[DeTomaso] Wanted, 71 or 72, Which To Buy?

[Tomas Gunnarsson]

As both -1 and -2 trans cases can be bolted to our cars with one center or two side mounted mounts using the same parts (AFAIK) I doubt that the overall dimensions of the cases are very different. As you've said before that the internals can be swapped between cases I doubt that the overall lenght can vary much. If anyone has measurements from a -2 input shaft I can compare it to my old -1 shaft.

Tomas

----- Original Message ----- 
From: <JDeRyke at aol.com>
To: <detomaso at realbig.com>
Sent: Friday, August 01, 2008 3:59 AM
Subject: Re: [DeTomaso] Wanted, 71 or 72, Which To Buy?


> .... and finally, the dash-1 transaxle CASE is 4 lbs lighter than the dash-2 
> case. The box is physically smaller and is missing the two internal allen 
> bolts supporting the box to the belllhousing. The circular part that bolts to the 
> bellhousing is smaller in diameter and only fits the sand-cast early 
> bellhousing that has two vent holes. The clutch release cross-shaft is smaller and 
> shorter and the iron throwout fork itself is smaller. So unless you have the 
> entire assembly, its difficult to mix and match ZF types.
> 
> FWIW, the early aluminum side plates will crack the ear extensions if they 
> are bolted to the early bellhousing pads and the side-bolts loosen up. In our 
> assembly, I don't install the side bolts. The real failure mode for the alloy 
> sideplates was, under high horsepower and long events such as Sebring or LeMans, 
> the aluminum expanded with high heat , slacking off the differential bearing 
> pre-loads and failing the bearings. Factory racers often ran diff-coolers. Our 
> current power level is well below the factory racers, I don't plan to run 
> LeMans any time soon, and I have a temp probe in the ZF that only shows 180 
> degrees on 6-hr runs, so we'll see how long the OEM bearings last.... FWIW- J 
> DeRyke
> 
> 
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