fish5225

We originally went .03 over on a 408 stroker, 6.0 liter iron block. Worked great, put a tvs 1900 on top and made 727 hp and averaged 650 ft/lbs on 6.5 lbs of boost. No oil burning and my gas mileage went up over the old 6.0. Now the important news, broke a value spring and dropped a value in the motor. Beat the crap out of 5 pistons and scratched 5 cylinders. The good news is now we can still use the block without a sleave and bore to .04 over. At .06 over if something goes wrong you are **** out of luck. Go .03 over, stroke it correctly and you'll enjoy the **** out of it.

budhayes3

iTrader: (19)

IMO, bore it as little as you need to If it were me and I could get away with just a hone, that's the route I'd go. As mentioned, if you go 60 over from the start and something happens, you're **** outta luck

pewterliftedz

iTrader: (4)

some good info guys... i was always curious y people wouldnt go bigger than .03 over.
now it makes sense, if i cant find a lower mileage lq9 i'll just get a high mileage and go .03 over..
i want the LS2 rods incase i wanna spray

fastlt1

iTrader: (4)

Can a 6.0 be bored to 6.2 and just use stock 6.2 pistons?

pewterliftedz

iTrader: (4)

well the 6.2 bore is 4.06.. im just not sure on the rods, im sure someone will chime in weather its possible...

Mangled03gmc

iTrader: (95)

Wouldn't that make it a .06 over 6.0??? In which case was said not to be the best option... I do believe the blocks on both engines are diff

1slow01Z71

iTrader: (36)

The older blocks had bad core shift and some couldnt be bored .06 over. Its a good idea to get the blocked checked after boring it that much. Ive said it before, if you want to get a long life out of a stroker go with an aluminum block. The cylinder skirts are deeper and stabilize the piston more, therefore less oil burning. When/if I do another stroker it will be out of an LS3 block.

dug

iTrader: (10)

supposedly its possible to bore out to 4.080 if you sonic testing the block.

Black'Rado

iTrader: (8)

well if u plan on spraying...just bore to 4.03 and put a set of forged rods and pistons with stock crank and have a 370ci.

Flaco

iTrader: (4)

4.065 and making 1200+ here u will be fine...