[FC] FC shift points

[steven at sashimi.org]

Thanks Jim!  Yes, that's the tire size though I don't know the rear axle
ratio.  Still, it's helpful in understanding the range of shift points in
terms of road speed.

- Steve Brown


Original Message:
-----------------
From: James Davis jld at wk.net
Date: Fri, 03 Aug 2007 10:09:12 -0500
To: corvanatics at corvair.org
Subject: Re: [FC] FC shift points


It depends on the tire size and rear axle ratio.  Assuming 205/75/14 
tires and a 3.27 rear axle ratio, that is 2,526 rpm at 60 mph in 
third.  Three speed ratios are 3.50 in first and 1.99 for second for 
the 61-63 trans.  assuming 3,800 rpm max for the 80 hp engine that 
would equate to 90 mph in third, 45.4 in second, and 25.7 in 
first.  If you have a 3.55  rear axle subtract 8% from the figures 
and with a 3.89 subtract 16%.
Jim Davis




At 09:35 PM 8/2/2007, steven at sashimi.org wrote:
>What are the shift points in MPH as marked on an FC 80 MPH speedometer?
>I've got the standard 1962 80 HP with 3 speed but the instrument panel was
>replaced with a 100 MPH speedometer.  I'm new to the vehicle and I'd like
>to know the optimal shift points.  Besides, it's pretty hard to go on
>engine sound without sticking my head out of the window to hear it!
>
>Thanks,
>
>Steve Brown



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