7040511 - California smog emissions (LEAN) Chevrolet 350.

Spread-bore to square-bore adapters are for snake-oil salesmen ;), not for engines.

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