Click on image for the lowdown. 
====
| | | Forums66 Topics128,068 Posts1,055,882 Members48,428 | | Most Online14,466
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!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Apr 2008 Posts: 44 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2008 Posts: 44 | Well I was at a local swap meet, and found a Zenith carb in fairly good rebuildable condition for $10. It was cheap enough, so I picked it up in the hopes it would be correct for my '49 GMC 100, w/228. I already have a couple Carters, but would like to be as original as possible.
If anyone could help me ID this carb, and whether or not it's correct for the truck, it would be greatly appreciated.
Numbers on round metal tag:
-Outer: 163285
-Inner: 133409 (the last digit here was difficult to make out)
Other markings beside "Zenith - Made In U.S.A." are as follows:
-LR4-16 adjacent to the float bowl
-173 on the bottom flange
Any help or leads are appreciated. I've heard the folks over at Zenith are very helpful, so I may try e-mailing them tomorrow.
Thanks! | | | | | Joined: Jan 2008 Posts: 4,961 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,961 | I don't find that number in GMC books. Zenith was used in many industrial as well as military applications. Does it have the idle adjustment down low at 45 degrees or up higher horizontal. The horizontal is a 28 series, the 45 degree is a 228 series. | | | | | Joined: Apr 2008 Posts: 44 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2008 Posts: 44 | What exactly is the difference between "a 28 series", and "a 228 series"? Or is that a typo? I was on oldgmctrucks.com and my carb looks exactly like this: www.oldgmctrucks.com/photos/AcceleratorControlSchematic.jpgI will check whether the idle adjustment is horizontal or canted 45 degress, in a couple hours when I'm in the garage, and will post with my update. | | | | | Joined: Apr 2008 Posts: 44 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2008 Posts: 44 | Right, so I've been busy rearranging things in the garage all evening, BUT
I took a good look at the carb, the idle adjustment screw is 45 degrees. So, it's a 228 series? Jackpot? | | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | According to this web site a 163285 Zenith is for a Hyster fork lift. | | | | | Joined: Apr 2008 Posts: 44 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2008 Posts: 44 | I just searched that page, and there was only one match for 163285, a Hyster forklift, but 163285 was the customer number. | | | | | Joined: Apr 2008 Posts: 44 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2008 Posts: 44 | Wait, no. You were right cletis, it's for a forklift.
Well, anyone want to buy a carb? Haha. | | |
|
|
