350 club : Vortec 350 (L31) - GM Truck Club Forum
Jul 11, 2014 · The Vortec 5700 L31 (Vin code 8th digit "R") is a V8 truck engine. Displacement is 5.7 L. It is the last production Generation I small-block. The cylinder heads feature combustion chambers …
5.7 L Vortec L31 Torque Monster Build Suggestions.
Nov 8, 2011 · The L31 Vortec 350 that was installed in all GM half ton trucks (Pick-ups, Tahoes, Suburbans, Vans) put out 255 hp and 330 lb-ft. Whoever told you 430-450 ftlb of torque was off by …
1997 1500 5.7L performance upgrades? | GM Truck Club Forum
Dec 7, 2014 · The L31 also known as the 5.7L Vortec V8 has one of the largest aftermarkets of any "modern" GM truck engine as its a Chevy small block and its parts are used as performance …
99 Yukon HP and Performance Specs - GM Truck Club Forum
Jul 20, 2007 · As such, the L31 head is compatible with all older small-blocks, and is a very popular upgrade. It offers the performance of more expensive heads, at a much lower cost. It does, however, …
Timing Cover seal w/ Fel-Pro Oil Pan gasket; 1997 5.7L Vortec (L31)
Aug 15, 2020 · PROBLEM: I have an oil leak out of the bottom of the Timing Cover on a 1997 5.7L Vortec. I've tried 3 times already to get it to seal properly. The Fel-Pro Oil Pan gasket say it DOES …
Older model 350 block and vortec heads? - NastyZ28.com
Apr 19, 2009 · I am posting this for a friend who is wondering if he can use his older 350 block with vortec heads.He says the block is stamped with the #3970010 on it.Can anyone let me know if this …
1999 4x4 K-1500 5.7L 350ci Vortec Remove and Replace - GM Truck …
Feb 21, 2018 · L31 will be much easier to swap into your truck, sence that is what you already have. Some time back, I was looking at phoenix engines, and posted to a thread on GMT400, about what I …
99 Chevy Coolant Leaking.... **SOLVED | GM Truck Club Forum
Jan 2, 2009 · Sorry.. L31, 5.7L Vortec gas engine. Think the last 5.7L diesel was an olds engine wasnt it? Anyhow. -35'c out there with the winchill.. So I took as many pics as possible in a short period of …
Small Block Chevy Engine Block casting and code identification
Sep 14, 2012 · Chevy Small Block - Engine Block Casting Numbers Notes (for below): "High Power" is the maximum rate HP this block was used for, "Low Power" is the lowest rated horsepower RPO …
L33 cam swap - GM Truck Club Forum
Sep 17, 2013 · This is also from the GM powertrain website, the key word is "like", yes the L33 uses components from the LS6 and is constructed like the LS1, but the bore and stroke is actually a 326. …