cutlass_455

iTrader: (2)

Hey dudes, how far can you safely overbore a 2001 4.8/5.3l block, without ultrasonic testing or anything crazy like that?? I have a 4.8L complete engine and want to build a 408-ish motor.

dug

iTrader: (10)

you can bore it out to the 5.7L bore 3.9" but not to the 6L bore of 4". with 3.9 bore and 4" stroke you can get 383

SweetS10V8

iTrader: (4)

So you willl spend thousands on a stroker rotating assembly, and not pay $400 for a 6.0L block??

dug

iTrader: (10)

good point. Im just telling him what can be done.

cutlass_455

iTrader: (2)

Thanks for the replies. Im sorry I wasnt a little more clear in my intentions.

I was just asking to see if it was even an option, a little pre-planning if you will.

Also, where I live, 6.0L blocks are NOT found for $400. A decent entire engine must normally be purchased, and basement price on that is usually around $2000, from wreckers.

In Canada prices are different, and its harder lots of times to get the prices you guys get. A fresh 6.0L block right from GM there is like $5-700, here its like $1500. Not very fair.

On top of this, all "LS1/LS6" engines get hoarded by an Fbody 'speciallist' that absolutely rapes people for them. He usually charges $6-8000 for a LS1/T56. Which is absolute insanity.

And besides, I mentioned that I was curious about building a 408ish motor, which no matter what block I use, 4.8/5.3 or a 6.0, Ill have to "spend thousands on a stroker rotating assembly" anyways.