There are so many different carb adaptors. I just ordered an edelbrock air gap intake which accepts square bore carbs, but for now i have to stick with what came on my 1989 350 mag...I know its spread bore, I think its a quadrajet. Can anyone point me in the right direction or tell me which adaptor I should get? thanks Harry

From what I've read, everybody who has used carb adapters has had problems with uneven fuel distribution.
Save your money for holley carb.

I would love to switch but I can't for a little while and I would like to use my boat.. For when I can which holley carb should I go with its a 1989 350 motor with vortec heads and an edelbrock air gap manifold.


ps..I still need to know which adaptor

contact cfm technologies, he goes by CFM on speedwake, he can surely point you in the right direction

I would think a 750 would be enough carb. Watch the classifieds and ebay. a lot of people move up to a bigger Holley on the big blocks that come with a 750.

I thinkEdlebrock makes an adapter. They should be as good as anyone.

A 650cfm should be plenty of carb. Stock is 600cfm.