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Keeping your resto going

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Irwin Arnstein working on his
1959 Chevy 1-Ton

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doyle1950 #1454420 Wed Jun 08 2022 01:26 PM
Joined: May 2011
Posts: 100
For what it's worth: Classic Parts has a King Pin set for 46-52 3/4 & 1 ton. Has the .921 dia. pin. There part number 74-113.


doyle1950 #1455165 Wed Jun 15 2022 12:30 AM
Joined: Jul 2019
Posts: 549
Heres the ones i scored off ebay for my 3/4T. You will also need to ream them to fit. I have seen both of these on ebay several times. I just bought mine justvover a year ago. That part number might help you.

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Last edited by Barnfind49; Wed Jun 15 2022 12:31 AM.
doyle1950 #1455476 Sat Jun 18 2022 01:23 AM
Joined: Feb 2010
Posts: 375
I'm a machinist and making a king pin one off that was right would be near impossible. They need to be heat treated per GM specs, if you knew what the alloy was. The best and easiest thing is keep digging to find the correct pin.

doyle1950 #1455520 Sat Jun 18 2022 04:46 PM
Joined: Feb 2004
Posts: 24,733
Kettle Custodian (pot stirrer)
Custom gunsmiths have been heat treating parts since the days of Brown Bess muzzleloaders in the 18th. Century, or before. Using a Brinell hardness tester is not rocket science, and neither is using a rosebud torch and some Kasenit powder. The only places that might need to be tempered are the ends where the bushings ride, and those don't need to be brittle- - - -just surface hardened.

"Freedom's just another word for nothing left to lose"
Kris Kristofferson

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self.
Ernest Hemingway

doyle1950 #1456769 Wed Jun 29 2022 12:57 AM
Joined: Apr 2005
Posts: 3,054
If it is going to be a WORKING truck I'd follow specs but if a cruiser or show piece anything should work. Should be very easy to turn from a piece of 1" bar stock and don't worry about accurate to five places as the BUSHINGS can be honed on a Sunnen to correct clearance. One hour job. My centerless grinder went with the big shop but I still had they would be as accurate as the instrument doing the measuring.

doyle1950 #1457968 Fri Jul 08 2022 06:18 PM
Joined: Jan 2022
Posts: 243
I bought a king pin kit from Chevs of the 40s late last year for my '52 GMC 3/4 ton. Their part number is 601019. The web page did not have dimensions, so I e-mailed asking. The right answer came back, "The 601019 are .920 X 5 1/16 and the bushing is 1.06 OD"

I ordered


Fit just right.

... also ...

I have a used one time .921" reamer for rent. The guy at the machine shop says it worked great. I haven't done the left side yet, so I'll need it back. Price is $50 (gladly refunded when I get it back) + shipping.

Last edited by Bill Hanlon; Fri Jul 08 2022 06:34 PM.
doyle1950 #1461297 Wed Aug 03 2022 05:28 PM
Joined: Jul 2017
Posts: 25
If you guys are still looking, I ordered a kingpin set off of Rockauto for my 54 3800. It was a few years ago and I was able to get an AC Delco kit, I might have the part number still. They still offer one with a .921 pin that's being sold by Moog.

1954 Chevy 3800 Long Bed: ex-fire truck turned farmer's town run about turned 353T powered retirement project
1953 Chevy 6400: the work truck
doyle1950 #1461406 Thu Aug 04 2022 11:47 PM
Joined: Aug 2013
Posts: 265
Thanks, I'm satisfied with the set I ordered from Bill's Truck shop in Ontario.
Now to try to find a speedometer gear that will work with the upgraded 4:10 gears I just installed!

1950 Chevrolet 5-Window Canadian manufactured 1-Ton with Dump Bed / Hoist
In the Stovebolt Gallery
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You will never stop learning new things, no matter how old you are.
doyle1950 #1461407 Fri Aug 05 2022 12:05 AM
Joined: Jul 2000
Posts: 74
Regarding the speedometer gear mentioned by doyle1950, many years ago when I changed the differential gears in my 1958 1/2 ton panel truck (went from 4.11-1 to 3.80-1), I went to a local speedometer shop for help.

They calculated the gearing that I needed vs. what was in the truck from the previous gears (stock) and built me a little adapter that on one side screwed into the side of the transmission and on the other side accepted the speedometer cable.

That little adapter (a tiny gearbox in itself) made the speedometer read correctly. I was a very happy camper!

Cheers, Dean

Dean 'Rustoholic' Meltz

Lurch: 1927 1-Ton Chevy Cattle Truck
In the Stovebolt Gallery []
Old and ugly is beautiful! -- The Saga []
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Justin: 1928 Chevrolet AB Canopy Express
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Rustoholic #1461429 Fri Aug 05 2022 03:14 AM
Joined: Jan 2022
Posts: 243
Originally Posted by Rustoholic
That little adapter (a tiny gearbox in itself) made the speedometer read correctly. I was a very happy camper!

Back in the day GMC sold a wide variety of those adapters in the parts department. Here is the list:

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