1969 z 302

[Hotrodpaul]

From what I have seen the 041 head was cast in Tonawanda and primarily used on the 300 Hp 350 applications to help supply the Flint plant due to high demand. It may be possible they could have machined a batch of 2.02 heads to replace the 186 heads in Hi Po applications. My 70 SS Camaro 350 was a 3970014 block cast in Tonawanda and used 041 heads.

[jdv69z]

Originally Posted by Hotrodpaul

From what I have seen the 041 head was cast in Tonawanda and primarily used on the 300 Hp 350 applications to help supply the Flint plant due to high demand. It may be possible they could have machined a batch of 2.02 heads to replace the 186 heads in Hi Po applications. My 70 SS Camaro 350 was a 3970014 block cast in Tonawanda and used 041 heads.

If I remember correctly, John Z, a GM engineer who was involved in the manufacturing of these cars when they were being built, stated that the tooling required for 2.02 head machining only existed at Flint. So if an 041 was a Tonawanda casting, it would have had to had made its way to Flint to be machined. I believe that did occur with some Tonawanda block castings when demand was high and Flint's block supply was behind, so it could be plausible.