Pontiac had an optional Rochester Q-Jet on the OHC-6 250 CID. Don't know if the manifold would fit or not. Carb should be just perfect for a warmed up 250 Chevy.

Jon.


Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop