1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

1974 2wd crew to 4x4.

Discussion in '2wd Pick-Ups C/R 20 2500 C/R 30 3500' started by climb-101, Apr 3, 2018.

  1. climb-101

    climb-101 Full Access Member

    Posts:
    258
    Likes Received:
    271
    Joined:
    Mar 12, 2018
    Location:
    montana
    First Name:
    seth
    Truck Year:
    974
    Truck Model:
    c2 crew cab
    Engine Size:
    6.0 LS
    I figured i should finally make a build thread for my ‘74 crew. the truck is a good starting point. the body and interior are in good shape. The only down side is that it’s 2wd. Rather than trying to find another frame that’s 4wd we just decided to hand this one over. I did some looking on the forms and everyone says to swap frames. maybe we just like doing things the hard way but we’re going to try to just make this one 4wd.

    I figured some parts from DIY4X were in order as well as finding a dana 60 for the front and a 205 transfer case. The people at DIY4X have been great to deal with. I got the rear disk brakesetup, cross over steering, B-52 setup, front shackle mounts, rear shackle flip, and front diff cover with the ram assist setup. We’re also planing on dropping in a 6.0LS/4L80e and going to try to get 37” tires under it.

    here is what i’m starting with. The guy i got the truck from wanted to keep the big block but i got to keep the th400/gear vendors setup. Sold the rims and the gear vendors just to offset the price of the truck so i’m not in it very much. At some point the box was switched since it had gas doors and not just the gas caps.

    33434C72-A1BD-436B-B593-796966715BBF.jpeg

    41AD356F-4601-4404-9647-C35076851366.jpeg

    A09EBA30-67A2-4851-A881-9BB130F8D7DE.jpeg

    2A90B870-85A9-42FB-9BAA-DA781B3DECF8.jpeg

    ABA0570F-1E26-4F40-93A3-00BE562DD5F6.jpeg
     
    MrMarty51, Catbox and Clutch like this.
  2. climb-101

    climb-101 Full Access Member

    Posts:
    258
    Likes Received:
    271
    Joined:
    Mar 12, 2018
    Location:
    montana
    First Name:
    seth
    Truck Year:
    974
    Truck Model:
    c2 crew cab
    Engine Size:
    6.0 LS
    Decided to dig the truck out of the snow pile, pull the box and start getting the rear disk setup on it. i also found out that the c20 crew cabs actually have the 1 ton frames. I had to send the rear shackle flip back to DIY4X and exchange it for the 1 ton flip setup. the rear disk brakes were a simple swap and will be much better for the truck.

    144BF09D-E11E-4A79-B9FF-8E7FFCC87D9A.jpeg

    F860426C-DA13-4716-9D52-CCF4AB092B34.jpeg

    BAC1662C-AED9-4FDF-AA5E-0DCC067360FA.jpeg

    F528E3C7-D74D-42B9-8A84-514CD9F755D1.jpeg

    69F4DDD1-F3D2-4A37-8891-45F750E7F7D6.jpeg
     
  3. climb-101

    climb-101 Full Access Member

    Posts:
    258
    Likes Received:
    271
    Joined:
    Mar 12, 2018
    Location:
    montana
    First Name:
    seth
    Truck Year:
    974
    Truck Model:
    c2 crew cab
    Engine Size:
    6.0 LS
    Got new body bushings for the truck from off road specialty just to find out they didn’t fit. Called up energy suspension and asked them for the part number and they said that they don’t make a bushing setup for the 73-74 crew cabs.

    what i found is that the front bushings are smaller in diameter than the factory ones and they fall through the mounting holes on the b-52 setup. also the rear cab mounts are 3/4” taller than the factory bushings.

    The part number for the kit is 3.4140G and is listed for the ‘75-‘80 truck’s. According to off road specialty they should fit since the trucks are the same and don’t know what’s going on. They said they would take them back without issue if i want. I think i can make all but the front bushings work but i have some from a ford truck i did in the past that i can use for the front bushings and just cut the rear ones down in the lathe.

