Re: Interesting point (archive)

according to C&D, the top speed was reached in 5th gear at redline. With the Z06's final drive ratio, I would bet even money (again I don't own one) that the top speed in 6th is lower than in 5th (C&D backs me up) (155 vs 168mph)

Since the torque put to the road at 155 in 6th is (roughly 360ft-lbs at the engine) * 0.56*3.42=689ft-lbs vs the 808ft-lbs in 5th @ ~6500rpm. Using a square relationship of drag with speed, such a torque difference equates to (assuming that 5th gear gets you 168mph) a top speed in 6th gear of 154.8mph or DAMN close to C&D's number of 155.

Basically I think the top speed of the Z06 is ~170-172 in 5th gear, the C5 maybe 1-3mph more. Weather conditions and etc and change this by a few mph thus giving the range of mag. figures of 168-175 for the Z06, and speedo error, weather, or luck, accounts for anyone that has run 180 in a stock Z06

-m

Since the gearing on the regular C5 is taller than the Z06 the top speed of the C5 may be fractionally higher than the Z06.
-m

The top speed of a Z06 is achieved in 6th gear before redline, so the shorter final drive ratio is NOT the limit here. The top speed of a Z06, as mentioned in an earlier post, should be ~6 MPH higher than that of a C5.

Follow Ups:

Re: Interesting point JoeB 02:27 12/27/2000 (0)
Re: Interesting point AutobahnC5 13:59 12/26/2000 (0)

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