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  1. Beach Goat

    Fuel economy difference with efi?

    Hey everyone. Has anyone gone from a big-carb big block to one of the plug-and-play efi kits? And did you notice better fuel economy? I specifically have a 580" wedge with a 1000cfm AED carb. My car is in a weird zone, where it's power (725hp) is too low for the 4500 Dominator style holley...
  3. Beach Goat

    How much porting for a 337 on a 580"?

    I have a 580" wedge motor in my 70 Charger, Indy 572-13s, 10.4:1, 268/270@.650 Comp Cam, AED 1000 4150 Holley. It's currently making 590rwhp/545rwtq. It's got a Mopar 337 single plane manifold, and I'm wondering if the motor would respond to having it ported. Would I only need the entrance to...
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