<VV> Normal RPM Range on Freeway

Harry Yarnell Harry Yarnell" <hyarnell1@earthlink.net
Wed, 28 Jul 2004 14:05:42 -0400


It is my understanding, that with a 3.55 rear and 13" tires, your speed is
double the tach reading, taking off the two zeros. So a reading of 3500 on
the tach, would translate to 70mph.

One of your instruments is off  ;).

Harry Yarnell
perryman garage and orphanage
perryman, MD
hyarnell1@earthlink.net

----- Original Message ----- 
From: "Derek Archer" <eggman@owt.com>
To: <virtualvairs@corvair.org>
Sent: Wednesday, July 28, 2004 1:53 PM
Subject: <VV> Normal RPM Range on Freeway


> On my '64 spyder, when going 70 MPH in 4th gear with the spyder
> standard 3.55:1 diff, my tachometer reads around 4000 RPM! I think this
> is a bit high, but then again, the tach may be slightly off. Normal or
> not?
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