[Fot] Road America - Best gear ratio?

[Tony Drews]

Mike, when I ran an overdrive, I was running a 4.11 rear end. Without 
it, I run a 3.8 (Ford diff), and have seen 6300 or 6400 at the end of 
the straights, but that's a really hot lap.  I normally peak at 6100 or 
6200.  3.7 would be somewhat better, 3.5 I've not tried but should keep 
you under 6K.

Regards, Tony Drews

On 3/1/2023 9:24 PM, Michael Deweerd via Fot wrote:
> Amici, For the kastner cup Race at Road America what would be the 
> ideal rear end ratio for a TR4?  Last time (2013) it seemed I could 
> have used a lower ratio?
> Would a 3.50 be the better choice over the 4.10 I have in the car now?
> I Redline at 6000 RPM.
> -- 
> /Mike Deweerd/
>
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