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  • November 25, 2024, 04:46:40 AM

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Author Topic: Ring and pinion question  (Read 3327 times)

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Offline hillbilly

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Ring and pinion question
« on: October 13, 2013, 12:09:25 AM »
Will a D35 ring and pinion fit an eagles rear._Diff. case ? Would 2:76 rear and. 2:72 front gears work

Offline eaglebeek

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Re: Ring and pinion question
« Reply #1 on: October 13, 2013, 12:46:47 PM »
I don't believe a D35 ring & pinion will fit in our D30 axles.

At one time it was customary to use a numerically-smaller ratio in the front axle than that in the rear. For instance, a 4.09 front axle would be matched with a 4.10 rear. The theory was that the front axle would pull just a bit more than the rear would push and increase stability. AMC used identical ratios in both axles without regard to previous thinking.

A 2.72 front and 2.76 rear would perhaps be OK with a part-time transfer case. I would think that's too much difference in our full-time cases with their viscous couplings.

1984 Eagle Wagon, 258, auto, 2.73 gears, daily driver
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"The society which scorns excellence in plumbing as a humble activity and tolerates shoddiness in philosophy because it is an exalted activity will have neither good plumbing nor good philosophy: neither its pipes nor its theories will hold water."--John W. Gardner, in "Excellence: Can We Be Equal and Excellent Too?" (1961)
 
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Offline eaglefreek

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Re: Ring and pinion question
« Reply #2 on: October 13, 2013, 09:27:44 PM »
Yes a D35 ring and pinion will fit the rear of an Eagle's AMC 15. Are you sure it's a 2.76? I can't seem to find any info on Dana 35 2.76 gears.
1986 AMC Eagle Wagon 4.2L/4.0L head, AW4,NP242, Chrysler 8.25" rear.
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Offline eaglebeek

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Re: Ring and pinion question
« Reply #3 on: October 14, 2013, 06:15:24 PM »
Yes a D35 ring and pinion will fit the rear of an Eagle's AMC 15. Are you sure it's a 2.76? I can't seem to find any info on Dana 35 2.76 gears.
OK...I stand corrected. I, too, am interested in the ratio. :eagle:
1984 Eagle Wagon, 258, auto, 2.73 gears, daily driver
1983 Eagle Limited Wagon, parts; sold
2000 Jeep Cherokee, 4.0, auto
2007 Hyundai Accent, radical downsize from minivan, wife's car and she loves it!

"The society which scorns excellence in plumbing as a humble activity and tolerates shoddiness in philosophy because it is an exalted activity will have neither good plumbing nor good philosophy: neither its pipes nor its theories will hold water."--John W. Gardner, in "Excellence: Can We Be Equal and Excellent Too?" (1961)
 
Air-conditioning is so cool!

Offline carnuck

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Re: Ring and pinion question
« Reply #4 on: October 15, 2013, 12:47:44 PM »
I have a pair of 2.72 diffs (currently in my Eagle wagon but about to be swapped before winter so I can 4x4)
AMC/Jeep gauges are for amusement only. Any correlation between them and reality is purely coincidental!

 

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