom High flow Billet Flame Arrestor that increases the maximum power by more than 25 HP* and 30 pounds of torque*. This upgrade will not only improve overall top end power but it also increases the low end power for a decrease in on to plane time and a gain in acceleration you can feel. The …There is something wrong with your speeds/engine RPM with your props. If you are only turning 4200 RPM with the 22P, the last thing you want to do is go to more pitch. You should work on getting that engine up to a minimum 4600 RPM with the 22P. fatal car accident allegan county Entdecke Huawei Mate 20 Pro 128GB LYA-L29 128GB Schwarz Android Smartphone Dual-SIM in großer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung für viele Artikel!rpol98. i decided to go with the Comp Cams roller-tip 1411 rocker arms. i had to get the ARP 135-7102 conversion studs since the L29 7.4L cylinder heads are threaded for 3/8-16 rocker studs (why oh why!), and the CC 1411 rocker balls are 7/16 (std big block). problem i ran into is that the factory L29 pushrods are 5/16" (SBC dia), whereas the ...Apr 9, 2008 · BANNED. Jul 26, 2001. 10,496. Columbia, MO, USA. They have about 230 cc smallish, real large oval ports, 100 cc fastburn, heart shaped chambers vs about 200 cc intake port peanut port heads w/ generally great big 118+ cc open chambers. Right, they replaced the PP heads and increased power a bunch back then. kubota package deals virginia rpol98. i decided to go with the Comp Cams roller-tip 1411 rocker arms. i had to get the ARP 135-7102 conversion studs since the L29 7.4L cylinder heads are threaded for 3/8-16 rocker studs (why oh why!), and the CC 1411 rocker balls are 7/16 (std big block). problem i ran into is that the factory L29 pushrods are 5/16" (SBC dia), whereas the ...As part of General Motors, Chevrolet Performance is able to offer a wide and diverse ... GM 5.7L 350 L05 Gen 1 87-95 Truck Crate Engine 210HP - ETA LATE FEB.٠٢‏/١٠‏/٢٠٢٢ ... The L29 was similar to other Chevy big block V8s available, but it had a much bigger focus on low end torque for better towing. This is easily ... 2008 lexus is250 check system light reset BANNED. Jul 26, 2001. 10,496. Columbia, MO, USA. They have about 230 cc smallish, real large oval ports, 100 cc fastburn, heart shaped chambers vs about 200 cc intake port peanut port heads w/ generally great big 118+ cc open chambers. Right, they replaced the PP heads and increased power a bunch back then.We Help You Get the Performance Out of Your GM That You Deserve ... Vehicle Build/Engine Swap Questions by Email Only, Please. Hayden, ID.Email if you do not know your exact part number. Quality SINOTRUK HOWO Engine Parts AZ1092020002 Flywheel For High Quality And Low Price - find quality New Products, Truck Engine & New Products from Jinan Century Tianbang Automobile Import & Export Co., Ltd. of China Suppliers - 144162710. The CART engine analogy was more of an extreme example.Chevy 10141280: L29 Vortec Cast Iron Cylinder Head - JEGS High Performance. 1-800-345-4545. virginia 3rd grade math sol practice worksheets Nikon Coolpix cameras are organized into five different lines. The line in which a particular camera is placed is indicated by the letter which is the first character of its model number. The lines are: the (A) series, the (AW) all weather series, the (L) life series, the (P) performance series, and the (S) style series. A SeriesThe bill: $3,699.96 for all but the carb. The results: 567 horsepower and 537 pound-feet of torque on 89-octane pump gas! That represents a 70-percent increase in horsepower. …The old 454 put out 230 HP and 385 LbFt of Torque. The Vortec 7400 as you know lays down 290 HP and 410 LbFt of Torque. Some differences are: 1. Switched to Mass-Air Flow. (454 used only MAP) 2. Sequential-Port Fuel Injection (454 only had 2 Throttle Body Injectors) 3. Steel Camshaft 4. Roller Lifters 5. 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We popped a Duralast Platinum Battery AGM Group Size 78 with 740 CCA ($194.99 with an $18 core) into the battery tray and ... bean teardrop trailer Chevrolet Performance Big Block Chevy L29 Vortec Cast Iron Cylinder Head. Free Shipping over $199* Same Day Shipping before 4pm* Price Match Guarantee; ... Performance Parts (1) Part Fitment Semi Universal (1) PRICE $750 TO $1000 (1) Items Per Page: L29 Vortec Cylinder Head.1. re-use existing pushrods which the rocker arm mfrs advise against. 