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Technical 1937 chevy master deluxe rear end swap

Discussion in 'The Hokey Ass Message Board' started by Chevydeluxe619, May 5, 2018.

  1. Chevydeluxe619
    Joined: May 5, 2018
    Posts: 2

    Chevydeluxe619

    Ive got some good info off of here before. So I'm building a 37 master deluxe 4dr. I'm Looking to swap out the rear end to make it open drive. I know the width is 59.5, dose anyone known of a rear end I can use that will adapt to a th350. I know that s10 4x4 is the way to go but are now hard to find and at a reasonable price. I've heard that the ford explorer will work but not sure what year to use, also that a Isuzu rodeo might work. Dose anyone have info or suggestions on this?
     
    chryslerfan55 likes this.
  2. 73RR
    Joined: Jan 29, 2007
    Posts: 7,342

    73RR
    Member

    Look for a Ford Ranger 8.8, 93-09 at 58½" or the Explorer, 92-09 at 59½".
    These will require some driveshaft mods but they are stout axles.
    The 93 and newer Isuzu is 60"

    .
     
  3. ol-nobull
    Joined: Oct 16, 2013
    Posts: 1,655

    ol-nobull
    Member

    Hi. I am just about to finish up doing this change on my 46 Chevy Coupe. I used a 57 Chevy pickup rear end as it has the same bolt pattern for my wheels. This new rear end has a 3.07/1 ratio and should be great as what I mostly want is a hwy driver. BUT a big problem I encountered after the install of rear end and T350 was that even at 65 MPH the ****** was not ever going into stall. Found it had a 2,500 stall converter and I was not coming close to that RPM in high gear. I have another convertor on order & will be here next Tuesday. That should take care of the problem. This 57 truck rear end may have been about 1/2" wider but still had plenty of tire to fender clearance on my coupe. We cut out the center of ****** cross ember and welded in some drop brackets in so the T350 could be changed from the bottom.
    Before the ****** & rear end change I had a 3.55/1 (pickup ratio that replaced the original 4.11) & 3 on the tree. With that I was getting 20 MPG at 65 MPH. My old ****** just was really worn out and I decided to go with the T350. When installed with the 307 & 2500 stall convertor my MPG dropped to 10 MPG at 65 MPH.
    You need to do the math before installing using your tire diameter, rear end ratio, MPH to see what your road RPM will be to match your torque convertor or expect problems. Likely may need around an 1800 to 2000 stall depending on your rear end ratio.
    I will know how all this turns out late next week.
    Good luck, Jimmie
     
    Chevydeluxe619 likes this.
  4. Chevydeluxe619
    Joined: May 5, 2018
    Posts: 2

    Chevydeluxe619

    Thank you that some good info. I do want to keep my original 6 lug wheels, I was told that the mid 80 early 90's Japanese trucks Isuzu and Toyota but have low gear ratios.
     
  5. 73RR
    Joined: Jan 29, 2007
    Posts: 7,342

    73RR
    Member

    The noted Isuzu is a 5-lug axle.
    The older 6-lug pattern may make your search a bit harder although you could use a GenII Dakota/Durango 6-lug with an adapter...but then that adds to the width....

    .
     
  6. stingbean
    Joined: Dec 30, 2007
    Posts: 232

    stingbean
    Member

    tb33anda3rd likes this.
  7. Corn Fed
    Joined: May 16, 2002
    Posts: 3,427

    Corn Fed
    Member

    Im pretty sure lotsa 55 to 57 Chevy rears ended up under 30s Chevys over the years. You might look into those since it will give you a common bolt pattern.
     
  8. David Gersic
    Joined: Feb 15, 2015
    Posts: 2,813

    David Gersic
    Member
    from DeKalb, IL

    There’s a 78 Malibu rear end under my Master Deluxe 2 door sedan.



    Sent from my iPad using The H.A.M.B. mobile app
     
  9. 49-up Chevy and the S10 are all five lug. Would imagine second gen Camaro fits under there too but same problem. I would just put some '51-'54 brakes on the front and go 5 lug all around, but that's me.
     
  10. 38Chevy454
    Joined: Oct 19, 2001
    Posts: 6,787

    38Chevy454
    ALLIANCE MEMBER

    For newer stuff, the Ford 8.8 is probably a good choice. Older more traditional swap are the 55-57 Chevy car, the 67-69 (first gen) Camaro, the 68-74(?) Nova, the Ford Granada 8-inch, the Lincoln Versailles 9-inch with disc brakes (going to be harder to find nowdays, plus a poor emergency brake design). All of these will be 5-lug, and 58.5-59.5 width at wheel mounting surface. Ford will be 5x4.5, GM will be 5x4.75 lug pattern. I personally don't like the newer S-10 or G-body 7.625 10-bolts. They might hold up to mild small blocks, but I would rather have the bigger 8.2/8.5 10-bolts.

    6-lug you need to look at trucks. The Toyota 4x4 are 6-lug, as are some of the other Japanese trucks like the Nissan or Izusu. Just get the driveshaft that has the yoke for the rearend you choose and any driveshaft shop can make the new driveshaft to correct length and yokes.
     
  11. krgdowdall
    Joined: Apr 3, 2015
    Posts: 141

    krgdowdall
    Member
    from Alberta

    To retain the 6 bolt wheels you have, take a look at the Chev Colorado /GMC Canyon rearend.
    I believe the 4X4 and 2 wheel drive are all the same.
     
  12. Jdmcrx
    Joined: Aug 12, 2017
    Posts: 48

    Jdmcrx
    Member

    Curious when you did this swap was the driveshaft in the torque tube solid or a hollow shaft ?
     
  13. Dan Hay
    Joined: Mar 16, 2007
    Posts: 6,454

    Dan Hay
    Member

    My 38 had a 57 Chevy rear end for a while and now it has a Nova 10 bolt.
     
  14. winduptoy
    Joined: Feb 19, 2013
    Posts: 4,153

    winduptoy
    ALLIANCE MEMBER

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