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Re: 38'' Big daddies
65MPH=2200RPM with 3.73 gears. 4.10's would bring you to 2400RPM. I would consider 4.33's if I was to change gears.That is 2550RPM. All of this not counting a non-lockup transmission... But, I'd be inclined to ditch the balloons for something smaller if it was my street truck.
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'81 K10 454/SM465
'86 S10 Blazer
'95 H-D Softail
'96 Integra
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