XtraCajunSS

iTrader: (2)

we take 5.3 blocks out to 3.910 without problems... (99.314mm) There is plenty of wall thickness.

Thanks,
Shane

blackz93

iTrader: (2)

Wow! Didn't know that.

Mike454SS

iTrader: (4)

To everyone talking about more or less efficient burns and whatnot...looking at the timing curves that the different engines run will give you some insight to that. Camshaft plays a large role in it as well, but it's a whole system, and everything influences it, including bore size.

NemeSS

iTrader: (127)

but it only works on the 5.3/4.8 blocks,
dont go trying it on the 6.0 blocks, now

the_merv

iTrader: (88)

Alot of people..myself included..are doing quite well with the easy achievable 4.000 x 4.000 402ci setup. It's probably the simplest to go with for anything over 400ci..

4.200 is pushing it for a Bore unless it's a LSX..the LS7 is 4.125 bore..and they are thin.

MAC4264

4.00 x 4.00 is easy. But go check my thread out in GenIV internal: 4.00 stroke / potential piston rock. I will say going fast right isn't easy.

InchUp

iTrader: (2)

I had my block sonic tested before AND after the machine shop bored the block over. My #2 and #6 cylinders are now at minimum wall thickness at just a 99mm bore. Careful with those 3.910" bores. Yikes.. .