2. purchase 5/16" dia custom length pushrods (7.572" Int, 8.525" Exh). 3. purchase new stock/OEM replacement pushrods (GM, Speed Pro RP3338, RP3339). upci churches in florida ١٠‏/٠٦‏/٢٠٢٢ ... <p>The ZZ502/502 Deluxe is Chevy Performance's most popular big block crate engine, offering excellent value & performance for either the ...These Chevrolet Performance 454ci/7.4L Engines are designed as a stock replacement, providing the big torque you need for pulling a trailer or other heavy loads, for 1980-2000 Chevy/GMC trucks, SUVs and vans. These engine assemblies are built to the same exacting engineering standards that go into every new GM vehicle.rpol98. i decided to go with the Comp Cams roller-tip 1411 rocker arms. i had to get the ARP 135-7102 conversion studs since the L29 7.4L cylinder heads are threaded for 3/8-16 rocker studs (why oh why!), and the CC 1411 rocker balls are 7/16 (std big block). problem i ran into is that the factory L29 pushrods are 5/16" (SBC dia), whereas the ...The Mitsubishi Lancer Evolution is now in Malaysia, priced at RM 315,436. 10 on the road without insurance together with a 1 year or 20,000km warranty.A friend has a 84 thousand mile L29 454 for sale its from a 1998 Chevy pu that was totaled, its a roller cam 4 bolt main block with 10141279 heads . ... fundations scope and sequence level 2 pdf. pirate weapons for sale. truth table examples and answers. Login vw t25 parts catalogue; quality control excel template; cheems dog breed. epic test ... simplifying complex numbers worksheet pdf Gains of 40-45 HP and 45-50 lb-ft torque depending on existing upgrades Gains of 1/2 - 1 MPG Maintains speed and higher gears when climbing hills Disabling of emissions systems (for competition or off road use only) Custom tuned for modifications such as aftermarket camshafts, exhaust, air intake, tire size, gear ratio, etc.This information on internet performance in Ourinhos, State of São Paulo, Brazil is updated regularly based on Speedtest® data from millions of consumer-initiated tests taken every day. After you've learned about median download and upload speeds from Ourinhos over the last year, visit the list below to see mobile and fixed broadband ...Now, the L-29 engine. It's heads are true small intake port large ovals at right around 230 cc's or so! This said, the chambers are 100 cc's and a modern, "heart-shape". Get one's CR again up into the 9's and go. Now see if you want to run a carb. or an EFI? Add small tube, (1.75" dia.), headers and such too.1998-2000 GM/Workhorse P32 with 7.4L Vortec Engine L29 ... I've made several performance upgrades myself, but are always looking for something better. cs7637 homework 1 github Jan 19, 2010 · Victor Reinz has designed two Nitroseal® head gaskets to specifically allow for this conversion. The installation requires Victor Reinz part number 4918 be installed on the right cylinder bank to maintain proper coolant circulation, and part number 4923 to be installed on the left cylinder bank for the correct coolant flow. A airboat Registered bone china tea cups made in england value The L29 (and L21 and Marine 454) are 19 lb/hr @ 3 bar, but the system runs @ 4 bar. Do not use injectors rated @ 3 bar only, they can lock. I have heard from someone who had LT1 injectors lock on him (open? Closed? he didn't remember). The LS1 injectors 98-00, are excellent drop in injectors, may be a tad rich in some cases, some not.Jul 27, 2016 - When the gang at COMP Cams decided to swap the camshaft in a 454-cubic-inch V8 L29 L.4-liter Gen. VI motor with an aggressive profile, ... tiktok leaks the vortec heads are actually a very nice head design and will probably out perform the 049 in your application. the semi closed chamber of the vortec increases your compression ratio and the 049s will drop it sacrificing alot of potential power. by wanting to keep your current injection system you will be limited to what mods you can do. (unless …٢٠‏/٠٩‏/٢٠١٠ ... GM Engine & Exhaust Performance - 454 