[DeTomaso] ZF Limits

[adin at frontier.net]

Some people can break bowling balls.

The Esakoff car has almost enough power (which is WAY toooo effing  
much) and probably isn't driven with durability in mind.

Having just bought a couple of tremec boxes, I've thought alot about  
this . . .

Gearbox longevity depends upon:

available traction - if you are on the salt, or running dried out 30  
year old f60x14 tires   . . .  drive line pieces will last a little  
longer.  If you are running 10.5 slicks and routinely carry the front  
wheels, I'll bet a gear box won't last quite as long.

driving style: A.J. Foyt/Esakoff/Jr. Wilson style will lead to  
failures.  If you "really want to finish" a 24 hour road race you may  
drive a little differently (not to mention preparation)

available power:  if you have a Bryars 514 conversion and do lots of  
"donuts" (see driving style, above) and power shift routinely (again  
the driving style card) then it is PROVEN that a ZF won't last.  IF  
you are driving the typical "gurly-man" smogged Pantera and don't want  
to buy a new ZF (and drive accordingly) the ZF will last a while.

You pays your $ and takes your choices.









Quoting Ken Green <kenn_green at yahoo.com>:

> What about Esakoff (SP?) the ZF killer.  I think he was busting ring  
>  and pinion gears on a regular basis.
>
> I talked to Lloyd at the swap meet and he said that higher ratio   
> ring and pinion gears have bigger pinion gears and are stronger (at   
> least the 3.20s), so I guess not all ZFs are equal.
>
> Ken
>
>
> --- On Thu, 7/31/08, MikeLDrew at aol.com <MikeLDrew at aol.com> wrote:
>
>> From: MikeLDrew at aol.com <MikeLDrew at aol.com>
>> Subject: Re: [DeTomaso] ZF Limits
>> To: wdemelo at cogeco.ca, detomaso at realbig.com
>> Date: Thursday, July 31, 2008, 9:19 AM
>> In a message dated 7/31/08 2 57 59, wdemelo at cogeco.ca
>> writes:
>>
>>
>> > What is the max HP/TRQ a ZF can handle?
>> >
>>
>> Doing what?
>>
>> Ford determined that the ZF wasn't strong enough to be
>> used in the GT40 Mk
>> II, equipped with a 485 hp 427 side-oiler.   That is, it
>> wouldn't survive 24
>> hours of flat-out driving at Le Mans.
>>
>> But in a street car?   You simply can't build a motor
>> strong enough to hurt a
>> ZF in my view.   That is, unless you are deliberately
>> abusive to the thing,
>> i.e. speed-shifting without the clutch, drag-race launches,
>> etc.
>>
>> Mike
>>
>>
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