I recently installed a new Edelbrock carb on my 64 chevy truck. It has a 327 engine. I had quite a bit of power from old holley carb but I wanted a carb with an automatic choke and also wanted a carb that looked good. The old holley would burn rubber in first gear but the Edelbrock is vert sluggish. What have I done? Have I hooked the vaccum lines up wrong? Any info would be of help. Thanks

Does that truck have a Mercedes-Benz three pointed star on the hood?

Have a helper floor the gas pedal, verifier that the throttle plate is fully open, wide open throttle, if not adjust the throttle linkage to achieve WOT. The electric choke could be out of adjustment also, on a hot engine making sure the choke plate (top) is fully open. If it’s a 4 barrel also confirm fully open secondary plate. Do you have the right CFM carburetor.

Buy a Mercedes then we will help you fix it!

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Your hunch may be right about the vacuum hose. It may not be advancing properly.

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Thanks for all the good advice. I will try your suggestions and see if possibly one of those will slove the problem. It can't hurt. Thanks again for the quick response.

Just remember: We here for ya' jim!

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The same thing happened to a buddy of mine who hooked up the vac advance line to the wrong port on the new carb. It acually ended up retarding the timing.

Do you know if the cfm of the two carbs are similar?

A 327 should scream. They are really cool, with the short stroke and all.