You might want to use the calculator at this link:
http://www.corral.net/tech/gearcalc.html
I am not sure that moving from a 3.07 to 2.88 will make a huge difference. I
was running a 3.54 in my Mark II and did change back to the original 2.88 to
reduce revs at highways speeds. That made a big difference. But going from
3.07 to 2.88 isn't a "huge" move, so you may not enjoy as much benefit as
you'd like.
For what it's worth, JCR Offroad in Kalamazoo, MI swapped my 3.54 back to the
original 2.88. I had moved to a posi when I put in the 3.54, so they had to
drill out the carrier to accomodate the larger 2.88 open rear end carrier
bolts. With all that, total cost was only $225 and it runs great (very minor
whine on deceleration at certain speeds, but not worth messing with it again
IMO).
Bill Waite
Grand Rapids, MI
--- On Thu, 9/11/08, Dave Munroe <dave@munroe.ca> wrote:
From: Dave Munroe <dave@munroe.ca>
Subject: Re: [Tigers] Rear End Gears
To: tigers@autox.team.net
Date: Thursday, September 11, 2008, 2:30 PM
Hey guys:
Another path to pursue to make my Tiger more user-friendly:
My car came to me fitted with 3:07 gears in the rear end. It turns about
3,000 rpm at 60 mph.
Thinking a set of original 2:88's would bring the engine revs down to make
the car more relaxed to drive at highway speeds,
including less noise, vibration, and even perhaps improved fuel economy, I
picked up a set off eBay. Unfortunately, my local
Jeep guy who has a LOT of experience with Dana 44's is reluctant to put
them in my car.
He says often eBay rear-end gears will not take a pattern and it is a huge
expensive hassle to remove a good set of gears, replace them with
used ones of questionable lineage, find out they are "bad", and have
to do
it all over again just to get back to ground zero. He quoted me
approximately
8 hours labour for one "cycle". (old gears out: new gears in).
The ones I have purchased look excellent, very little wear, (only a shiny
spot where the teeth were in contact, a "good" pattern) an came
complete
with
the spider gears and cage.
Does anyone have any experience or advice on this change back to original?
Thanks,
Dave
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