Alvin,
This is why I should never post from memory:
Corrections:
LS1 was introduced in 1997 in Corvette (RPO LS1), then Camaros and Firebirds 1998 and trucks in 1999 (at least got that right). 5.7l displacement all-aluminum.
Also, "sequentially fired" while technically correct, is not the right term for what I meant to describe, which was that they are individually fired with a coil for each cylinder (and a way to identify them by sight).
Firing order 1-8-7-2-6-5-4-3 is not the same as original smallblock 1-8-4-3-6-5-7-2...
This from the book "How to Build High-Performance Chevy LS1/LS6 V-8s" by Will Handzel, of which I have two copies of since it was apparently published with two different covers, thank you Car-Tech books.
Here is a handy guide to all the LS engines, including production dates. ls1tech.com/forums/conversions-hybrids/1369110-lsx-engine-identification.html
That site (ls1tech) is to LS motors as Stovebolt is to old Chevy trucks. If you want to know more....you can have it at for days and days. My life will be close to fulfilled if I ever have time to learn how to program/configure the engine management computers for these motors.
Last edited by R-Bo; 04/08/2014 3:55 AM.