Differance between LS1 and LS6 engines Fbody/Corvette etc...
Differance between LS1 and LS6 engines Fbody/Corvette etc... So I had a mishap in my 01 Z06 and looks like I need a new motor. I can find LS1's from Fbodies ALLL day for cheap. I will be installing aftermarket heads and a cam so I could care less about those, but if I were to get a low mileage LS1 short block for my Z what would I be short changing myself on if anything.
Only thing an LS6 had over an LS1 really was 243 heads (and the LS6 Intake, but 01-02 LS1's had the LS6 intake anyways).
With aftermarket heads/cam I would just get a LS1 shortblock (maybe LS2 if you could swing it) and go to town.
With aftermarket heads/cam I would just get a LS1 shortblock (maybe LS2 if you could swing it) and go to town.
The ls6 blocks also had breathing "windows" between the main bulkheads and the cylinders, while the ls1 blocks have a smaller hole drilled through the main bulkheads. Truck blocks get a cast window, but in the ls1 location (i'd have to go look to be 100%) l33 (ally truck block, 05+) gets the ls6 window location.
GM has been making the windows bigger as they progess with this engine family, and the ls9 has the biggest windows yet.
Little writeup here:
http://www.camarohomepage.com/ls3/
GM has been making the windows bigger as they progess with this engine family, and the ls9 has the biggest windows yet.
Little writeup here:
http://www.camarohomepage.com/ls3/
TECH Regular
Joined: Jun 2010
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I believe those holes you speak of are only on early 97,98 blocks. Not to sound all roman on you. Just make sure its not a block from those years as GM improved the breathing between the cylinders, oil passages, and im sure im forgetting something else. If your going aftermarket heads/cam that plus the intake were the major differences between the ls1/ls6. Short block is the same.