    FEE29768-61E6-4599-A6A6-7D5C619042C5.jpeg

    91DDFCA6-7909-4A4B-9318-D027529C3DAD.jpeg

    B9AD32D3-4021-4776-8E17-D71440D1129B.jpeg

    4C009014-09B7-46FF-97EC-4BD2334C9B42.jpeg

    F594DB55-CF2C-4952-8CE1-3076D92BB440.jpeg

    last 2 pics show the ford bushing in place and the size difference. it’s bushing number 4155 just in case someone else ever needs that info. I think it still needs about 1/8” trimmed off it.
     
    MrMarty51 and Clutch like this.
  4. climb-101

    climb-101 Full Access Member

    Posts:
    258
    Likes Received:
    271
    Joined:
    Mar 12, 2018
    Location:
    montana
    First Name:
    seth
    Truck Year:
    974
    Truck Model:
    c2 crew cab
    Engine Size:
    6.0 LS
    Time to try to fit the B-52 setup onto the frame. I talked to Kurt at DIY4X and i know they holes won’t match up since the brackets are designed for the 4wd frames. The prob i didn’t expect us that the bottom part of the bracket that bolts up through the bottom of the frame dosnt match the shape of the frame rail. I’m thinking that it’s possably because they didn’t make a 1 ton 4x4 and the frames are a little’s different since the crew cabs are on a 1 ton frame. My plan isn’t to just cut the lower tab off the bracket and make my own, a little cutting and grinding and welding is no big deal. Its just part of building stuff.

    in the pics you can see where i used them too front hole in the b-52 bracket and top front cab mount rivet hole. this give me a good flat surface for the mount between the core support and the B-52. its the same height as the factory mount. Judging by the pics it’s about an inch further back than then the b-52 bracket normally sits (just judging by looking at pics on DYI4X web sight). This should be fine since there are multiple holes for the leaf springs so i should still be able to get the tire in the right spot. I does give me a good position to get the bushing mounted centered on the bracket and plenty of room for the bottom of the bushing.

    59798F2C-A04E-44B3-920F-55AE0958A7FC.jpeg

    E3420C32-4D44-45FA-9483-38596A790EB8.jpeg

    1A92110C-7532-42D9-8133-59BCC7CA826C.jpeg

    A5546811-B217-4CAE-94BE-DBBFA52A6A52.jpeg

    you can see where the lower tab needs to be cut off and switched to match the frame
     
    Last edited: Apr 3, 2018
    MrMarty51 likes this.
  5. climb-101

    climb-101 Full Access Member

    Posts:
    258
    Likes Received:
    271
    Joined:
    Mar 12, 2018
    Location:
    montana
    First Name:
    seth
    Truck Year:
    974
    Truck Model:
    c2 crew cab
    Engine Size:
    6.0 LS
    did some cutting and changing the brackets around today. 1 side done, 1 to go. had to weld up a few holes in the frame and cut the tab for the bottom of the frame off and make a new one

    BC228CA7-4C1A-4335-9FDB-5C7882A07493.jpeg

    F20FF52F-E190-4F76-8E79-8903896D264A.jpeg

    C40544BA-1C37-4D97-B30D-576F4AA59B61.jpeg

    2ABD01BB-5AC5-448D-AF88-EEA7546AF082.jpeg

    EDC08BE9-DC98-4175-9A00-1D87C7D01EB1.jpeg
     
  6. bucket

    bucket Super Moderator Staff Member

    Age:
    39
    Posts:
    23,433
    Likes Received:
    10,048
    Joined:
    Aug 3, 2010
    Location:
    Usually not in Ohio
    First Name:
    Andy
    Truck Year:
    '77, '78, '79, '84, '88
    Truck Model:
    K5 thru K30
    Engine Size:
    350-454
    I love this thread! Finally someone documenting what actually needs done instead of just saying it's too different and doesn't work!
     
