Thumper cams
Le Mans Master
Joined: Jan 2007
Posts: 6,005
Likes: 1,510
From: Prescott Arizona
Gavin - As Westlotorn mentioned, you could see a bit of an increase in compression if you went to smaller chamber heads but they aren't cheap. The 427 I'm building will be running the Edelbrock Oval Port #60499 heads and they have small 100cc chambers. I just looked up on Mortec to see what your friends heads might be, chamber size-wise and just guessing that they are maybe up around 116cc's. Swapping heads, and using a relatively thin head gasket like .039, could gain nearly a full point of compression but that only puts you up around 9 to 1. And, a set of those heads would beat the hell out of the budget since they are over $1100 each. Just another option.
Mike T - Prescott AZ
Mike T - Prescott AZ
Thread Starter
Drifting
Joined: Sep 2017
Posts: 1,951
Likes: 748
From: CT
Gavin - As Westlotorn mentioned, you could see a bit of an increase in compression if you went to smaller chamber heads but they aren't cheap. The 427 I'm building will be running the Edelbrock Oval Port #60499 heads and they have small 100cc chambers. I just looked up on Mortec to see what your friends heads might be, chamber size-wise and just guessing that they are maybe up around 116cc's. Swapping heads, and using a relatively thin head gasket like .039, could gain nearly a full point of compression but that only puts you up around 9 to 1. And, a set of those heads would beat the hell out of the budget since they are over $1100 each. Just another option.
Mike T - Prescott AZ
Mike T - Prescott AZ
