Anyone know the cc of the stock LT1 heads.

 

It is supposed to be 58cc, but it would vary a little from car to car.

 

Thanks for the info.

I wish someone post LT1 engine specs and stick it to the Forum.

 

I thought it was 54.5 cc. A little smaller than the old L98 heads. But this may be the LT4 heads.

Anyway got the "Rebuilding LT1/LT4" book and this is the info they had. They said the LT4 had more compression due to less valve relief area in the pistons versus smaller combustion chamber.

Lance

 

The LT4s have the "fast burn" 54.4cc combustion chamber size. LT1s are 58cc.

 

Doing a search should net you an accurate response/answer.