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My 1 ton project #1299417 Sun Feb 17 2019 10:26 PM
Joined: Mar 2005
Posts: 174
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bluechev Offline OP
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Well here goes, I had a nice 50 3800 ex firetruck with low miles and completely solid and straight body. It was powered by a dual carb 261, it ran and drove really well. I was going to upgrade to a 302 gmc so I pulled the engine and completely stripped the cab in preparation for a full paint job. Meantime I find another project or too ( I got AD ADHD, anyone relate? ) and get an offer on the body I couldn’t refuse. Well I miss having a 1 ton and I’ve got a 48 gmc 1/2 ton longbed which will make a great cruising truck so I traded my chassis back from a buddy and I’m going to put together another 1 ton for a DD. Currently have a 261 in the machine shop. It’s gett an edmunds 2x2 intake with Langdon Carter Weber setup, bulldog cam, small cap HEI, Fentons and full balance of reciprocating assembly. I just picked up a Dana 61 axle from an early 90s Dodge and a New Process NP540 direct drive 5 speed trans. The rear ratio is 3.07, with 7.41 1st gear and 4.05 2cnd in the trans I’ll be able to pull/haul anything I want to and drive the interstate too.

Attached Files
A43CEE6B-3701-4E6E-8C24-571984B258FF.jpeg (474.53 KB, 272 downloads)
E8549808-AAC6-4754-AE70-630C60AFA505.jpeg (305.17 KB, 274 downloads)
0D00A29A-5215-4EBE-BBED-48027C1CA160.jpeg (331.42 KB, 260 downloads)
Last edited by bluechev; Wed Feb 20 2019 04:31 AM.

Robert French MY3800FIRETRUCK
Re: My 1 ton project [Re: bluechev] #1299418 Sun Feb 17 2019 10:33 PM
Joined: Mar 2005
Posts: 174
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bluechev Offline OP
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I’m not seeing the caption with my pics. The yellow and black truck is a 47 3/4 ton I’ll be using it’s cab. The primer and red truck is my old 50 3800 ton I’m using it’s chassis but going with single wheels for practicality/economy’s sake. 16x6 F250 wheels, common 235/85R16 tires. The last 2 pic are of course the NP540 5 speed.


Robert French MY3800FIRETRUCK
Re: My 1 ton project [Re: bluechev] #1299527 Mon Feb 18 2019 09:40 PM
Joined: May 2006
Posts: 601
T
tom moore Offline
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Looks like a good project!

Re: My 1 ton project [Re: bluechev] #1299529 Mon Feb 18 2019 09:45 PM
Joined: Apr 2002
Posts: 1,487
F
Fox Offline
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I like your tranny stand!


In the Stovebolt Gallery
More pictures here

1951 GMC 9430 1 ton dually—-Shiny!

1970 Chevrolet C10 - Grandpa’s- My first truck.—in progress to shiny
1972 Chevrolet C20- rusted
1970 Chevrolet K20 Suburban—rusted.
1950 Chevrolet 1300- in progress to shiny.

Parts trucks-
1951 GMC 9300
1951-GMC 9430
1951- Chevrolet 1300
Re: My 1 ton project [Re: bluechev] #1299536 Mon Feb 18 2019 10:19 PM
Joined: Jun 2011
Posts: 2,799
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EdPruss Offline
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Don't forget, GMC's are about 3" longer than Chevies.

NP 540 series make great trans' for your application, I have adapted several to 4wd applications.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
Re: My 1 ton project [Re: Fox] #1299558 Tue Feb 19 2019 12:40 AM
Joined: Mar 2005
Posts: 174
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bluechev Offline OP
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Originally Posted by Fox
I like your tranny stand!

Ha! It’s a little rickety I used 1-1/2x1-1/2x3/16 angle cuz I got a bunch of it, 2x2x1/4 woulda been better but it’ll suffice. Thing weighs 175 lbs I didn’t feel like wrasling it in the floor or on the work bench so I spent most of a day making it. I can sit in an old swivel office chair and play with it, definitely worth the time!


Robert French MY3800FIRETRUCK
Re: My 1 ton project [Re: EdPruss] #1299563 Tue Feb 19 2019 12:54 AM
Joined: Mar 2005
Posts: 174
B
bluechev Offline OP
Shop Shark
Originally Posted by EdPruss
Don't forget, GMC's are about 3" longer than Chevies.

NP 540 series make great trans' for your application, I have adapted several to 4wd applications.

Ed

I’m decided to save the 302 for my 48 gmc 1/2. I’m getting 261 and 848 head machined right now for it, will have Edmunds 2x2 intake with Langdons carter Weber setup and some other goodies.I’ll have to swap a stock Chevy crossmember back in the frame because I modified the original to fit the gmc. These pics show what I did to the crossmember, I couldn’t resist adding one of my 302 I made the intake outa steel, it’s too heavy but hey it ain’t a race car. As much as I love the old SM420 4 speed im sure this 540 trans is going to be so much better. With the 3.07 rear gears I’ll be able to downshift to 4th and still maintain 55-60 mph

Attached Files
1F12C3C9-BDE2-4B95-86E0-C21A77B6108A.jpeg (197.17 KB, 182 downloads)
27CE5810-AF3C-4C03-9062-047748518AFB.jpeg (236.17 KB, 187 downloads)
8D859324-8981-4FF6-A885-A20BEE122E82.jpeg (176.12 KB, 179 downloads)

Robert French MY3800FIRETRUCK
Re: My 1 ton project [Re: tom moore] #1299566 Tue Feb 19 2019 12:58 AM
Joined: Mar 2005
Posts: 174
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bluechev Offline OP
Shop Shark
Originally Posted by tom moore
Looks like a good project!

Thanks, I know I’ll really enjoy driving it and using it like a truck I hope you guys will check on me from time to time and help me stay motivated I’d like to get this thing running in the next 6 months to a year.

Last edited by bluechev; Tue Feb 19 2019 02:01 AM.

Robert French MY3800FIRETRUCK
Re: My 1 ton project [Re: bluechev] #1299759 Wed Feb 20 2019 02:38 AM
Joined: Jun 2011
Posts: 2,799
E
EdPruss Offline
Shop Shark
I put a 540 in an early Bronco with a Buick V-6 and 3.50 gears; with a load, shifted around 55 to 60, worked very well.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
Re: My 1 ton project [Re: EdPruss] #1299780 Wed Feb 20 2019 04:29 AM
Joined: Mar 2005
Posts: 174
B
bluechev Offline OP
Shop Shark
Originally Posted by EdPruss
I put a 540 in an early Bronco with a Buick V-6 and 3.50 gears; with a load, shifted around 55 to 60, worked very well.

Ed

Just what I’m hoping for.


Robert French MY3800FIRETRUCK
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