Thread: Positive Traction?
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Old 03-15-2007, 12:16 PM
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Cobra Make, Engine: Lonestar LS427, Keith Craft 496 Genesis, 649 hp, 668 ft-lb, TKO-600, Dynatek Stack EFI
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This a quote from the service manual for the TrueTrac from the link posted above.

Final Inspection:
"To verify the TrueTrac differential is properly installed, restrict the rotation of the pinion shaft (by placing the gear shiift lever in park for automatic transmissions, or in reverse for manual transmissions) and raise the axle so both wheels are off the ground. When one wheel is turned by hand, the other wheel should rotate freely in the opposite direction. Check in both directions."

I agree that posi's with clutches will not rotate or has resistance if only one wheel is raised, or will rotate in the same direction if both are off the ground, but not all posi/LS units react that way and it can only be determined by dissassembly or peformance characteristics.

Brad W.
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