stickymickey80

What is the stock ls1 bore size? And if not 4.oo how do i get it to fit the L92 heads? I have a LS1 and im trying to run the L92 heads with the new fast 102/102mm and a trex cam. this combonation is possible?

twitchtwice

iTrader: (12)

3.898

https://ls1tech.com/forums/generatio...ls1-block.html

Deerhunter-Z28

Go to the internal section and post, you'll get help a lot quicker there.

danhr

iTrader: (18)

As mentioned before, the stock ls1 has a 3.89" bore

You need a 4.0" bore to run L92 heads.

Mast Motorsports does make a L92 style head to fit the 3.89" bore though (here)

That heads/cam combination sounds horrible.... but good luck with it!

thesource

iTrader: (60)

More air flow can be had with a larger bore.