I haven't tried a 50oz imbalance yet everything has been 28oz. I need to look at the specs from Ford again I believe it said I could use either 28 or 50oz set up.

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Ford Racing 347 Short Block Edelbrock performer RPM Heads Air gap intake MSD 6 AL Ignition Demon 650 carb Crane Cam Hedman Headers 2.5" Flowmaster 40 series 3.55 Gears Aubrun Gear Pro series