Author Topic: 2.94 to 4.10 gears  (Read 502 times)

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Offline khintz21

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2.94 to 4.10 gears
« on: May 12, 2020, 11:32:58 am »
Ok so Iíve already taken off the rear diff cover and discovered that I do indeed have 2.94 gears in my 81 w150.   Odd I know but I guess it was an option on some 318 pickups. Anyway i currently have a 400 out of a 76 and a 727/208 with manual lockout Dana 44 front and Chrysler 9.25 rear.  I have been looking into axle swaps and havenít been having any luck finding something that works for me and wanting to keep my part time setup.  That being said, what will all go into swapping in 4.10 into my current axles and about how much can I expect to spend?  Will I need new carriers in both axles with this big of a gear change?  Will it even work at all?
81 w150 club cab short box 4x4
400/727/d44/9.25
74 w100 power Wagon single cab long box 4x4
360/np435/d44/8.75

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    Offline Elwenil

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    Re: 2.94 to 4.10 gears
    « Reply #1 on: May 12, 2020, 01:16:37 pm »
    I would definitely double check those gears. While it is possible, I thought they were only in the 8 1/4" rear, and 2WD only. I can't look it up to be 100% positive here at work since Mopar only goes back to 1984.  Ironically, I have more catalogs than the dealership, lol. But yeah, I would be very surprised to see that gear in a D44.
    L.Clemons

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    Re: 2.94 to 4.10 gears
    « Reply #2 on: May 12, 2020, 01:36:15 pm »
    I do not have an 91 parts manual, but the 82 does list 2.94 as available for the D44 front axle, And both 1/2 ton rear axles. As they say, you learn something new every day.
    77 W200, 360/727/NP203/D44HD/D60 (Wifes Toy)
    77 M887- 318/727/NP203 D44HD/D60
    78/86 Ramcharger.  360/727/NP203 D44/9&1/4
    85/89/90 D150/W250 5.9TBI/435/241 D44HD/D60HD
    85 W350 360/727/241 D44HD/D60
    97 B3500 5.9MPFI/518 D60HD
    20 Pacifica Hybrid, 3.6 V6, EVT 1 speed trans.
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    85 Country Coach RV, 5.9 Cummins/TH475,GV od,US gear Exhaust brake,D70HD (4 wheel disk brakes, 10 lug 19.5 rims.

    Offline Elwenil

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    Re: 2.94 to 4.10 gears
    « Reply #3 on: May 12, 2020, 02:20:54 pm »
    Weird. I guess new differential carriers is pretty much a necessity.
    L.Clemons

    1988 Ramcharger AW450-318EFI-NP435 4 speed-NP205 Transfer Case-Dana 60s-Braden Wormdrive Front Winch

    2018 Ram 2500HD Crew Cab 4WD 5.7L

    I am the unknown Will,
    The Anger that threatens glory and ruin:
    Lord of Storms am I,
    in heaven high and caverns deep.
    I am the Father of the War,
    Odin for you, Wotan for him,
    Wayfarer, Wanderer, beggar, king,
    numen, genius, strength and ring.

    Offline khintz21

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    Re: 2.94 to 4.10 gears
    « Reply #4 on: May 12, 2020, 02:46:04 pm »
    I pulled covers and found the ratio stamped on both front and rear sets.   Was told it was 3.55 when I bought the pickup and took his word for it.  Turns out that was not a good decision so now itís time to find new axles or swap gears
    81 w150 club cab short box 4x4
    400/727/d44/9.25
    74 w100 power Wagon single cab long box 4x4
    360/np435/d44/8.75

    Offline RedneckInTraining

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    Re: 2.94 to 4.10 gears
    « Reply #5 on: May 14, 2020, 04:24:55 am »
    What is your end use for the truck?4.10's will be buzzy on the highway with no overdrive.
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    Re: 2.94 to 4.10 gears
    « Reply #6 on: May 19, 2020, 07:43:57 pm »
    All my trucks are 4.1, and no overdrive. Almost every truck I had was 4.1. Never considered any as bad on the highway.
    My van is 4.1 with overdrive. I drove it for several years, including from Pa, without the overdrive working, Can't say I notice much difference.
    I would not consider 4.10 a problem at all on the highway.
    « Last Edit: May 19, 2020, 07:46:39 pm by SuperBurban »
    77 W200, 360/727/NP203/D44HD/D60 (Wifes Toy)
    77 M887- 318/727/NP203 D44HD/D60
    78/86 Ramcharger.  360/727/NP203 D44/9&1/4
    85/89/90 D150/W250 5.9TBI/435/241 D44HD/D60HD
    85 W350 360/727/241 D44HD/D60
    97 B3500 5.9MPFI/518 D60HD
    20 Pacifica Hybrid, 3.6 V6, EVT 1 speed trans.
    projects:
    85 Country Coach RV, 5.9 Cummins/TH475,GV od,US gear Exhaust brake,D70HD (4 wheel disk brakes, 10 lug 19.5 rims.

    Offline subwoofer88

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    Re: 2.94 to 4.10 gears
    « Reply #7 on: May 21, 2020, 11:51:19 am »
    My 73' W200 has 4.10 gears and does just fine on the freeway. Going 75 you can expect around 3500 RPMs with no overdrive. I drove from Los Angeles to Cincinnati, and it rode just fine. Interesting to learn there was such a short gearing in these trucks. Swapping differentials isn't too hard, but it is some work to get it right. I would go onto Summit Racing and see what's available for those axles. Also need a different speedometer gear off the T-case for the new gear ratio.
    "Fury" 1973 W200 Camper-7500, 360LA, NP435+NP203 (with part time conversion), 44HD front - 60 rear
    "Puff" 1973 D200 Club Cab, 400B, A727, Dana 60
    "Mule" 1993 D150, 318 Magnum, A518 (Roommates, but I'm the one who fixes it)

     

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