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  1. C

    Edelbrock 440-6 manifold modifications

    Looking for any intake manifold modification tips or tricks. Getting ready to build my 440. Freshened it up and had it balanced. Got a new set of Trick Flow 240's and a mild custom cam from Dwayne Porter, (if Comp ever gets is shipped out to me.) I'll be using a new Edelbrock manifold, decided...
  3. C

    4150 goes lean in gear

    Hello, I am working with a 4150 style Quick Fuel 680 on an engine with a healthy cam, which I have jetted and tuned. Primary and secondary throttle openings are at a minimum and idles at 900. I didn't need to drill out the butterflies. 4 corner idle screws are 1-1/16 out. All my other A/F...
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