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Message: <blockquote data-quote="swampratt" data-source="post: 3797263" data-attributes="member: 15054">[USER=40561]@adamsredlines[/USER]Yes the one on the dyno would cruise easy at 150 street and ran 15 miles at 6500 rpm on highway with3.25 gears and 28.9" tall tire 1:1 final drive and it would go 500 rpm more but just following an all black vette and that was as fast as he was going and I was not in a bigger hurry than he was.Lets play math.336 is a given.336 X MPH X gear ratio divided by tire diameter = RPMNow allow some for converter slippage if you do not have a lock up converter.336 X 160 X 306 divided by 28.5 = 5772 RPMNow your car should have .83 overdrive so 5772 X .83 = 4,790 RPMYea aero and even wheel drag or out of balance driveshaft will kill top end on a vehicle.Had a 78Nova that would run 7600+ rpm but dead head at 6000 in high.It was the puny 2 something inch driveshaft reaching or passing critical RPM.I had a shaft built and fixed that now 7600 rpm in high.370 gear 31" tall tire and I was moving at 7600 rpm.8 psi in those rear Hoosiers and quite scary when I completely backed off the throttle at that speed.Took me less than  a 1/2 second to stab that throttle back to the floor and eliminate the bouncy balleffect.That was the first time I went that fast but not the last it took that Nova 3/4 of a mile to get there.I admire high speed and Respect for high speed needs to be a given.High pucker factor.My Nova was very aerodynamic   and low and had a belly pan to the center crossmember to keep air out from under the hood.It was very light also compared to new cars 2,780 without me in it.Still had a trailer hitch and it got a lot of use.</blockquote>

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