I have a 1981 formula that i am restoring. I want to use the heads on the engine the car came with but dont know the specs on them. The engine seems to be a 305 out of an 86 camaro. The heads casting number are 1410108. Does anyone know the valve stems sizes, max lift, and combustion chamber size of these heads, and are they vortec heads?

 

14101081...87-95...305
14101083...87-up...350

Gen.I, also used on crate motors, 285 or 300 hp, 64cc chambers, 72' center manifold bolt angles

- Justin