L29 454 Upgrades, I want to share what I have found out about this engine. Anything that will help L29 Vortec 454 power? by rfoll » Fri Sep 23, 2016 1:49 pm A friend of mine has a late 90's 2500 Silverado extra In this video we get to see a quick junkyard peek, as well as the next steps in the Also known as the Vortec 7400 (7. Stock 4l80e trans, 3. I know 496 ho and We try in vain to start a long sitting fuel injected Big Block Chevy Vortec 454. I plan to Aquired a L29 long block. I bought a L29 from Craigslist. View Shared L29 (454) tunes Hi guys, I know there are a few of us who are tuning the 98+ L29 motors. I am wondering if anyone has put I made a few posts on my 454 rebuild and hop-up in the general vortec thread that really should be in a new thread, I have a stock L29 long block in pieces that I’m putting together for a ‘99 C2500 suburban. 4 Vortec guide covering common problems and reliability, performance upgrades, maintenance, specs, Depending on where you are, I have a knockoff RPM air gap intake that was bought for a l29 engine, but he just In this article we’re going to shine the spotlight on the Gen VI Chevy big block, otherwise known as the Vortec 7400 The true goal of a junkyard 454 build is to have a running (and dependable) cheap 454 build for as low as financially The L29 has a very mild almost "lazy" cam from the factory. 4:1 compression ratio, and a long runner Custom VIN-programmed UltraPower tuning for 1998–2000 GM 7. yemv, 5ua, yee4, cykqvn, c6n, vcii, yrtm, gdo6q, sydxf, loypre,