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Joined: Nov 2017
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J
'Bolter
'Bolter
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Has anyone ever put a 1946 Chevy COE cab on a 2000's Sierra 3500HD chassis?

Joined: Dec 2015
Posts: 2,061
Big Bolt Forum Moderator
Big Bolt Forum Moderator
Joined: Dec 2015
Posts: 2,061
welcome to the site! Make sure to post in the welcome wagon and introduce yourself and your truck!
My trucks are newer so, I am not real familiar with your year (nor the COE) but, there are a number of threads on here talking about older cabs on newer frames, COEs included.



Mike
1955 Chevy 6400 ex-flatbed (no bed now!) sold September 2023
In the Stovebolt Gallery
1958 Chevy 6400 flatbed W/dump
In the Stovebolt Gallery
1959 Chevy Suburban Owned for almost 20 years, Daily Driver -- sold May 2016
In the Stovebolt Gallery

Sufficient unto the day is the evil thereof
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The front axle will be noticeably wider, have you measured how far the wheels will stick out the fenders, and if you can live with that or do something about it?


1951 GMC 250 in the Project Journals
1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-
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C
'Bolter
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When I first joined Stovebolt there was a bolter on here, Sublime , was his handle, that put a 1/12 ton body on a full size frame. I was fascinated with his skills. He widen his fenders by cutting them
down the middle and adding 4". Here is his gallery picture.. Maybe will help in your decision. Have fun and good luck
Dan

Joined: Jul 2016
Posts: 26
5
Wrench Fetcher
Wrench Fetcher
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Posts: 26
I"m working on similar project now, 48 GMC 5 window COE on a 2500 HD Duramax. I will be setting the cab later this winter which will answer a lot of questions going through my head. Or it just might put a lot more questions up there???????

Joined: Aug 2003
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Y
Shop Shark
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Posts: 106
I have a 55.1 450 GMC COE going onto an 88 Chevy 3/4 ton 4wd chassis. The cab is mounted and the bed is created. Steering was functional but I didn't like the angles so I'm going to use a Steer Clear steering column offset to improve steering geometry. I know that the cabs have gotten wider with each vintage body style. I think you'll find that the 46 would be quite narrow for the 2000+ chassis. On that note anything can be overcome. It just depends on how hard you want to overcome the the issues. Some of the issues you'll need to overcome:

1) Track width - Tires sticking out too far from the body.
2) Body height - Are you lowering the truck or keeping a taller ride height?
3) Cab intrusion - How willing are you to have the engine intrude above the cab floor?
4) Bed length - If you're using 4wd the bed length will have to be longer than if you run 2wd.
5) Steering column to box geometry - The short length of the cab/hood makes for steep alignment of the steering joints.
6) Insert more issues here.
7) Adopt a shop motto like mine - "I always win." That will provide motivation to overcome the struggles.
8) Theory - Planning - Testing (at wrecking yard) - THEN purchase frame to actually follow through on your theory.



"I always win." Working mainly alone I do not let my trucks win a war. Maybe a battle here and there but never the war.

Robert
55.1 GMC 450 COE
51ish GMC Suburban
Joined: Jul 2004
Posts: 2,946
R
'Bolter
'Bolter
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Originally Posted by Chev4t6
When I first joined Stovebolt there was a bolter on here, Sublime , was his handle, that put a 1/12 ton body on a full size frame. I was fascinated with his skills. He widen his fenders by cutting them
down the middle and adding 4". Here is his gallery picture.. Maybe will help in your decision. Have fun and good luck
Dan

I remember Sublime also. His workmanship was outstanding. But his was a conventional cab, not a COE.


Rich
1947 Loadmaster
1947 Chev. Loadmaster
1959 Chev. Viking 40

Life is short--eat dessert first!
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M
'Bolter
'Bolter
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The link posted above to Sublime's Gallery Photos didn't work for me, so here it is again.

https://www.stovebolt.com/gallery/watts_stuart_1946.htm

Mike B smile


Mike Boteler

1956 Chevy 3100 Resto Rod
1956 8400 Wrecker w/Holmes 525
1956 9200 Tractor w/Allison Automatic
1952 Willys M38 Army Jeep
1953 Willys M38A1 Fire Jeep
1978 Jeep CJ-5 Navy Jeep
1984 Jeep CJ7
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E
Crusing in the Passing Lane
Crusing in the Passing Lane
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Joined: Jun 2011
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GMC made wide front fenders for '41 to '47 conventional trucks(I have several), might be less work? than widening stock fenders.

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.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.

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