[65nss4spdGTO]

Originally Posted by charlie66

I don't know much about what valves I got , but my machinist said that the exhaust valves are of a odd size . He had to buy the valves and cut them down to fit the seat that where in this head.. ...

I use Manley valves, they will make pretty much any size valve that fits a Pontiac head, Stainless and Super Alloy. Your cylinder head guy can specify a valve with all the details, create a blue print for re-orders in the future.

Great products and customer service.

Calvin Hill
Hill Performance
708-250-7420

[charlie66]

Originally Posted by 65nss4spdGTO

I use Manley valves, they will make pretty much any size valve that fits a Pontiac head, Stainless and Super Alloy. Your cylinder head guy can specify a valve with all the details, create a blue print for re-orders in the future.

Great products and customer service.

Calvin Hill
Hill Performance
708-250-7420

Good idea .

Thanks Calvin