Register now to get rid of these ads!

Chevy 3600 into a daily driver

Discussion in 'The Hokey Ass Message Board' started by Coach529, Sep 19, 2012.

  1. Coach529
    Joined: Sep 6, 2012
    Posts: 437

    Coach529
    Member

    Project low and slow as my son calls it.

    [​IMG] [​IMG]

    1949 Chevy 3600 that was last registered in 1974. Been in my family since almost new as far as I can piece the stories together. Been sitting in the barn for 30 years, but it was driven into it when they parked it.

    Being a 3/4 ton is the biggest challenge, mainly with the lack of availability of taller rear gearing. 4.56 gearing will not work for me. I would like to cruise at 60-70 on the highways. So changing the rear and is a must.

    I do have access to a 61 GMC 1000 parts truck. Does anybody know if that rearend is the same track width as my stocker? I have no idea what the gearing in it is. Not even sure what was available that year. What other common vehicle rear ends would I use?

    The front I am looking a donor 1/2 ton axle and brake set up to take care of the front change over.

    Eventually I will lower it and install a brake upgrade and power steering.

    Any advice from someone who has done this transformation?
     
  2. Curt B
    Joined: Oct 15, 2009
    Posts: 325

    Curt B
    Member

  3. Coach529
    Joined: Sep 6, 2012
    Posts: 437

    Coach529
    Member

    I have read a bunch on there......but have a tough time getting people to answer posts. I will try to be more patient.
     
  4. Coach529
    Joined: Sep 6, 2012
    Posts: 437

    Coach529
    Member

    Nice truck BTW!!
     

  5. What engine/trans will you be using?

    A Toyota 4Runner rear should fit and will give you highway gears (and a matching 6 lug pattern), but I wouldn't recommend it if you want to make alot of HP/torque.
     
  6. Coach529
    Joined: Sep 6, 2012
    Posts: 437

    Coach529
    Member

    To start the 216 and the stock 4 speed. Maybe a 235 and a T5 sometime in the near future.

    No huge HP in the future.
     
  7. squirrel
    Joined: Sep 23, 2004
    Posts: 50,964

    squirrel
    Member

    61 rear would also be 4.57

    They used that rear in Chevy trucks thru 1972, and 4.57 is what you'll find mostly...with the occasional 5.14 thrown in for good measure.

    I have a 33 57 chevy one ton (3800) that I shortened to the same length as a 3.4 ton, and put in an 80s suburban 8 lug 14 bolt rearend, with 3.73 gears. With the tall 235/85R16 tires, it goes down the road ok at 70. I did add a big block in front of the granny gear transmission, though.

    Stock front brakes and suspension. And it sits pretty high.
     
    jeffd1988 likes this.
  8. Coach529
    Joined: Sep 6, 2012
    Posts: 437

    Coach529
    Member

    I am just guessing, but I doubt that 1/2 ton GMC has a 4.56 gearing.
     
  9. squirrel
    Joined: Sep 23, 2004
    Posts: 50,964

    squirrel
    Member

    oops! you did say 1000 didn't you....

    Do you want turn your truck into a half ton truck?
     
  10. Coach529
    Joined: Sep 6, 2012
    Posts: 437

    Coach529
    Member

    Yea. Upgraded brakes are only available for 1/2 tons and I really do not need the 3/4 hauling capability.

    If I had been given a choise I would have prefered a 1/2 ton, but this is what my dad gave me. It has been in the family to long to part with.
     
  11. squirrel
    Joined: Sep 23, 2004
    Posts: 50,964

    squirrel
    Member

    Has it been in the family too long to cut it up?

    Beware that the 3/4 ton frame is quite a bit different than the half ton frame....i'ts like 10 inches narrower in the back.
     
  12. Mr48chev
    Joined: Dec 28, 2007
    Posts: 30,868

    Mr48chev
    ALLIANCE MEMBER

    Sometimes that straighter frame makes mods a lot easier than on the half tons with the frames that spread out.
    Coach 529 I put a 56 Chev Half ton rear axle under my friend's 53 and it works great. the truck also got the 56 235 and three speed at the same time. They put a custom built camper on it and went on a 10K road trip with it. I'm not sure what the rear end's gear ratio is.
    I'd look into the Toyota rear ends though if you aren't going wild on power. one of those might be easier to find with highway gears and in good shape.
     
