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Mod | | | Forums66 Topics128,194 Posts1,057,264 Members48,466 | | 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!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jun 2014 Posts: 152 'Bolter | | 'Bolter Joined: Jun 2014 Posts: 152 | hi guys gears are worn on mine and the speedo is not working
i did a search but couldnt find any suppliers
does anyone have a set for sale?
dont care what ratio is i just need to get something
please send me a pm if you have a set or know of a supplier
thanks! mike
| | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 |
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Feb 2007 Posts: 435 'Bolter | | 'Bolter Joined: Feb 2007 Posts: 435 | Which gear you need? Drive gear or driven gear? | | | | | Joined: Apr 2015 Posts: 336 Shop Shark | | Shop Shark Joined: Apr 2015 Posts: 336 |
1959 3100 Apache Fleetside
| | | | | Joined: Jun 2014 Posts: 152 'Bolter | | 'Bolter Joined: Jun 2014 Posts: 152 | thanks guys
i need both driven and drive gears
to pass vehicle inpection in japan i need a working speedometer for rolling road speedometer test... just found out
ive been using a gps speedo up to now | | | | | Joined: Jun 2014 Posts: 152 'Bolter | | 'Bolter Joined: Jun 2014 Posts: 152 | are all the drive gears the same and only the driven gear needs to be changed to adjust speedometer? what i mean is will any driven gear work albeit wrong speed indicated with the original drive gear. my driven gear has 13 teeth and looks like http://drmike.smugmug.com/Other/Truck/i-2MXVVq6/Acant recall what the drive gear is yet as have to take it out but do remember its badly missing some teeth so needs replacing 1/2 ton 1949 4 speed I have access to a 15 teeth driven gear and a 4 teeth drive gear....will they work together? i dont care if the speed is wrong (i have to convert to km/h anyway) i just need a moving needle
Last edited by Drmike; 04/25/2016 4:39 AM.
| | | | | Joined: Apr 2015 Posts: 336 Shop Shark | | Shop Shark Joined: Apr 2015 Posts: 336 | My thoughts are they will work. I'd say if you are getting them from the same person, they most likely are a matched set out of the same transmission.
1959 3100 Apache Fleetside
| | | | | Joined: Jun 2014 Posts: 152 'Bolter | | 'Bolter Joined: Jun 2014 Posts: 152 | hi,
they arent from the same source unfortunately so not sure
Last edited by Drmike; 04/25/2016 10:02 AM.
| | | | | Joined: Jun 2014 Posts: 152 'Bolter | | 'Bolter Joined: Jun 2014 Posts: 152 | btw how do you guys usually take off the drive gear? any tricks
| | | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 | 1. The drive/driven gears are a matched set - matched to RPM-affecting features of the truck (rear-end-ratio and rear-tire diameter). 2. However, (I think) some sets of drive/driven gears might contain one gear that is shared with another set. I dimly recall someone posting a gear-set parts list that showed part numbers for different combinations (I will try a search, but the info might have been posted in another discussion board). I think the drive can be carefully punched/pressed off the forward yoke for the u-joint (I have only done it once - for my 1954 Suburban). added later - not the charts I referred-to above: Master Parts Catalog: Group 4.337 (and more parts in 3.338)
Last edited by tclederman; 04/25/2016 12:14 PM. Reason: CMP&AC info added
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