What year is a 7A head. It's not the 72 7a head but the 7A casting. I know it's a later head because it has 1/2 head bolts. Any help would be appreciated.

 

I have it on my stocker 1987 and 88. May fit others

 

Mike, 7A 1985-1990 307. Used on the newer hydraulic roller-lifter engine. Possible port matching problems with aftermarket intakes and exhaust headers. Square ports, height equal to port width, which flows less than 5A heads. Rotator style spring retainers were used on the intake and exhaust springs.

from https://oldsjunction.classicoldsmobi...sfaq/ofhed.htm

 

Tanks

 

Need another set cheap?

 

I do. I'm in Phx Az. Shipping could be silly high.

 

To add to this, the 7A heads used on the 1985-90 roller cam 307s have smaller exhaust ports than do normal SBO heads and are the only ones to have come from the factory with exhaust gaskets. The crappy stainless tube manifolds on these cars require those unique gaskets to seal properly.

 

AKA "Peanut Port" heads. Swirl-port design for even greater fuel-economy and emissions, they said. They're fine for rock stock use. They're arguably the worst head you could ever get for an Olds V8 in the history of Olds V8s from a performance standpoint. JMO.

 

Hey,go easy on my heads,they're very sensitive to criticism.