lowering 60 foot time

I would use the vacume secondary carb as they will leave harder than a dbl pumper, try a shorter tire, we have a 360 that uses similar setup and runs 1.55-1.57 60ft times with 26" tires and a 3.91 gear 750 vac. carb with some minor mods. The car weighs in at 3510 lbs. The worst 60 ft we've had is 1.68 and this was spinning.

BJR Racing