1967 belvedere claimed as a gtx.

[Steve Stasko]

Originally Posted by 1347

not sure how much you have to take off a 906 head to turn it into a closed chamber head, but won't that effect piston to valve?

Speaking from experience... If you take the 906 down to closed chambers, it's not a matter of if they will crack between the cylinders, but when. I suppose in a Stocker though, cutting the surface down to 74 cc, it's still going to leave a little of the chamber in the head.

Paul is pretty close on his numbers. The last 906 I measured was 85-86cc, and I know it had a light cut. If I was going to cut an open chamber head down though, I'd use a 452.