[DeTomaso] Final Drive Gear Question
SG
sdlgibson at sbcglobal.net
Sun Jun 24 11:18:18 EDT 2012
I've been checking into a higher 5th gear to ease highway cruise rpm, and was contemplating doing it myself, but one of the vendors told me that there is some machining involved on some of the other parts to let the new gearset fit. Anyone know if there is necessary machining, or if the gears can just be "swapped" out?
Shaun Gibson
--- On Sat, 6/23/12, MikeLDrew at aol.com <MikeLDrew at aol.com> wrote:
From: MikeLDrew at aol.com <MikeLDrew at aol.com>
Subject: Re: [DeTomaso] Final Drive Gear Question
To: michaelsavga at gmail.com, jb841 at cox.net
Cc: detomaso at realbig.com
Date: Saturday, June 23, 2012, 11:20 PM
In a message dated 6/23/12 21 11 41, michaelsavga at gmail.com writes:
> So what is the value of a 3.78 R & P?
>
>>>Cost? Or value?
> >In $ to acquire and install one?
>
>>>Figure about $2500 for the ring and pinion; requires professional
installation that goes along with a ZF overhaul, so figure at least another $2000
for that, and probably more.
> >Gas Mileage?
> Top Speed?
> Other Benefit?
>
>>>Both of those. The ideal combination might be the stock 4.22 ratio
with a taller fifth gear, which preserves accleration in the lower gears and
has the added advantage of being substantially less expensive than a 3.77 R&P.
I'm happy with the stock gearing, because cruising on the freeway at
3000-3500 rpm ensures my engine is 'on the cam'. People can make the mistake
of overgearing the car, and running below the torque envelope, where the
engine is soggy and inefficient. But if you have a cam that is biased towards
the bottom end, taller gearing can be more beneficial.
Mike
_______________________________________________
Detomaso Forum Managed by POCA
Archive Search Engine Now Available at http://www.realbig.com/detomaso/
DeTomaso mailing list
DeTomaso at list.realbig.com
http://list.realbig.com/mailman/listinfo/detomaso
More information about the DeTomaso
mailing list