Correct. I seriously doubt that there is enough friction material in fourth gear to withstand the turbo power PLUS aero drag of your 71 Chevelle AND run that load for an extended period of time. My gear calculator has you running a theoretical 158@7000rpm in 1:1. A .75 overdrive will take you to a theoretical 232 mph. Also keep in mind that your driveshaft will be spinning at 10,000 rpm in overdrive.
But I hate racing on theoretical, frictionless racetracks. Ever try writing with a frictionless pencil? Or dancin' with a frictionless woman?
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Steve Chryssos
Ridetech.com
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