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Hi I'm rebuilding a 77 GMC, C-15, Short Bed, 2WD
#1426361 Sat Oct 09 2021 05:08 PM
Joined: Oct 2021
Posts: 19
C
Old Mechanochist
I got this truck for $500 running but barley. At first I was ordering parts for a 250 because that's what the air cleaner said. When I got to the lifter covers I realized I had a 292. As I investigated more I realized they also put in a Muncie SM 465 4 speed granny gear trans and a 12 bolt main behind that. But they where idiots! They put the clutch plate in backwards, forgot to put lock-tight on the pinion gear, hydrophiliced a bolt cracking the block near the oil pan and they tack welded the engine mount in on the torque side.

At this point I have replaced the clutch, fixed the cracked block, drilled and bolted the engine mount (to be replaced) and replaced the pinion seal tightening the nut (yes it is loose but as long as I am not pulling it is okay). While replacing the beat up old carburetor and tuned it I realized it has an RV cam. It came with headers and I will be getting a 4 barrel intake at some point. Next I am going to rebuild the rear end with a limited slip.

Then I will start on the body. I found a 80's short bed with a blown 250 head and no title for $1,500. The cab and bed are clean of rust so I can cut the coroners of the cab out and replace my bed. It has the factory L6 A/C, gas tank on the other side and a bunch of other useful parts. I will get it once the VA stop hazing me and gives me my travel pay from nine months nine months ago!

P. S. That is my 86 jeep in the back ground. It has 330,000 thousand miles, it only uses 1/4 of a quart in 3,000 miles and the oil is still clean!

Attached Files
P_20211009_105202_p.jpg (81.86 KB, 155 downloads)
P_20211009_105154_p.jpg (198.09 KB, 157 downloads)

77, GMC, C-15, Short Bed, 2WD, mystery Mexican 292, Muncie 465, 12 Bolt Main.
Next project: 76, GMC, Vandura, G-3500, 400, THM400, formerly an RV converting to a crew cab flatbed.
I would rather die living than live dying!
Re: Hi I'm rebuilding a 77 GMC, C-15, Short Bed, 2WD
Chiana River #1426383 Sat Oct 09 2021 09:54 PM
Joined: Mar 2007
Posts: 4,977
Leo Offline
'Bolter
Welcome to the site, check out our newest forum, the rounded line. That's a lot of miles!

Re: Hi I'm rebuilding a 77 GMC, C-15, Short Bed, 2WD
Chiana River #1426386 Sat Oct 09 2021 10:38 PM
Joined: Nov 2004
Posts: 2,188
J
Workshop Owner
Cool truck, it's a diamond in the rough. Nice score. thumbs_up

Welcome to the Stovebolt.

John


J Lucas





1941 Chevy 1/2-Ton
1942 Chevy 1.5-Ton SWB
1959 Chevy Apache 31 Fleetside
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1959 Chevy Viking 40

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Re: Hi I'm rebuilding a 77 GMC, C-15, Short Bed, 2WD
J Lucas #1426395 Sun Oct 10 2021 12:05 AM
Joined: Oct 2021
Posts: 19
C
Old Mechanochist
Yes I am very happy with this score as a rough diamond!

And ya, as a mechanic I made too much money off Jeep's and Ford's to ever want to own one. But I got it barley running for $500 as well. Then when I fixed the cooling system I realized it did not use a drop of oil! So I then put around $3,000 in parts into it and have put 30,000 miles on it in one year. It is a bad **** on and off the road.


77, GMC, C-15, Short Bed, 2WD, mystery Mexican 292, Muncie 465, 12 Bolt Main.
Next project: 76, GMC, Vandura, G-3500, 400, THM400, formerly an RV converting to a crew cab flatbed.
I would rather die living than live dying!
Re: Hi I'm rebuilding a 77 GMC, C-15, Short Bed, 2WD
Chiana River #1426403 Sun Oct 10 2021 01:41 AM
Joined: Mar 2007
Posts: 4,977
Leo Offline
'Bolter
A LOT of miles...

Re: Hi I'm rebuilding a 77 GMC, C-15, Short Bed, 2WD
Chiana River #1426410 Sun Oct 10 2021 04:44 AM
Joined: Dec 2002
Posts: 4,257
Moderator - The Electrical Bay and Rocky Mountain Bolters
Welcome to the 'bolt. I'm really starting to like the squarebodys again


Another quality post.


Real Trucks Rattle

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Re: Hi I'm rebuilding a 77 GMC, C-15, Short Bed, 2WD
Rusty Rod #1426431 Sun Oct 10 2021 03:49 PM
Joined: Oct 2021
Posts: 19
C
Old Mechanochist
Originally Posted by Rusty Rod
Welcome to the 'bolt. I'm really starting to like the squarebodys again

Yes, they where designed as work trucks, nothing fancy. When I get it restored I am going to put on the tailgate: "It's just a truck!"


77, GMC, C-15, Short Bed, 2WD, mystery Mexican 292, Muncie 465, 12 Bolt Main.
Next project: 76, GMC, Vandura, G-3500, 400, THM400, formerly an RV converting to a crew cab flatbed.
I would rather die living than live dying!
Re: Hi I'm rebuilding a 77 GMC, C-15, Short Bed, 2WD
Chiana River #1426436 Sun Oct 10 2021 04:29 PM
Joined: Feb 2019
Posts: 2,221
P
AD Addict
Welcome to the ‘bolt! Nice start to your project. 30,000 miles in the first year! Wow! Sounds like you have things under control. Good luck with the rest of your build!

Last edited by Phak1; Sun Oct 10 2021 04:36 PM.

Phil

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Re: Hi I'm rebuilding a 77 GMC, C-15, Short Bed, 2WD
Chiana River #1426453 Sun Oct 10 2021 07:01 PM
Joined: Dec 2001
Posts: 15,603
'Bolter
Welcome to Stovebolt. Keep trucking brother, I'll see you in the garage forums.


1937 Chevy Pickup [stovebolt.com]

1952 Chevy Panel [stovebolt.com]
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Re: Hi I'm rebuilding a 77 GMC, C-15, Short Bed, 2WD
Rusty Rod #1426506 Mon Oct 11 2021 12:36 PM
Joined: Mar 2007
Posts: 4,977
Leo Offline
'Bolter
Originally Posted by Rusty Rod
Welcome to the 'bolt. I'm really starting to like the squarebodys again
I agree. I sold my 1953 panel several years ago, now have an '86 pickup. Can't believe how many comments I get, from all ages. Way more than from the '53.

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Moderated by  Achipmunk, Rusty Rod 

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