Engine RPM at Hiway speed

273 said

Same tire size on both cars ?


with zero slippage should turn 2600 rpms so your old car seems right this one is way off.

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Not sure of the exact tire size on the old car, but I know the tires were comparable to what is on the Duster now. If there is slippage, would it be in the trans or converter? Any way to eliminate one or the other?