What size carburetor should I get for a 1967-68 delta 88 425?

Asked by Aug 22, 2012 at 12:57 AM about the 1971 Oldsmobile Cutlass Supreme

Question type: Maintenance & Repair

I own a 1971 Cutlass Supreme and it has a 425 in it out of a '67 or '68 delta 88. I want to replace the carburetor in it
but, want to find out what size will get the best results?

1 Answer


A 750 cfm should work good. Not an expert but i had a 650 edelbrock on my 350, a 425 should be able to handle a bit more

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