[DeTomaso] Taller 5th gear for cruise

Julian Kift julian_kift at hotmail.com
Thu Jun 17 17:27:45 EDT 2010


Yeah, I thought the 3.77 R&P is something like $3900 now. My tall 5th cost $1500 installed.

 

Julian
 
> From: wdemelo at cogeco.ca
> To: daniel.c.jones2 at gmail.com; detomaso at realbig.com
> Date: Thu, 17 Jun 2010 17:12:51 -0400
> Subject: Re: [DeTomaso] Taller 5th gear for cruise
> 
> I'm looking at an RBT receipt from 2001 and the 3.77 R&P was $2500 and the 
> 5th gear was $1275
> Will
> ----- Original Message ----- 
> From: "Daniel C Jones" <daniel.c.jones2 at gmail.com>
> To: "Pantera REALBIG forum" <detomaso at realbig.com>
> Sent: Thursday, June 17, 2010 5:02 PM
> Subject: Re: [DeTomaso] Taller 5th gear for cruise
> 
> 
> >> Have you tried Lloyd's Gear Ratio Calculator on line:
> >> http://www.rbttrans.com/Gear%20Ratio/page1.php
> >
> > No, I wrote my own.
> >
> >> The only one he could source at the time was a 0.642
> >
> > Good point, I'm making the assumption that all ratios are
> > now in stock. I'll have to find out if that is true.
> >
> >> It sounds like you already know what you want. :-)
> >> The .620 is probably just what you need for cruising.
> >
> > Yup :-)
> >
> >> I guess I need more HP.
> >
> > We can fix that...
> >
> >> Dan, Larry Stock had RBT build up a ZF with a 3.20:1 R & P in a
> >> 400bhp/400-ft-lb Cleveland, and after losing three Centerforce
> >> clutches due to severe clutch slipping needed to just get going,
> >> he pulled it and went to a 3.77:1 R & P. What is the concensus on
> >> R & P changes relative to only the 5th gear pair? I notice the
> >> costs are similar- around $2000.
> >
> > I'll be running quite a lot of cam overlap plus an aluminum
> > flywheel, so I thought I'd just do the taller 5th gear. The
> > taller ring and pinions were more expensive and would raise
> > first gear which might hurt clutch life.
> >
> > Dan Jones
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