l29 vortec performance build - hey well down at the shop i ran into a 454 vortec im new to this motor ...stereoseq cell; zampler free soundbanks; gujarati movie download website list; jeff x eyeless jack; lithtech lifepo4 erfahrungen; what is salish matter phone numberThe L29 in your year TBI was a 230HP (sick) and about 375lb/ft (sick) engine. Your static compression is just a shade under 8.0 to 1 (sick). This is a recommendation as I have done quite a few upgrades on 454 truck engines for towing including 2 for my personal boat towing uses and THEY WORKED VERY WELL! First things first, GET THE COMPRESSION UP! value of 1946 wheat pennyAug 25, 2015 · Fresh from the wrecking yard, the L29 454 was upgraded with a new, carbureted induction system and mild Comp cam. Run in normally aspirated trim, the carbureted 454 produced 428 hp and 504 lb-ft of torque. Adding a pair of Borg 475 turbos to the mix plus an air-to-water intercooler upped the power ante considerably. Your important power will also come from a good intake manifold and carb for your L29 engine. A nice Professional Products 53026 air gap dual plane intake and a Holley BR67214 Holley Carb should do everything you need. Don't over cam or over intake and carb those L29 stock heads and stock compression! carpediem Registered Joined Oct 30, 2016 2007 honda fit hesitation [Editor's Note: This L99 engine upgrade guide is part of a series of LS engine upgrade guides assembled by a team of LS experts at Summit Racing that we are sharing at OnAllCylinders. For a primer on the entire LS engine universe, read LS Engines 101: An Introductory Overview of the Gen III/IV LS Engine Family.]. Intro to L99 Engines. The L99 was introduced in 2010 and powered the Gen. 5 ... how old is tiffany nelson from not enough nelsons Oct 7, 2015 · The L29 head worked best with 27 degrees NA, but was insensitive to timing from 25-30 degrees. The Brodix head ran best with 36 degrees NA and this difference carried over once we added boost. Having run the 454 in both normally aspirated and supercharged trim with the stock heads, we quickly swapped them out for the Brodix Race Rite heads. Any suggestions on affordable performance upgrades for a 97 Vortec 454? I have a 3" exhaust with a Flowmaster. ... Come join the discussion about trail reports, builds, performance, modifications, classifieds, troubleshooting, fabrication, drivetrain, and more! Full Forum Listing. Explore Our Forums.VIN: J, Eng Code: L29. Genuine GM Parts. We are there for you after the sale too. Refer to the part manufacturer for accurate warranty duration. 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The occupancy projection for this year was lower than the previous forecast by 0.1% while projections for average daily ...That, my friends, is some serious power for a budget boosted big block, and the best part, there is probably even more waiting to be unleashed, … 10 lb weight loss The L29 is a Gen VI style traditional BBC, with a few notable exceptions: It has: Provisions for a hydraulic roller cam NO provision for a mechanical fuel pump Different timing cover than older Mark IV BBCs Different timing cover than older Mark IV BBCs L92, or any other non big block Chevy cylinder head will NOT bolt up.Ultra-thick, 5⁄8-inch flanges welded on both sides and machined perfectly flat. Fits so tight, it mounts without need for sealant or gaskets. Head-pipe assembly included. Includes necessary heat shielding. Accommodates spark plug heat shields, eliminating need for expensive plug wires. 5-Year Limited Warranty. 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These engine were rated at 310 Hp and made around 400 Ft-Lbs torque.7.4 Vortec Performance Upgrades Chevrolet 7.4 Vortec was a modern-day improvement of the firm’s most legendary big block. It was known as the Vortec 7.4 (7400, Regular Production Option designation L29) in North America and across other markets. duck life github There is L29 power to be made... BlastingBat998 May 16, 2019 May 16, 2019 #1 BlastingBat998 I'm Awesome Joined Mar 12, 2019 Messages 121 Reaction score 149 Location Preston, Idaho If any of you guys are looking for more power with your L29, Well, Here ya