skyhighsami

iTrader: (8)

I am having to rebuild the motor in my Camaro and it is a 402 stroker motor. I have an iron block, how much could I bore the block safely? Thanks

LQ4 Turbo

My guess would be 30 over, max? I could be wrong?

skyhighsami

iTrader: (8)

I am getting alot of guessing and thinking but no definate answers. I know people are making big cube motors. Are they using the LS2 and sleeving it or just running more stroke?

jkwalkercchs

iTrader: (20)

yea the most i have heard is 30 over

Wilde Racing

iTrader: (26)

they make pistons for 60 over, it is alwas best to get the block checked first...

brobradh77

iTrader: (3)

I dont know the 30 over terminaligy i'm a rook that cant spell...lol but someone just did it and its was strooked and now a 370 if that helps at all.

nightrunner

iTrader: (4)

i know on the trucks most everybody is using a 6.0L truck iron block and boring it .030" over for a 370 with stock stroke or a 408 with 4" stroke. a 402 would be stock bore with 4" stroke.

if you are just wanting to rebuild it, go .030" over. if you are looking for the max bore you can get, get the block tested to see how far you can go and then go from there.

skyhighsami

iTrader: (8)

I will find out very soon I promise. My goal is 416 if I can

nightrunner

iTrader: (4)

highly doubt it, dont know how much of an over bore that would be but ive NEVER heard of more than a .120" over bore without overheating problems unless resleeved.

skyhighsami

iTrader: (8)

With a 4 inch stroke it would be a .060 over bore. That would yeild a 416