[Mike Rietow]

Torque converter like the other man said. I have a 23* sbc 3.875 stroke crank with a set of cylinder heads that flow 326 @0.700lift. 3250 pd car goes 1.27 60ft N/A with a 8.94 starting line ratio on a 28 x 10.5 bias M/T. Your starting line ratio is 10.05. if your'e optimum shift is at 7600rpm the observed stall should be around 6200 with a 3sp transmission, maybe a cats whisker more. I wouldnt change the gear without a converter adjustment. No way, it won't go down consistently.