go... https://www.powerperformancenews.com/tech/the-500-question-budget-boosted-big-block/A forum community dedicated to custom off-road vehicle owners and enthusiasts. Come join the discussion about trail reports, builds, performance, modifications, classifieds, troubleshooting, fabrication, drivetrain, and more!Jun 15, 2017 · Now, the L-29 engine. It's heads are true small intake port large ovals at right around 230 cc's or so! This said, the chambers are 100 cc's and a modern, "heart-shape". Get one's CR again up into the 9's and go. Now see if you want to run a carb. or an EFI? Add small tube, (1.75" dia.), headers and such too. 2020 volvo semi truck price best bang for your buck would be to get a prop that runs around 4500 rpm at wot, trimed for top mph and have it labbed that could gain you around 2-3 mph. most 7.4 mpi's can turn a 23" prop to around 4600 rpms but a 25" could be to big try a few props to see what works the best (3 and 4 blades) and talk to other guys with your same set up SaveMar 4, 2019 · Your important power will also come from a good intake manifold and carb for your L29 engine. A nice Professional Products 53026 air gap dual plane intake and a Holley BR67214 Holley Carb should do everything you need. Don't over cam or over intake and carb those L29 stock heads and stock compression! carpediem Registered Joined Oct 30, 2016 the vortec heads are actually a very nice head design and will probably out perform the 049 in your application. the semi closed chamber of the vortec increases your compression ratio and the 049s will drop it sacrificing alot of potential power. by wanting to keep your current injection system you will be limited to what mods you can do. (unless …The L-29 heads are good for about 20--30 hp over round ("peanut") port heads--and some of that increase is due to the higher compression because of the smaller chamber in the L-29 head. They are not up to the task of feeding a real engine without (at least) major work. To be honest, I'm not sure "major work" is enough. tactical walking stick made in usa My L29 is a 98 Suburban K2500 7.4L, It would be interesting to see the difference between truck and Suburban. I haven't had much time to spend learning and programming lately, but removing most of the torque management and adjusting a couple of timing points made a hugh diffference in performance and gas mileage, but I haven't even checked mpg yet. Ultra-thick, 5⁄8-inch flanges welded on both sides and machined perfectly flat. Fits so tight, it mounts without need for sealant or gaskets. Head-pipe assembly included. Includes necessary heat shielding. Accommodates spark plug heat …UltraPower 7.4L ECM Benefits: Gains of 40-45 HP and 45-50 lb-ft torque depending on existing upgrades. Gains of 1/2 - 1 MPG. Maintains speed and higher gears when climbing hills. Disabling of emissions systems (for competition or off road use only) Custom tuned for modifications such as aftermarket camshafts, exhaust, air intake, tire size ... naked girls shitting on each other As good as the $500 454 is, the stock L29 truck motor (circa 1999) was originally rated at 290 hp and 410 lb-ft of torque. ... The high-lift cam and attending increase in engine speed necessitated a valve-spring upgrade. The well-worn stock springs were replaced by a set of 26120 beehive springs (and attending hardware) from COMP Cams ...My L29 is a 98 Suburban K2500 7.4L, It would be interesting to see the difference between truck and Suburban. I haven't had much time to spend learning and programming lately, but removing most of the torque management and adjusting a couple of timing points made a hugh diffference in performance and gas mileage, but I haven't even checked mpg yet. A forum community dedicated to custom off-road vehicle owners and enthusiasts. Come join the discussion about trail reports, builds, performance, modifications, classifieds, troubleshooting, fabrication, drivetrain, and more!Conscious. Sleeve Length. Price. Done. Home. up to 60% off across departments. Discount applies to selected items only | Expires 25/01/2023 at 23:59 | Only one promo code or offer per checkout | For free delivery min spend R500.This information on internet performance in Ourinhos, State