are stock 1990 l98 heads 64 cc

 

yes they are

 

no i do not believe they are 64cc i have an 85 vette and a friend has a 86 steel head vette and both are plain jane 76cc heads i do not believe they started puting different motors together in the late 90s just for camaros the vette went 58cc in 86 and half but i believe the camaro kept the same heads and pistons. untill the lt1 came out

 

All the L98's I've had apart have 64cc heads.

 

i agree

 

unless the corvette steels are different

 

CORKVETTE1 can you get some casting numbers? I've never cc'ed a head but everything I've read shows an '87 and up cast iron head (083) as 64cc. I know there are tolerances in the manufactoring process but I doubt it would be 12cc differance. What was the casting numbers for the pre 87 TPI?

 

here is head casting numbers from 85 corvette and early 86 vette
462624

 

maybe they went with different heads for cams and birds

 

They could have. I wonder if the higher compression was part of the way the newer engines upped the hp. I haven't been around enough TPI engines to really know. I wasn't doubting you....I was just going on the info that I had for my 87 & up heads. Hmmmm....makes ya wonder what the General was up to at times!

 

same here i am just going by the info on the vette heads i thought they would be the same maybe not

 

maybe i should be loking for 87 and up camaro heads and get some free compression