[Rovernet] P6B final gearing

[magnet at ican.net]

I too would urge caution in fitting a 2000 final drive to a 3500.  My 
P6B had a 2000 final drive when I got it.  I didn't know this at the 
time, but after the final drive failed (stripped spider gear) I realised 
it was a 3.54, not a 3.08 and hence not the original equipment.  The car 
had always seemed under-geared and that explained it.

I suspect the torque capacity of a 2000 unit might be a bit marginal for 
the V8.

YMMV (in fact, it probably will!)

Cheers,

  -- Bill D.


On 02-Mar-15 6:39 PM, Scruggs Family via Rovernet wrote:
> Hi all/Kent,
>
> I know of maybe two instances where someone put a 2000 diff in a 3500 and
> both times they succumbed to the extra torque and left a trail of gear parts
> on the tarmac.  The stiffening ridges on the side of the 3500 diff are not
> just for looks.  I have an email friend who is a policeman on the north end
> of New Zealand's North Island that has a significantly modified 3500...
> Toyota 5-spd, Holly 4-bbl, better cam, larger front sway bar, relocated fuel
> tank... and he was interested in a more favorable ratio for his club track
> events.  We chatted for a few weeks and he finally installed the gears from
> a 2000, 3.54 I think it was, into the 3500's stiffer case.  I don't recall
> what he had to do but seem to recall he made some sort of spacer such that
> the gears were correctly aligned.  When we last corresponded the new diff
> was still in service and operating quite well.  I'm not certain how one
> would adjust the speedometer to account for the difference in ratio.
>
> I went the other way... my '67 2000TC has a 3500 diff with the 3.08 ratio.
> Yes, it's slow in first gear but third is endless and top speed is not just
> "106 mph."
>
> Gross Scruggs
> Annapolis, MD
>
>
> -----Original Message-----
> From: Rovernet [mailto:rovernet-bounces at rovernet.org] On Behalf Of Kent
> Kinard via Rovernet
> Sent: Monday, March 2, 2015 6:15 PM
> To: Rovernet
> Subject: [Rovernet] P6B final gearing
>
> Hi Netters,
> Jonathan Present, who is on the list, is building up a P6B.  He lives in
> San Francisco and does mostly city driving.  He would like to explore
> the possibility of using 3.45:1 gears in the diff.  I know the 2200 rear
> ends have the requisite gears and are like the V8s, but there are
> virtually no 2200's in North America and certainly none being parted
> out.  What about using a Series 1 2000 diff?  What are the actual
> differences?  Opinions? Problems?  Should he just get one sent from the
> UK?  I think I just exceeded my area of expertise.
> Roveringandpinionly,
> Kent K.
>
> _______________________________________________
> Rovernet mailing list
> Rovernet at rovernet.org
> http://rovernet.org/mailman/listinfo/rovernet_rovernet.org
>
>
> _______________________________________________
> Rovernet mailing list
> Rovernet at rovernet.org
> http://rovernet.org/mailman/listinfo/rovernet_rovernet.org
>
>