Before you lose the 3.55 gears, make sure your carb is properly tuned to operate as efficiently as possible. Also, look into recurving your distributor. I have mine set up for 22 degrees mechanical in the distributor all in by 2,800. I also went to the adjustable vacuum. "Suntuned" on the classical pontiac board set up my distributor. Cliff R. is real good with quadrajets. Making sure these are dialed in can enhance performance and mileage.
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1968 Firebird 400HO convertible
1971 Trans Am 4-speed, white/blue
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