L29 vortec head build

Author: ojfv

August undefined, 2024

WebJul 24, 2012 · 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. WebApr 7, 2024 · I currently have a bone stock 96 K2500 with a 7.4 L29 vortec with a 4l80e behind it with 190k miles on it. Just put a full tank through it this last week pretty much all highway use (empty) and got 13 mpg. The L18, empty, with a good tune on it, will get roughly the same as that.

Chevy 10141280: L29 Vortec Cast Iron Cylinder Head - JEGS

WebJan 15, 2008 · 4,378 Posts. #2 · Jan 9, 2008. lt1yj said: It appears I will be rebuilding the Vortec 454 that will be in my next wheeling truck (winter '09 build). I don't have it out but it sounds like it spun a main bearing. The motor is completely stock now but I'd like some input on compression, cam and head work that will wake this motor up. WebJun 7, 2010 · To this power output we decided to add a small shot of nitrous and reach for no less than 700 hp. While a 700hp big-block build is not ground breaking, reaching 700 hp for our self-imposed... microtech texas

Small Chamber BBC Heads on a Budget - L29 Vortec or Old...

WebMar 1, 2011 · I had planned to build a copy of the HT383 using the same cam, Vortec heads, 1.6:1 roller rockers and a dual-plane Air-Gap intake with a Holley 670 truck Avenger carburetor. WebDec 6, 2008 · I have some facts regarding the 98 L-29 Vortec heads. Some say they are good some say they are junk. Here are the facts that pertain to my project. Of course the flow numbers will be different from one flow bench to the other but what’s important here is what’s the before and after flow numbers. WebAug 25, 2015 · Equipped with the COMP XM cam, Edelbrock intake and 750 Holley carb, the mild L29 454 produced 428 hp at 5,400 rpm while grunting out 504 lb-ft of torque at 3,800 rpm. Adding boost from the custom twin-turbo system resulted in some serious power. Running 9.3 psi (9-pound wastegate springs) resulted in peak numbers of 733 hp and 764 … new show surface

Chevy Performance BBC L29 Vortec Cast Iron Cylinder Head - JEGS

WebSuitable for towing, the Chevrolet Performance Big Block Chevy L29 Vortec Cast Iron Cylinder Head was used on 1996-2000 GM trucks/vans/SUVs with 7.4L 454 engines. … WebApr 17, 2024 · Vortec heads have a taller guide boss to give additional support to the valve stem, which means they only handle about .420” of lift. Up next, you need to decide if you … new shows to stream 2021WebJan 22, 2009 · Also, the L-29 heads wont support .600 lift without cutting down the valve guides and installing aftermarket seals. With the 502 cam I still had to cut down the exhaust guides (I think it was exhaust I'm not 100% sure). 230" Dragster - 2000 LS1, 02024003 Speed Density, PRC 2.5 Heads, MS3 Cam 237/242 .603/.609, Vic Jr. intake, Holley 1000CFM TB, new shows tv

"WebDec 3, 2024 · It also seems that the L29 heads heads are down a minimum of 20 cfm between 400" lift and 550" as compared to the 49 casting. Just that alone will make for a minimum 5 hp per cylinder difference for a total minimum loss of 40 hp! " - L29 vortec head build

L29 vortec head build

Chevy Performance 454ci L19/L29 Truck Crate Engine - JEGS

WebMay 22, 2014 · Vortec L29 Heads 99cc chamber volume (small ovals) Further Head specs-Intake Port Flows CFM @ Lift 63 .100 121 .200 165 .300 198 .400 226 .500 242 .600 Valve … WebJul 29, 2024 · 1980RS. Veteran Member. Jun 17, 2006. 6,725. MN. Tonight I just got done taking the 906 Vortec heads off the 406. To my surprise there looks to be rust trails in 3 of the chambers by the exhaust valves. Huh, I had the heads crack checked and both were ok, (only 40K) never overheated so what's the deal?.

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WebApr 17, 2024 · Vortec heads have a taller guide boss to give additional support to the valve stem, which means they only handle about .420” of lift. Up next, you need to decide if you want to use the original valves or make some upgrades. On this particular set I wanted to put some bigger 2.02” and 1.60” valves in so I got a set of our Speedway Super Duty Valves. WebJan 22, 2009 · Also, the L-29 heads wont support .600 lift without cutting down the valve guides and installing aftermarket seals. With the 502 cam I still had to cut down the …

WebSep 27, 2024 · The stock Vortec iron head will not tolerate more than 0.440-inch lift. We measured our stock iron heads right out of the box and the retainer-to-seal clearance was only 0.470-inch. Subtract the standard 0.050-inch clearance, this leaves only enough room for a 0.420-inch lift cam. That just won’t do. But don’t despair. WebAug 30, 2010 · Obviously, better flowing heads will help output. Both Vortec 7400 heads (the '98-'01 12560241 and the '96-'01 10141279) have about 100cc chambers. As you can see …

WebLowest Price Guarantee. L29 Vortec Cast Iron Cylinder Head. 1991-2000 Big Block Chevy Gen V/VI Engines Only. Bare Head Sold Individually. See more product details. Free … WebChevrolet Performance L29 Vortec Cast Iron Cylinder Head Part Number: 809-10141280 ★★★★★ Write a review Product Q&A View Now Click image to zoom $905.99 Lowest Price Guarantee L29 Vortec Cast Iron Cylinder Head 1991-2000 Big Block Chevy Gen V/VI Engines Only Bare Head Sold Individually See more product details Free Shipping - Ships on …

WebJan 22, 2024 · 454ci/L29: Rated at 290 hp, The Vortec 7400 is the last-generation 454, with the same 4.5x4-inch bore and stroke as before. Like the Gen V, all engines feature four …

WebThese 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. news howth sutton baldoyle bayside microtech tool kitWebJul 24, 2012 · Found a complete, running, 1998 454 vortec (L29?) out a chevy 3500 with computer and harness for $750. Thinking about replacing the pontiac 455 in my trans am … microtech tony marfioneWebMar 10, 2024 · Toss those L29 heads, they need too much work to make anything. I have a 461 7.8 compression in my Camaro I have been testing, I ported some 236 Peanut Port heads and this engine makes mounds of torque. The PP are easier to work on and will make more power everywhere in the power range. microtech tools nashikWebOct 2, 2005 · The Vortec big-block was gifted with a sequential port fuel-injection system that provided more power than its predecessor (throttle-body injection), but it still wasn't … microtech tool setWebApr 14, 2016 · A few weeks ago I bought a very low milage 454 Gen. VI L29 Vortec engine with hydraulic roller. I have now disassembled the entire engine (except the crank and … new show suitsWebStep 2 Install a high flow air filter and cold air induction intake. A restrictive or clogged air filter will force the engine to work harder to breathe, which makes it less efficient. A cold air induction setup will feed the engine cooler and more oxygen-dense air. new show the accused