  13. 55Hydramatic
    Joined: Apr 24, 2011
    Posts: 459

    55Hydramatic
    Member

    Nice truck, thing looks straight! Those AD's have some nice lines.
     
  14. Coach529
    Joined: Sep 6, 2012
    Posts: 437

    Coach529
    Member

    There really should not be much cutting unless I notch the frame for clearance.

    I have heard the frames are different, but it should not be a big deal.
     
  15. Coach529
    Joined: Sep 6, 2012
    Posts: 437

    Coach529
    Member

    Thanks. I am going to verify the track with on the Toyota and see if I can find one.
     
  16. squirrel
    Joined: Sep 23, 2004
    Posts: 50,964

    squirrel
    Member

    Look at that 61 gmc rearend, it might be a Dana 44 or Dana 60, and it might be 3.54 ratio. It will be 6 lug, and the correct width.

    What are your plans for the front of the truck?

    You said something about "low and slow" in your first post...can you elaborate?
     
  17. Coach529
    Joined: Sep 6, 2012
    Posts: 437

    Coach529
    Member

    Awesome....I will look into that rear on the 61.

    The front is going to get a 1/2 ton drop axle from Sid with 1/2 ton brakes.

    The plan is to drop it 4-6".
     
  18. squirrel
    Joined: Sep 23, 2004
    Posts: 50,964

    squirrel
    Member

    Are you going to find some different springs for the rear?

    Are you going to leave it a long bed?
     
  19. Coach529
    Joined: Sep 6, 2012
    Posts: 437

    Coach529
    Member

    Either pull some springs out of the pack or buy a monoleaf for the rear.

    Yes, I am plannin on leaving it a long bed at this time.

    [​IMG]
     
  20. Razorshotrods
    Joined: Jul 28, 2008
    Posts: 346

    Razorshotrods
    Member
    from Phoenix

    just drive it as is and look for a 1/2 ton to mess with. If its been i n your family i wouldnt touch it.
     
  21. Coach529
    Joined: Sep 6, 2012
    Posts: 437

    Coach529
    Member

    That would almost be easier........but if I leave it stock it will likely never get used, except for an occasional parade, if even then.

    I am going to keep all the stock stuff and everything I am going to do is reversible incase at some point I want to return it to stock.
     
  22. Does the 3/4 ton have an open driveline?
     
  23. Coach529
    Joined: Sep 6, 2012
    Posts: 437

    Coach529
    Member

    Yes, at least I believe so.
     
  24. JunkYardGuy
    Joined: Sep 6, 2009
    Posts: 82

    JunkYardGuy
    Member

    Keep in mind the 3600 series have 8 lug wheels.
     
  25. Coach529
    Joined: Sep 6, 2012
    Posts: 437

    Coach529
    Member

    Found this snippit of info over at Stovebolt:

    Turns out that a 1955 through 1962 1/2-ton units will all fit. Three ratios were available through those years:
    • 4.11 with an overdrive transmission
    • 3.90 with a standard transmission
    • 3.38 with an automatic transmission.
    The donor truck I am pulling from has a standard tansmission so it will be 3.90. Perfect.
     

  26. Actually its both, they use the closed style to the carrier bearing then open from there. Had it on my 3/4 ton.
     
  27. Coach529
    Joined: Sep 6, 2012
    Posts: 437

    Coach529
    Member

    Were the 1/2 ton is closed from the differential forward correct?

    So I do not need to worry about that until I do a tranny swap.
     
  28. Might get away with the stock drive-shaft till you do the trans swap, a bit of juggling with the U-joint might be necessary. If it were me, I'd go ahead and go to 5-lug on the rear because the disc kit is most cheaply available as 5-lug.
     
  29. Coach529
    Joined: Sep 6, 2012
    Posts: 437

    Coach529
    Member

    I will give that some though Unclee, even though I pretty much have everything lined up to go the 6 bolt route.
     
  30. squirrel
    Joined: Sep 23, 2004
    Posts: 50,964

    squirrel
    Member

    Why? If you get all the original stuff working, it will be like every truck was in the 1950s....and they did get driven all over the place, and worked hard every day. You just have to switch your mind into that mentality, and you can drive it as much as you want.
     

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.