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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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For helping keep this great
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on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Sep 2006 Posts: 127 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2006 Posts: 127 | make 4 wheel drive? There is a dude claiming to have a factory gmc 4x4 from 1956... is he pulling shennanigans? http://cosprings.craigslist.org/car/392188990.html please forgive me for the craig's list... I needed to show the add to find the truth..
"I'd rather have a bottle in front of me than a frontal lobotomy." -D. Parker 1951 Chevy 3100 | | | | | Joined: Nov 2005 Posts: 144 Shop Shark | | Shop Shark Joined: Nov 2005 Posts: 144 | Take a look at this website to get the full story on that NAPCO 4x4. | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | Yup, 1956. GMC also offerd a few options that the Chevrolets did not offer until the '60 model year or later. Namely, a V8 engine and an automatic tranny.
Bill Burmeister
| | | | | Joined: Dec 2004 Posts: 1,897 Shop Shark | | Shop Shark Joined: Dec 2004 Posts: 1,897 | If it is a factory 4wd it will have "NAPCO" stamped in 1 inch raised letters on the front axle. It may also have a spicer 23 transfer case. Many of the factory 4wd trucks also came with the very rare power steering option. | | | | | Joined: Sep 2006 Posts: 127 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2006 Posts: 127 | chevy did offer a 56 with a 235 and a 3 speed auto..
my buddy has one... it has badges on it that say hydromatic..
thanks guys..
"I'd rather have a bottle in front of me than a frontal lobotomy." -D. Parker 1951 Chevy 3100 | | | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 | I think (but am not sure) that the 1956 truck Hydra-Matic transmission was a four speed automatic transmission (as it was in 54/55 Chevrolet trucks). | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | Yes, the Hydra-Matic in the '50s Chevies and GMCs was a 4 speed. First offered in '53 on GMC (first automatic in a truck) and '54 on Chevrolet. GMC was the first to offer an auto with 4 wheel drive, in '56. Chevrolet didn't offer an automatic trans w/4 wd until '68. Also, the V8 option w/4wd wasn't offered on a Chevy until '60. Some other differences, GMC offerd 4x4 on all models, including the long 1/2 ton, Chevy didn't until '61. GMC also offerd a factory/dealer installed Chelsea PTO w/Spicer drivetrain and a 5 ton Breaden winch, Chevrolet didn't have that, either. GMC offered that option up to at least '70.
Bill Burmeister
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