The 65 chrysler new yorkers used 2:76 axle ratio and got good fuel mileage as well as good performance. Fern
----- Original Message -----
From: "eastern sierra Adj Services" <esierraadj@xxxxxxxxx>
To: <L-FORWARDLOOK@xxxxxxxxxxxxx>
Sent: Sunday, January 06, 2008 10:54 PM
Subject: Re: [FWDLK] WHAT IFs????????
Adam, I installed a 2.76:1 open rear end a few months ago, and really
love it.
I find that I can DRIVE my car is 1st gear, up to about 30-35mph, and
2nd is good to who-knows-what?
The owners' manuals said that our cars (with the stock 3.36:1 gears)
could be driven in stop and go traffic by 'leaving' the car in 2nd
gear, with an automatic upshift to 2nd, to avoid the wear-and-tear of
momentarily shifting to 3rd.
2nd gear, with the 2.76, produces probably a higher net-gear ratio, at
50, than 3rd does @ 50 (altho I haven't done the math, and would
appreciate an engine/differential gearing- comparison .
The acceleration in Drive is rather slow (Gary Pavlovich's car probably
has a much lower rear end ratio), BUT: by starting in 1st gear, the car
really hooks-up and moves out quickly all the way to 30+; pushing the
'2' button, produces an immediate shift, with virtually no fall-off, and
haven't had the opportunity to figure out where/when to shift into 3rd
(80+?).
I just haven't had the chance to take a fill-up highway cruise, to check
65-70 MPG, but, I would anticipate 17+ .
The 2.76'ers are relatively common and abundantly inexpensive.
I had been looking for an about 3.0:1 ratio. I called Randy's Ring &
Pinion and learned that the HIGHEST set that they make is 3.55:1 (due to
'everyone' running O.D. trannies.
I, then, couldn't find a 2.93, and so settled for the 2.76 on a trial
basis.
Now I know how/why the IMPs drove so quietly and got good mileage: they
had 2.76 rear ends!
Neil Vedder
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