[DeTomaso] Final Drive Gear Question

[Jerry R Knotts]

I have what I think to be a stock geared P car.  On the stock geared car 
with 315/35/17  2700 rpm = 70 mph on the gps.  But in this example I am 
using a stock 40 year old tach and a new GPS.

On car number 2 in your example you are doing 3.3 miles per hour per hundred 
rpm so the 6000 rpm would be 198 mph.

jerry
----- Original Message ----- 
From: "michael at michaelshortt.com" <michaelsavga at gmail.com>
To: "DeTomaso Forum" <detomaso at realbig.com>
Sent: Saturday, June 23, 2012 12:11 PM
Subject: [DeTomaso] Final Drive Gear Question


> Here are the facts:
>
> Two Panteras
>
> Both with 335/35/17 rear tire wheel combos.
>
> 1) One believed to have a stock geared ZF Turns 3,000 rpms at a GPS
> measured 70 mph.
>
> 2) The other with a questionable/unknown final drive geared ZF turns 2,100
> rpms at a GPS mrasured 70 mph.
>
> A) does car #1 seem about "right" in relation to all other Panteras?
>
> B) what replacement final drive R&P ratio would account for the 900 rpm
> reduction in engine rpms.
>
> C) If #2 does indeed have a replacement R&P ratio of X, what would the
> theoretical top speed of Car #2 at 6,000 rpms.
>
> Michael Shortt
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