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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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Aug 2016 Posts: 2 Moderated | | Moderated Joined: Aug 2016 Posts: 2 | Hey guys,
im new here and i will have many questions about my 39' GMC. Just to give you a little background on this truck, i had in inherited this GMC from my father who passed away 20 some years ago and who knows how many more years it sat in the rain before he passed. I know nothing about trucks and i have decided to restore this one to a drive-ability condition. Im not looking to do a complete restoration as the cost would be to great, but just simply to get in running on the road.
My main question for now is to know about the engine and what kind of motor do i have? Is it the original motor or a later year? How can i tell what engine it is?
Also, i have taken pictures of the engine, but im not sure if im able to post them here.
Thanks!!
GMC 1939 1/2 Ton
| | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | Welcome to Stovebolt, Sonny. First off, I'm sure your truck is a half ton, not quarter ton.
The best way to ID the engine is by the numbers cast into the block.
Images must be hosted elsewhere and linked to here, as described in the 'Image Posting Policy' linked to at bottom left of this page. | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Is it a flathead or OHV? Engine SN? SN is stamped on starboard side, in casting number by starter.
Ed
Last edited by EdPruss; 08/03/2016 2:29 AM.
'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: Dec 2015 Posts: 2,063 Big Bolt Forum Moderator | | Big Bolt Forum Moderator Joined: Dec 2015 Posts: 2,063 | welcome to the site! Looking forward to seeing some pics when you get them linked. | | | | | Joined: Mar 2003 Posts: 315 'Bolter | | 'Bolter Joined: Mar 2003 Posts: 315 | The original engine for your truck would have been a 228 overhead valve engine, inline 6. There is a lot of good info on this site as well as the http://oldgmctrucks.infopop.cc/eve site. | | | | | Joined: Aug 2016 Posts: 2 Moderated | | Moderated Joined: Aug 2016 Posts: 2 | Thanks guys! I will look into the engine and figure out what it is. Also how to i link pictures to this forum??
GMC 1939 1/2 Ton
| | | | | Joined: Apr 2005 Posts: 7,441 Bolter | | Bolter Joined: Apr 2005 Posts: 7,441 | Look at the bottom left margin of this page for the photo posting policy and instructions. 
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
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| | | | | Joined: Oct 2002 Posts: 4,066 Bolter | | Bolter Joined: Oct 2002 Posts: 4,066 |
Redryder pixMy HotrodA veteran - whether active duty, retired, national guard, or reserve - is someone who, at one point in his or her life, wrote a blank check made payable to The 'United States of America', for an amount of "up to and including my life."I am fighting cancer and I am winning the fight | Pain is part of life; misery is an option. | | | | | Joined: Aug 2005 Posts: 6,378 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,378 | Also how to i link pictures to this forum?? Guys, Fred's link and the link on the bottom left are to the image policy, not the "how to". Here is the how to.
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| | | | | Joined: Mar 2011 Posts: 457 Shop Shark | | Shop Shark Joined: Mar 2011 Posts: 457 | Welcome Sonny! Looking forward to some pics when you get that set up. Ken
1940 Chevy 1/2 ton pickup "KC"
A day without sunshine is like, well, ..... dark!
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