71 GMC 4x4 4BT
4BTSwaps.com is the premier Cummins Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 19 of 19

Thread: 71 GMC 4x4 4BT

  1. #1
    Registered User
    Join Date
    Apr 2012
    Location
    Indiana
    Posts
    11
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Default 71 GMC 4x4 4BT

    Hi, I am just now starting my build thread. This is my first time ever posting. So I'm new to this, but I've been reading everyones post on here for the past few years while I've been working on this truck. My goal for this truck is to make it my daily driver. Above average horse power, possibly up to 150 hp. I also want it to be as fuel efficient as possible for the type of truck it is. I bought this truck a few years ago in Ft. Myers, FL and brought it back to Indiana for restoration and diesel power train. I've got a lot of pictures for this build from the beginning to the end. I'll post some as I get the opportunity. Right now I'm in the final stages of completion. Almost ready for the tuning stage. Here's a pic of where it all started in Ft. Myers. And a pic of where it is now, almost at completion.
    I'll back up and share some of the build process and lessons learned through this journey.
    Attached Images Attached Images

  2. Remove Advertisements
    4BTSwaps.com
    Advertisements
     

  3. #2
    Registered User
    Join Date
    May 2012
    Location
    Texas
    Posts
    2,316
    Thanks
    8
    Thanked 11 Times in 11 Posts

    Default

    Super sweet, can't wait!

  4. #3
    Supporting Member
    Join Date
    Apr 2012
    Location
    madisonville ky
    Posts
    608
    Thanks
    15
    Thanked 26 Times in 25 Posts

    Default

    Nice truck! Where you located?
    1961 GMC 1-ton 4x4 ...4bta hx30w 6cm, ranger O.D., sm465, np205, D60f, D70HD 4.11, 10,000 Ramsey pto winch...... Daily driver
    http://67-72chevytrucks.com/vboard/s...&highlight=4bt

  5. #4
    Registered User
    Join Date
    Feb 2007
    Location
    So-central Kommifornia
    Posts
    3,392
    Thanks
    165
    Thanked 176 Times in 135 Posts

    Default

    Sounds good. !40-150 HP is plenty for a very useful, driveable, enjoyable rig while still getting excelent mileage, as long as overall gearing is correct.
    Please, READ STICKIES at top of forum sections!

    1967 Dodge Town Wagon now D-200+ - CPL 858 - HTT Stage II/H1C 16cm2 Ex/58mm Comp wheel, no W/G, turned fuel pin, twisted screws, 3,200 spring, milled head, '92-'93 CTD intercooler [THANKS BILL!!!] Dodge NV4500, 4.10 DANA 60HD rear, '72 Dodge D-200 front axle, 1 ton+ springs, Air-Lift front airbags, front/rear swaybars, Tom Wood's driveshaft, Hercules All Trac A/T in LT 245/75-16.

  6. #5
    Registered User
    Join Date
    Apr 2012
    Location
    Indiana
    Posts
    11
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Default

    Quote Originally Posted by ky-donzi View Post
    Nice truck! Where you located?
    Trafalgar. About 45 Minutes south of Indianapolis

  7. #6
    Registered User
    Join Date
    Apr 2012
    Location
    Indiana
    Posts
    11
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Default

    Here's a picture with the engine in place. I was working on setting up the HY35 with a 24 valve cut down manifold. I did get it to fit where I like it, however, I did not use this setup. I used a HX30. Which fit almost in the same identical place including the exhaust and all. Here is a pic of the motor mounts. Wasn't sure at the time on how to set these up, I haven't really seen any good pics on how to do this. They do work fine. I used first gen. motor mounts in between the angles. I will be replacing these with the hydraulic motor mounts. Since I've driven it just a little bit I can feel a little bit of vibration at cruising speeds between 55 and 60. Probably will consider in the future the fluid damper balancer. Also, to get the oil pan clearance without modification I put a 4 inch lift kit on the truck. It has a NV4500 transmission which mounted to the original transmission mount in the same location. I used a Chrysler mount for the transmission. The NP205 transfer case shifter worked out almost in the same place as the original turbo 350/NP205. I am running the original gears in this truck which is 3.08 and 33 inch tires.
    Today I took it out for a quick trip. It cruises 60 at 2,000 RPM's in 4'th gear. So the 5'th gear with this setup will be a true overdrive. Probably won't use it unless I'm running 63/64 or over.
    The driver side motor mount is not as close as it looks in the picture. I'm open to suggestions if anyone has any pics of how this setup would work better with the hydraulic mounts.
    More to come soon!
    Attached Images Attached Images
    Last edited by Dale_1972; 06-18-2013 at 08:58 PM.

  8. #7
    Supporting Member
    Join Date
    Apr 2012
    Location
    madisonville ky
    Posts
    608
    Thanks
    15
    Thanked 26 Times in 25 Posts

    Default

    I was in Terre Haute most of last week. Wished I'd known I'd liked to see your truck
    1961 GMC 1-ton 4x4 ...4bta hx30w 6cm, ranger O.D., sm465, np205, D60f, D70HD 4.11, 10,000 Ramsey pto winch...... Daily driver
    http://67-72chevytrucks.com/vboard/s...&highlight=4bt

  9. #8
    Registered User
    Join Date
    May 2012
    Location
    Texas
    Posts
    2,316
    Thanks
    8
    Thanked 11 Times in 11 Posts

    Default

    Do u like the power with those gears? I'm doing the same 3.08 with 33's and I'm worried I might be too tall.

