does any one know what cc the l98 heads are.i'm getting a 88 iroc and i'm trying to figure out the cc on the heads before i get the car.soon as i get it i could run the heads on mortec and figure it out.trying to see how much compresion i'll gain if i swap out the l98 heads for the ones i got for the pro stock engine i was going to do.

 

Stock L98 083 heads have about a 165cc runner and have a nominal 64cc chamber.