Note that if the trans is in other than a 1:1 gear, you need to multiply the trans ratio X the rear end gear ratio. For example, if the OD gear is 0.8:1, and the rear axle is 3.73:1, the figure for "gear ratio" in the formula above would be 0.8 X 3.73 = 2.98.
i found an online calculator for RPM at given speed, with given gear ratios. with the final drive being 0.73 and a 3.73 rear end gear and a 31" diameter tire, the calculator gave an answer of 2067 rpm @ 70 mph. is this a safe range to run my basically stock 350ci small block chevy? or should i run a higher rpm on the highway to keep from bogging the engine?
Look at it this way---in the '80s, there were thousands of Carprices with 305s, 700R4 transmissions (30 percent overdrive), and gears in the 2.73 or less range that functioned well enough. I wouldn't worry about your setup.
I set up my my A833-my6 just as HEATHEN described....1985 truck bell housing with hydraulic slave cylinder setup...and then used a small 7/8" wilwood master on my firewall, works MINT. The only pain in the ass was the slave had a metric threaded connection for the hydraulic line and the wilwood was standard. had to get a custom hose made up.
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