theskyisthelimit0818

i am swapping out a 5.3 vortec in my 79 chevy shortbed...i was considering a lt1 and throwing a 383 kit in there, but working with a lt1 is like making a deal with the devil...ive had a 383 lt1 in the past...not the best engineering..

so my question is has anyone every bored out a 5.3 vortec? if so how far...

can anybody help me out with a build of maybe where somebody did it...

thanks alot, corey

chevyboy91188

iTrader: (15)

Ever heard of the "iron block ls1" that's what you have there. It can safely be bored out to the ls1 bore and you can throw in an ls1 crank. I'm not sure if you can o with a longer throw but its been asked on here a million times just search it

deuce4935

iTrader: (2)

I bored a 5.3 out to the ls1 bore which puts the block at it's limit. All you need is the ls1 pistons, the rods and crank are the same in both engines. Fwiw, the 5.3, 5.7, & 6.0 all use the same cranks and rods with different bores. The 4.8 is the black sheep that uses a smaller crank which could make for some hi-rpm winding if that's what you're into.