Baseplate gasket

[mcx]

Hello Cliff
When swapping a non original carb from another make, such as a Buick qjet on a Olds, Pontiac, Chevy, ect,   does the intake manifold dictate the choice of base gasket ? Or does the swapped carb? does it matter?  Thanks.

[Cliff Ruggles]

Usually it's the intake but sometimes it can be both.

The early 70's Buick divorced choke carbs with the rear pull-off, for example, will NOT work with some of the later gaskets.

Always check each set-up to make sure the gasket you are using seals well both against the intake and against the carburetor.

I stock all currently available carb to intake gaskets for the Q-jet, so call the shop if you aren't sure what to use and need one for your particular combination........