gearzone.net- autodyne RPM calculator.
If you input the stock gear ratio (4.11 I believe) and 5th gear ratio (you need to look this up) and input tire size, it will give you speed at desired RPM.
Or, take speed at 3750 in 5th and multiply by two, assuming stock speedo is calibrated and the car has the hp to top out 5th and has the stock rev limiter.
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Orig Owner, 73K, Ram Air, K&N's, MAS Mods, 1.25" Cold Air MAS Bypass, Ported Big 16G, Propane Injection, Custom 2.5" LICP, SMIC with 2.25" in/out, Brode 2.5" UICP and Elbow, 2.5" Mandrel Side Exit Exhaust, CFDF, 190 LPH Rewired , Autometer A/F and 30-0-30 Boost Gauge, Pocketlogger, Eibach, KYB, Rear ASB and Strut Bar, 225 Yoko AVS, 16x7's, ~2582 lbs, 3A40BC Fire Extinguisher.
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