86w/76 engine backfires through carb
just swapped in a 76 350 4 bolt main minus emmissions with-edelbrock cam, carb, and intake; remanufactured crank; holley fuel pump; complete gasket set; starter; flywheel; cap, rotor, plugs,and wires. starts and runs perfect in park. but when driving lack of power and every once in a while it backfires up through the carb. have tried: different carb, dist, checked and rechecked timing.
old engine did the same thing. everything on new engine is new or different part. is their anything not related to the engine that could cause this.
could the brake booster cause this? it's the only thing hooked up from the old setup.
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