  10. #9
    Registered User
    Join Date
    Apr 2012
    Location
    Indiana
    Posts
    11
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Default

    Quote Originally Posted by Drifter View Post
    Do u like the power with those gears? I'm doing the same 3.08 with 33's and I'm worried I might be too tall.
    I have only drove it about 200 miles so far. I think it's doing really well 1st does up to 10 mph, 2nd 10 to 20,3rd 20 to 40,4th 40 to 62 , 5th 62+.
    If I can get it posted, ill post a little video of my gauges on interstate .
    This engine is a factory nonintercooled , stock injectors, pump was tune 10%above spec ,hx30 turbo , no fuel pin or spring yet. It does have a intercooler though, from a first gen dodge.

  11. #10
    Registered User
    Join Date
    May 2012
    Location
    Texas
    Posts
    2,316
    Thanks
    8
    Thanked 11 Times in 11 Posts

    Default

    Sweet

  12. #11
    Supporting Member things's Avatar
    Join Date
    May 2011
    Location
    Santa Barbara
    Posts
    673
    Thanks
    15
    Thanked 20 Times in 19 Posts

    Default

    So how was your pan to pumpkin fit? I have about 3" to my bump stops, had to change out the quick drain plug and grind my pumpkin a little. Nothing a lift kit could of fixed but I liked the stance. great truck! Jeff
    Finished! 1965 GMC 1/2 TON 4X4- 4BT-M5R2 Divorced Rockwell Transfer Case. Dana 44 Front and Rear. 3200 Gov. Spring. TDC Fuel Pin. P/S -PB. On 33X10.50 X15 M/S. Rancho 9000

  13. #12
    Registered User
    Join Date
    Apr 2012
    Location
    Indiana
    Posts
    11
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Default

    Quote Originally Posted by things View Post
    So how was your pan to pumpkin fit? I have about 3" to my bump stops, had to change out the quick drain plug and grind my pumpkin a little. Nothing a lift kit could of fixed but I liked the stance. great truck! Jeff
    This one was that way without 4" lift . The oil drain was about a finger thickness from pumpkin , so I went the lift route.
    Attached Images Attached Images

  14. #13
    Supporting Member things's Avatar
    Join Date
    May 2011
    Location
    Santa Barbara
    Posts
    673
    Thanks
    15
    Thanked 20 Times in 19 Posts

    Default

    That looks good, is that with the 4" lift?
    Finished! 1965 GMC 1/2 TON 4X4- 4BT-M5R2 Divorced Rockwell Transfer Case. Dana 44 Front and Rear. 3200 Gov. Spring. TDC Fuel Pin. P/S -PB. On 33X10.50 X15 M/S. Rancho 9000

  15. #14
    Supporting Member
    Join Date
    Apr 2012
    Location
    madisonville ky
    Posts
    608
    Thanks
    15
    Thanked 26 Times in 25 Posts

    Default

    The lift looks good! Not to high
    1961 GMC 1-ton 4x4 ...4bta hx30w 6cm, ranger O.D., sm465, np205, D60f, D70HD 4.11, 10,000 Ramsey pto winch...... Daily driver
    http://67-72chevytrucks.com/vboard/s...&highlight=4bt

  16. #15
    Registered User
    Join Date
    Apr 2012
    Location
    Indiana
    Posts
    11
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Default

    Quote Originally Posted by things View Post
    That looks good, is that with the 4" lift?
    Ya that's with the 4" lift.

  17. #16
    New Registered User
    Join Date
    Sep 2010
    Location
    corona ca
    Posts
    1
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Default

    Any up dates

  18. #17
    Supporting Member chickenlights's Avatar
    Join Date
    Mar 2010
    Location
    columbus, indiana
    Posts
    201
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Default

    Quote Originally Posted by Dale_1972 View Post
    Trafalgar. About 45 Minutes south of Indianapolis
    im just south of columbus in scipio, would love to come see your truck sometime. im wanting to do another swap into an old chevy like this next.
    2000 quad cab dakota 4x4 4bt cummins, hx30, 30% over injectors (6X9.5) nv4500 trans, np231 t-case Fuel Screw Turned -3 from runaway, M&H M2 fuel pin, two turns UP on the star wheel. Dodge 9.25 rear LSD with 3.55 gears 275/75/R16 Hankook RF-10s

  19. #18
    Registered User
    Join Date
    Apr 2012
    Location
    Indiana
    Posts
    11
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Default

    I've got over 3000 mile on it now . It runs out really nice with the current gearing with plenty of power. I still havnt done any extra tweaking on the pump yet, although it is set 10% above spec. . I havnt nailed down the fuel mileage yet I think it's doing around 25 mpg.
    I need to install cross over steering, does anyone have any suggestions with good results ? I have to much play and bump steering .

  20. #19
    Registered User
    Join Date
    Apr 2012
    Location
    Indiana
    Posts
    11
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Default

    Quote Originally Posted by chickenlights View Post
    im just south of columbus in scipio, would love to come see your truck sometime. im wanting to do another swap into an old chevy like this next.
    Your welcome to see it anytime . Pm me and I'll send you my # so if or when your in the area you can stop by. I also have a 1969 Dodge 4x4 waiting for transplant . I have a 92 innercooled engine and a zf to put in it, I'm considering a rto 6610 though. Waiting till I get all the little bugs worked out of this GMC first . I have a nice video of the gauge with it running on the interstate if I can get it posted.

+ Reply to Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts