Need4Camaro

iTrader: (1)

I believe the 4.8L and 5.3L blocks are the same...

Can an LS1 stroker kit (crank, rods, and pistons) be used to stroke these motors into a 383? A 4.8L would be a very cheap starting point if I got an old motor because this in a sense would be pretty much rebuilding it right?

speedfreak391

iTrader: (2)

Now that is a good question. But I have heard that you can bore the 4.8/5.3 blocks out to a 5.7. Now if that is true you should be able to stroke it to a 383.

Jim85IROC

iTrader: (6)

I've heard that as well, but my thing is this... 4.8s aren't any cheaper than 5.3s, so unless one falls into your lap, why bother?

deuce4935

iTrader: (2)

The 4.8 and 5.3 blocks are the same which is why the blocks are stamped with 4.8 and 5.3. Yes they can be bored to the ls1 specs and add a 4.00" crank and you'll have that 388 if im correct.

white84z

iTrader: (1)

Its actually a 383. I will be working a a 396 (3.905x4.100) ls1 for my prerunner style pickup. Ive seen several done and they seem to show less bore distortion than the aluminum blocks.