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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Oct 2020 Posts: 43 'Bolter | | 'Bolter Joined: Oct 2020 Posts: 43 | Hello,
Not sure where to ask this Q?
How do I tell a one ton chassis from a one and 1/2 ton chassis?
Assuming I'm looking at a rolling chassis, no sheet metal, model numbers, etc.
Seller says it's a one ton, no reason to doubt, except I want to try to be sure.
I know to measure wheel base first. If it's 137, then what next, 8 vs. 11 leaf springs?
Thanks for any help anyone can offer. Mike. | | | | | Joined: Sep 2010 Posts: 1,700 back yard wrench turner | | back yard wrench turner Joined: Sep 2010 Posts: 1,700 | Hello,
Not sure where to ask this Q?
How do I tell a one ton chassis from a one and 1/2 ton chassis?
Assuming I'm looking at a rolling chassis, no sheet metal, model numbers, etc.
Seller says it's a one ton, no reason to doubt, except I want to try to be sure.
I know to measure wheel base first. If it's 137, then what next, 8 vs. 11 leaf springs?
Thanks for any help anyone can offer. Mike. Mike 1st we need to know what year you are asking about. The spec manuals are here, look up the year of the truck you are asking about. http://chevy.oldcarmanualproject.com/index.htm
Wayne1938 1-Ton Farm TruckStovebolt Gallery Forums1989 Silverado 1996 Mustang GT convertible When I die, I hope she doesn't sell everything for what I told her I paid for it! | | | | | Joined: May 2015 Posts: 10,997 Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums | | Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums Joined: May 2015 Posts: 10,997 | This site is a little easier to find the info in. It has info on wheelbase, springs, etc.
Kevin 1951 Chevy 3100 work truckFollow this saga in Project JournalPhotos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together. | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Do you know if Chevy or GMC? ‘41-‘47 GMC one ton would have 6 on 7.25” wheels, GMC engine. 1.5ton would have 20” wheels. All GMC engines are different from Chevy if present.
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.
| | | | | Joined: Oct 2018 Posts: 97 'Bolter | | 'Bolter Joined: Oct 2018 Posts: 97 | 3/4 and 1 ton GMC's would have the rear axle under the rear leaf spring, the 1/2 ton would have the axle on top of the rear leaf spring. The 3/4 and 1 ton GMC rear frame is narrower than the 1/2 ton GMC. Over all frame would be longer on the 3/4 and 1 ton GMC's unless the 1/2 ton was ordered with a longer bed. Regardless the 3/4 and 1 ton GMC's frames are narrower than the 1/2 tons. 3/4 ton GMC's have 16" wheels in 1946, Chevy 15" in 1946, both 8 hole.
Last edited by msmall; 08/07/2021 7:59 PM.
1946 with WWII 270
| | | | | Joined: Oct 2020 Posts: 43 'Bolter | | 'Bolter Joined: Oct 2020 Posts: 43 | Hi,
I asked about the year, and gmc vs chevy, and he wasn't sure. He said he would check and might have the info, but I wouldn't bet on it.
I think the wheels and engine are gone, and he won't have info on either. He assured me it was indeed an advanced design model, one ton,
1950 to 1953. This is a bare chassis. He said the front was intact, and the axles were off in the rear. Probably all I have to work with other
than seeing it, and measuring what ever I can. Thanks for the responses! It's 100 miles away, but that seems to be as close as I can find! | | | | | Joined: Mar 2004 Posts: 6,212 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,212 | Here's where a picture would really help...  1-ton will be 8 lug F & R... 1-1/2 ton will be 10 lug rear/5 lug front Mike B  | | |
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