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03-24-2005, 10:53 AM

Ford specs from Service Bulletin dated 9-17-1947:

59A-6050-A, 77-79CC

59A-6050-B,73.5-75.5

iron 81A-(the "A" head) 77-79

8BA&8RT, 73-75

Reality may differ...

The real high compression heads were the 81S and 91S Denver heads--I think the 81 is about 60.

03-24-2005, 10:53 AM	#4
Guest Posts: n/a	Re: "A" heads on 59AB block;compression Ford specs from Service Bulletin dated 9-17-1947: 59A-6050-A, 77-79CC 59A-6050-B,73.5-75.5 iron 81A-(the "A" head) 77-79 8BA&8RT, 73-75 Reality may differ... The real high compression heads were the 81S and 91S Denver heads--I think the 81 is about 60.