Originally Posted by a.r. Shale targa

i remember reading that article also however i don't think gm was concerned
w/resleeving for max horsepower when they designed the breathable
crankcase(weaker structurally). Also people that buy c5s probably like the
fixed roof coupe look, vented brake calipers and 150 less pounds. Thinner
glass, aluminum perimeter frame, taller first gear trans, and 295 rubber out
back. Plus corvette guy likes the badges that say i'm a bad ****

Originally Posted by 233239SS

Just trying to clarify this for myself, Differences are Cam, Heads, Intake, Manifolds, and some kind of porting inside block that creates no power gain. So if you took a stock LS1 and Stock LS6 and installed the same aftermarket Cam/Heads/Intake/Headers on each they should put down roughly same power correct?

Originally Posted by Boc36

The main difference is the piston sleeve in the Ls1 bells at the bottom the Ls6 goes further down therefore you can't stroke an Ls1 to a 383 as where with an Ls6 you can