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GM drives the speed off of the rear wheels, so there is only 10 revs per mile difference in the 2 main tire sizes GM uses for the Camaro. Even the tires on the I4 and V6 has the rev per mile listed at 730.
The ZL1-1LE is listed at 756 rev per mile, so I suspect it has a slightly different calculation used for its speedo calibration.
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2019 Corvette Z06 2LZ A8 - Halltech CAI, AWE non-catted X-pipe, Mamo V2 ported TB 592rwhp, bone stock 566rwhp
2017 Camaro SS 1LE - Procharger D1SC w/ Tial 2" BOV & Race intercooler / ARH full length catless headers / Alky meth injection system - 650rwhp on conservative tune SOLD
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