General Category > Quadrajet Carb Talk and Tips

adapter plate

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old cars:
Wondering about using an adapter plate on square bore intake manifold , single plane in particular, to mount a quadrajet. Are they effective? Any issues?

77cruiser:
I have a couple one open from Edlebrock & one I modified to a 4 hole from a cheap Ebay adapter. I'm running a Vic Jr. or square bore RPM.

old cars:
I have a 454 with victor junior intake running a 780 holley I would like to change to a modified Quadrajet using an adapter plate if hood clearance allows.

77cruiser:
How much room do you have now? What kind of car? Most adapters are close to an inch thick.

old cars:
1975 Monte Carlo 454, 9.5:1 compression 500 hp (balanced and blueprinted, self built ) turbo 400, 2000 stall, 2.73 gears for touring. I have 1/2 inch clearance now with 14x3 GM drop base air cleaner. Adapter plates are generally 3/4 inch thick so I would have to use a shorter air filter ( not the best scenario).

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