<VV> DIFFERENTIAL RATIO COMMENTS

[John Howell]

John,

Sometimes we try to get too technical with the terms we use here, this 
is just a fun hobby.  When you look at the books on the Corvair  the 
whole case and everything inside it is referred  to as the Differential .
The charts listing the ratios say 'Differential Ratios' , nowhere have I 
seen 'final drive' listed in the the GM manual or other books.   We are 
just car guys here, as long as everyone knows what we are talking about
that is all that matters, we know that within the Differential Carrier 
Case ( known to car guys as the Differential ) there are gears that 
determine the differential ratio.  Sometimes it is confusing enough, 
lets not
make it any worse.

John Howell





On 1/29/2012 1:58 PM, jvhroberts at aol.com wrote:
> The final drive is the ring and pinion. The differential is considered 
> a different piece of it. The axle differential in every car I've run 
> across is 1:1. Some AWD cars have ratios other than that in their 
> center differential.
>
> When one speaks of final drive ratio, they're talking about ring gear 
> teeth/pinion gear teeth. Although some talk about it as a 
> differential, that's not the correct term. That is the piece with the 
> spider gears.
>
> John Roberts
>
>
> -----Original Message-----
> From: John Howell <32chevy at 0306.org>
> To: jvhroberts <jvhroberts at aol.com>
> Sent: Sun, Jan 29, 2012 1:23 pm
> Subject: Re: Re: <VV> DIFFERENTIAL RATIO COMMENTS
>
> John,
>
> Where is the 'final drive' if it is not a part of the differential ?
>
> John Howell
>
>
>
>
> On 2:59 PM,jvhroberts at aol.com  <mailto:jvhroberts at aol.com>  wrote:
> >    Technically, the differential is 1:1. The final drive, however, is what
> you're talking about.
> >
> >  Had an FC once. 3.55 is the way to go here. 3.89 would be better.
> >
> >
> >
> >  John Roberts
> >
> >
> >
> >
> >  -----Original Message-----
> >  From: N2VZD<N2VZD at aol.com  <mailto:N2VZD at aol.com>>
> >  To: virtualvairs<virtualvairs at corvair.org  <mailto:virtualvairs at corvair.org>>
> >  Sent: Sun, Jan 29, 2012 7:28 am
> >  Subject: Re:<VV>   DIFFERENTIAL RATIO COMMENTS
> >
> >
> >  I am now not sure if I want a 3:55  or a 3:27 in my rampy. I have a  3:27
> >  in it now running ok with a 95hp powerglide. I just parted out a 64 FC WB
> >  110hp with powerglide and 3:55. I am building a new motor from scratch for it
> >  ,  using the correct 64 FC powerglide . Now I am thinking maybe I might like
> >  the  3:55 better on hills etc, without THAT  much difference in fuel
> >  economy..??  I plan on driving it quite a bit in good weather on all kinds  of
> >  roads.  Has anyone used both , and can comment on this?  I have the  3:27 in
> >  it for a while now  for thruway cruising and fuel mileage , but raw  hills
> >  south of here are a slight challenge.
> >  Yes I will be resealing and checking the 3:55 out carefully.
> >  Regards , Tim Colson   "still playing with Corvairs"
> >
> >
> >    _______________________________________________
> >  This message was sent by the VirtualVairs mailing list, all copyrights are the
> >  property
> >  of the writer, please attribute properly. For help,mailto:vv-help at corvair.org  <mailto:vv-help at corvair.org?>
> >  This list sponsored by the Corvair Society of America,http://www.corvair.org/
> >  Post messages to:VirtualVairs at corvair.org  <mailto:VirtualVairs at corvair.org>
> >  Change your options:http://www.vv.corvair.org/mailman/options/virtualvairs
> >    _______________________________________________
> >
> >
> >
>