Author Topic: 81 Crew cab dually 2wd CUMMINS  (Read 77501 times)

Offline Pullin81

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81 Crew cab dually 2wd CUMMINS
« on: February 22, 2010, 07:22:30 PM »
Well along with my 86 short box i have now started on a new project it a 81 gmc 3+3 dually 2wd with a 79 front clip....This truck is going to be my hauling truck.... i want to be able to drive this anywhere and be able to use it as a truck....

Drive train.... well it used to be a 350 engine with turbo 400....ive tossed it all...Im replacing it with a 96 12Valve cummins and a NV4500 the engine will stay stock for now untill i finish the whole truck....

Suspension... i gutted all the spring suspension and put it on air 2600pound front bags and 3 inch spindles...Rear is a paralelle four link rear with a c notch and 3800 pound bags....I would like to make an engine mount compressor but i will use the electric one for now....

Exterior...i plan on keeing the looks fairl simple nothing crazy....cowl hood ive built a custom grill that i will reveal later....RBP style... LED bulbs all around....Im going to run two exhaust systems on it with cut outs im going to run a 4" under truck exhaust and also  6" dual flange cut stacks when im crusin.....just want to keep the soot off my trailer when towing haha....

I plan on either painting it it two tone flat black/grey....or two tone dark grey/light grey base clear..... Im going to stick some 17" wheels from ultra on this.....Im looking for alternitive seats for it but i havnt decided benches are nice but they need to be recovered so i figure if i run into something else before i need to make a decision...i also thought about cutting the frame down to a short box but it looks super low nice and long haha....
« Last Edit: February 23, 2010, 06:37:07 PM by Pullin81 »
86 gmc short box...454/th400
81 gmc crew cab dually bagged 5.9 cummins/nv4500

Offline Pullin81

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Re: 81 Crew cab dually 2wd CUMMINS
« Reply #1 on: February 22, 2010, 07:24:45 PM »
More pictures... i converted the vacuum brakes to hydraboost...i took the pedal assembly and steering column and trans tunnel out of my donor truck
86 gmc short box...454/th400
81 gmc crew cab dually bagged 5.9 cummins/nv4500

Offline Pullin81

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Re: 81 Crew cab dually 2wd CUMMINS
« Reply #2 on: February 22, 2010, 07:26:34 PM »
Well heres the hummin cummins/tranny.....and also the heavy modified front rad and core support to get the rad and intercooler in.... motor should be going in this weekend if all goes well..
86 gmc short box...454/th400
81 gmc crew cab dually bagged 5.9 cummins/nv4500

Offline Layne

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Re: 81 Crew cab dually 2wd CUMMINS
« Reply #3 on: February 22, 2010, 07:59:31 PM »
Stacks! Sweet. :D
77 c-10 - 77 400 86 700r4 "Emmy"
83 citation - 2.5L Four on the Floor!
88 sierra - reman 350 700r4 "Eleanor"
All normal practicality and rational money handling goes out of the window when it comes to my truck.

Offline Captkaos

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Re: 81 Crew cab dually 2wd CUMMINS
« Reply #4 on: February 22, 2010, 09:25:44 PM »
Welcome, the more I see this the more enticing it becomes.  There are a couple more on here with these.

Offline crewcabfred

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Re: 81 Crew cab dually 2wd CUMMINS
« Reply #5 on: February 23, 2010, 11:40:27 AM »
cools, perfect candidate for the cummins.  ill be watching the progress   -good luck!

Offline mrboyy17

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Re: 81 Crew cab dually 2wd CUMMINS
« Reply #6 on: February 23, 2010, 12:09:05 PM »
man i would kill to be able to do this swap on my truck but dude your truck has to be one of the most ugly trucks ive ever seen!  but its cool though

Offline 1983stepside

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Re: 81 Crew cab dually 2wd CUMMINS
« Reply #7 on: February 23, 2010, 04:17:05 PM »
this is a nice truck id love to build one like yours, be sure to post lots of pics and maybe bigger pics so we all can see what your doing a lil better  8)

Offline Pullin81

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Re: 81 Crew cab dually 2wd CUMMINS
« Reply #8 on: February 23, 2010, 06:29:21 PM »
man i would kill to be able to do this swap on my truck but dude your truck has to be one of the most ugly trucks ive ever seen!  but its cool though

HAHA its only ugly cause its not done...... but thanks man lol
86 gmc short box...454/th400
81 gmc crew cab dually bagged 5.9 cummins/nv4500

Offline Pullin81

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Re: 81 Crew cab dually 2wd CUMMINS
« Reply #9 on: February 23, 2010, 06:40:24 PM »
well i drew this up quick when i got the truck only thing is the scanner doesnt pick up the pencil well but ya get the idea other than the stacks.
86 gmc short box...454/th400
81 gmc crew cab dually bagged 5.9 cummins/nv4500

Offline crewcabfred

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Re: 81 Crew cab dually 2wd CUMMINS
« Reply #10 on: February 24, 2010, 11:34:37 AM »
What innercooler/radiator/condensor are you using for the swap?

Offline Pullin81

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Re: 81 Crew cab dually 2wd CUMMINS
« Reply #11 on: February 24, 2010, 09:07:37 PM »
What innercooler/radiator/condensor are you using for the swap?

I just used the stock dodge rad and innercooler out of the 96 donor truck
86 gmc short box...454/th400
81 gmc crew cab dually bagged 5.9 cummins/nv4500

Offline Pullin81

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Re: 81 Crew cab dually 2wd CUMMINS
« Reply #12 on: March 07, 2010, 10:22:03 PM »
well i got the engine and tranny in just have to clean uo and make all the mount brackets pretty and finish up the tranny crossmember....hopefuly these pictures are a bit bigger... i took them on my phone because my digital camera wont make the file size small enough....
86 gmc short box...454/th400
81 gmc crew cab dually bagged 5.9 cummins/nv4500

Offline cubicdollars

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Re: 81 Crew cab dually 2wd CUMMINS
« Reply #13 on: March 08, 2010, 07:20:33 AM »
Looks good tucked in there, Almost Factory :)
1977 Stepside,F2 Procharged BBC 505
1984 Buick T Type Regal, LS Swapped

Offline Pullin81

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Re: 81 Crew cab dually 2wd CUMMINS
« Reply #14 on: March 08, 2010, 09:33:18 AM »
funny you say that because the rad bolted into existing holes in the rad support... all the hoses reach.... apparently my chevy Power Steering will hook right up to the dodge so i can run my brakes and steering.... only thing i had to cut was the front of the rad support to poke the Innercooler threw and i took out the support that under the fan/ harmonic and built one out of square tubing so it wouldnt be near the harmonic.... ill have to make my brake lines a little longer but thats fine i planned on changint them anyways..
86 gmc short box...454/th400
81 gmc crew cab dually bagged 5.9 cummins/nv4500