  7. climb-101

    climb-101 Full Access Member

    Posts:
    258
    Likes Received:
    271
    Joined:
    Mar 12, 2018
    Location:
    montana
    First Name:
    seth
    Truck Year:
    974
    Truck Model:
    c2 crew cab
    Engine Size:
    6.0 LS
    thanks. i figured why not take a few pic and make a thread. i saw lots of guys asking and little to know info on it. I figured it’s just metal, i can cut it apart and weld it back together.
     
    MrMarty51, B.K. Cunningham and Clutch like this.
  8. climb-101

    climb-101 Full Access Member

    Posts:
    258
    Likes Received:
    271
    Joined:
    Mar 12, 2018
    Location:
    montana
    First Name:
    seth
    Truck Year:
    974
    Truck Model:
    c2 crew cab
    Engine Size:
    6.0 LS
    got got the brackets mostly modified to fit the frame. I did the first one then set them side by side for a comparison. I had to fill most of the holes in the frame except for the front upper factory rivet hole. i used that hole as a starting point for the bracket. The upper 3 holes i had no prob just drilling the other 2 and put some bolts in it.

    as far as the bottom set of holes, the furthest back one can be drilled in the frame. the next 2 need to be drilled through the bracket and the frame because there too close to the bottom.

    0E0308E0-EAB9-4AF4-B2EC-DF0CBBC15A09.jpeg

    the difference in the tab that bolts into the bottom of the frame

    A7EDA949-96BD-4445-96F5-2A2535620DE6.jpeg

    filled most of these holes except for the top right one

    46F04440-0519-4353-9AA0-C73CB159A496.jpeg

    some tig welding, didn’t want the weld to hit the frame on the inside corner

    38241D8D-DC9C-4D54-B857-FB5E3E001269.jpeg

    the hole that is circled it the factory rivet hole

    B367199D-3E92-4E95-A367-3529F4FE3CAB.jpeg
     
    MrMarty51 and Clutch like this.
  9. climb-101

    climb-101 Full Access Member

    Posts:
    258
    Likes Received:
    271
    Joined:
    Mar 12, 2018
    Location:
    montana
    First Name:
    seth
    Truck Year:
    974
    Truck Model:
    c2 crew cab
    Engine Size:
    6.0 LS
    I also noticed the brackets were about 1/4”to 3/8” off at this part. it’s prob not a huge deal but i figured i might as well cut it apart and fix it since i was already cutting stuff up.

    E6A85A1D-9791-459A-AA99-B01EB3C5D7D2.jpeg

    AFB55680-3676-4D64-9B8C-2EA250D940B0.jpeg
     
    MrMarty51 and Clutch like this.
  10. climb-101

    climb-101 Full Access Member

    Posts:
    258
    Likes Received:
    271
    Joined:
    Mar 12, 2018
    Location:
    montana
    First Name:
    seth
    Truck Year:
    974
    Truck Model:
    c2 crew cab
    Engine Size:
    6.0 LS
    got a little bit of stuff dune on the truck today. i got the 2wd stuff pulled out and picked up the dana 60 and 205 transfer case. still have to get the rear portion of the front springs mounts figured out.

    DE688042-94FB-43D2-9BF6-E724DFE87AC2.jpeg

    0D7E32F2-4FC2-4CDC-B625-3FF725FD4B39.jpeg

    116E3F37-3200-4863-B8EE-DE71AFE663B3.jpeg
     
    MrMarty51 and Clutch like this.
  11. bucket

    bucket Super Moderator Staff Member

    Age:
    39
    Posts:
    23,433
    Likes Received:
    10,048
    Joined:
    Aug 3, 2010
    Location:
    Usually not in Ohio
    First Name:
    Andy
    Truck Year:
    '77, '78, '79, '84, '88
    Truck Model:
    K5 thru K30
    Engine Size:
    350-454
    What are you doing for an engine crossmember? ORD or Diy4x I'm guessing?
     