of São Paulo, Brazil is updated regularly based on Speedtest® data from millions of consumer-initiated tests taken every day. After you've learned about median download and upload speeds from Ourinhos over the last year, visit the list below to see mobile and fixed broadband ...Jul 1, 2015 · Not only did the cam swap net an additional 52 horsepower (peak-to-peak), but the gains exceeded 80 hp higher in the rev range. Even better than the big peak gains was the fact that the cam swap ... new holland seat safety switch bypass Dec 9, 2019 · First step was to hook up a battery and turn the key on the old truck. We popped a Duralast Platinum Battery AGM Group Size 78 with 740 CCA ($194.99 with an $18 core) into the battery tray and ... Shopping Made Fun L29 Spark Plug for MERCRUISER Chevrolet Big Block 7.4L MPI 7.4L MPI MIE Buy on the official website Fashion flagship store kleeberger-brombachsee.de, C $10.58 4L MPI 7 Yard Outdoor Power Equipment 4L MPI MIE (L29) in Home & Garden Spark Plug for MERCRUISER Chevrolet Big Block 7 Chainsaw Parts Garden & Outdoor Living, save up ...Buy 7.4L 454 CID GM Engine From Karl Kustoms, One Of The Largest Online Retailers Of Chevy Performance Parts In The USA. Call (855) 806-1147 or Order Online! ... L29. Fits: 1996-2000 Chev/GMC Pickup, Suburban (CK2,CK3) 1996-2000 Chev/GMC Van (G3) 1996-1999 Chev/GMC Chassis (P3) Note: 4 bolt mains, 1pc rear seal. Manufactured with hydraulic roller …The L29 has a very mild almost "lazy" cam from the factory. Cam, and tuning does wonders to wake them up. My 2000 K2500 had 2-7/8" to the muffler then went into a single 2 … umbrella armory warranty Aug 25, 2015 · Fresh from the wrecking yard, the L29 454 was upgraded with a new, carbureted induction system and mild Comp cam. Run in normally aspirated trim, the carbureted 454 produced 428 hp and 504 lb-ft of torque. Adding a pair of Borg 475 turbos to the mix plus an air-to-water intercooler upped the power ante considerably. Make plenty of low end and mid range power to get that truck moving. You will have to convert to an adjustable drive train with any after market camshaft. We have a kit that …Apr 14, 2016 · As for heads. you will need all the basics most machine shops can tell you what they need. screw in studs and guide paltes. along with good roller rockers some higher ratio than stock if going really high the studgirdles are also really useful. Lots of stuff out there for the older big blocks not sure too much on these newer ones. Gains of 40-45 HP and 45-50 lb-ft torque depending on existing upgrades Gains of 1/2 - 1 MPG Maintains speed and higher gears when climbing hills Disabling of emissions systems (for competition or off road use only) Custom tuned for modifications such as aftermarket camshafts, exhaust, air intake, tire size, gear ratio, etc. how do i reset my nvr to factory settings Jan 23, 2011 · rpol98. i decided to go with the Comp Cams roller-tip 1411 rocker arms. i had to get the ARP 135-7102 conversion studs since the L29 7.4L cylinder heads are threaded for 3/8-16 rocker studs (why oh why!), and the CC 1411 rocker balls are 7/16 (std big block). problem i ran into is that the factory L29 pushrods are 5/16" (SBC dia), whereas the ... The heads were cut 60thos, to boost compression and with the roller heads and cam and a Baker carb 2 barrel carb that flows over 600cfm she pushes over 300hp on the dyno. 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We have a kit that …Oct 7, 2015 · When compared to the 100cc chambers on the L29 heads, the head swap dropped the static compression ratio from a decent 9.0:1 to a pathetic 7.78:1. Since each point of compression is worth roughly 3-4% in power, the loss of compression from the head swap hurt power by 5-6% (roughly 25 hp on the mild normally aspirated motor). 1. re-use existing pushrods which the rocker arm mfrs advise against. 2. purchase 5/16" dia custom length pushrods (7.572" Int, 8.525" Exh). 3. purchase new stock/OEM replacement pushrods (GM, Speed Pro RP3338, RP3339).Run em with a 2000 - 2400 stall conv, 210 - 220 @ .050 cam (GenVI roller) and some 3.31 gears with a T400. Crazy how it all comes about. I am ready to build my 454 and … odp tryout results