    MrMarty51 likes this.
  12. climb-101

    climb-101 Full Access Member

    Posts:
    258
    Likes Received:
    271
    Joined:
    Mar 12, 2018
    Location:
    montana
    First Name:
    seth
    Truck Year:
    974
    Truck Model:
    c2 crew cab
    Engine Size:
    6.0 LS
    i will just build one, i’m waiting on the truck i’m pulling the motor/trans. once i have those i will set it in and mock everything up. as of now, my plan is to box the the frame and make a bolt in cross member, just in case i ever need to get to something under the engine.

    i’m going to try to get everything under the 2wd cab without having to lift the cab. that means i will need to drop the motor 2” i think which i should be ok since the frame on the crew cabs are 8” tall on the 6” on the regular cabs.
     
    Last edited: Apr 8, 2018
    MrMarty51 and Clutch like this.
  13. climb-101

    climb-101 Full Access Member

    Posts:
    258
    Likes Received:
    271
    Joined:
    Mar 12, 2018
    Location:
    montana
    First Name:
    seth
    Truck Year:
    974
    Truck Model:
    c2 crew cab
    Engine Size:
    6.0 LS
    finally got the front spring all hung on the frame. I did some measuring and found the center of the wheel well and from that point measured to find which hole the front of the springs need to be in. once i had that, i figured out where the rear needed to be.

    I made an aluminum template for mounting the hangers. I also had to notch the frame about 1/2” to clear the shackles. Along with notching the frame, i had to cut out where the peking brake cable came through since it isn’t flat. I also had to fill in the passenger side since the bolt ended up right in one of the holes.

    BB697CEB-84EC-4935-BC5D-217860747EE1.jpeg
    lining up the front holes

    615997B7-444C-4253-B0FE-1090DD74339E.jpeg
    if you look close, you can see where the frame is pushed in for the cable. i just used the hole saw to cut it out.

    634244E0-B275-4310-BB10-EEF199896037.jpeg

    24ECA0C8-1823-4A64-9C28-15489C9AE8CD.jpeg

    60A7A1D3-728B-4D7B-A7C5-80213D42145C.jpeg
     
    MrMarty51 likes this.
  14. climb-101

    climb-101 Full Access Member

    Posts:
    258
    Likes Received:
    271
    Joined:
    Mar 12, 2018
    Location:
    montana
    First Name:
    seth
    Truck Year:
    974
    Truck Model:
    c2 crew cab
    Engine Size:
    6.0 LS
    here is how i found where i wanted the hangers for the back of the front springs.

    I used 2 holes that’s were in the frame on both sides to get my centerline then measured from back from the front hole. That gave me the first bolt hole. once i had that i put my aluminum template in place, got it squared up how i liked and marked the center hole with a transfer punch. the big center hole is 2 1/8”.

    if you look at the alum plate, i started by using a hole saw and dirilling a 2 1/8” hole. then i can drop it over the shackle hanger and drill the bolt holes while there clamped together. That way i know it all lines up. I kept the center from the hole saw and wrapped tape around it until it fit back in the template that way i had a good location for the center point.

    FA992796-9691-4E95-B045-01F36D29B2F5.jpeg
    you can see the 2 holes i line up with

    C874DD32-A3A0-49C7-8C7B-637C985A267B.jpeg
    this angle matched the frame angle and it was easy to duplicate side to side to keep things even. you can also see the hole that i need to weld up still to get the upper, right bolt in

    FC28B5A3-7342-4470-B7CA-922CD08AC3AA.jpeg
    you can see where i had to notch 1/2” out of the frame for the shackles

    3B42C210-2D4C-46E8-AADD-B1D7D189A8E6.jpeg
    springs finally hung under the truck

    38263EFC-6DB9-4A54-9FEB-5CD994CEFD64.jpeg
    just a pic of the springs from the front
     
  15. bucket

    bucket Super Moderator Staff Member

    Age:
    39
    Posts:
    23,433
    Likes Received:
    10,048
    Joined:
    Aug 3, 2010
    Location:
    Usually not in Ohio
    First Name:
    Andy
    Truck Year:
    '77, '78, '79, '84, '88
    Truck Model:
    K5 thru K30
    Engine Size:
    350-454
    Ah, so those are 52's you are putting up front then?
     
    MrMarty51 likes this.

Share This Page