|
Register or Log In To remove these advertisements. |
|
|
|
|||||||
|
|
Thread Tools | Display Modes |
12-19-2022, 02:36 PM
|
#15 |
|
Registered User
Join Date: Nov 2000
Location: Carver County, Minnesota, USA
Posts: 627
|
Re: Factory NP205 speedometer setup
I did some googling the the adaptor part numbers shown in the 72TL parts book previously posted.
In later year parts books they list the missing info: the ratio and the associated stamp code that's missing from the 72TL parts book. Assuming no changes in the GM part numbers or tooth counts up through the 80's, this is what I have found for the ratios and stamp codes. See attached pic's. I cannot find any details on 3925671 which is not specified much. For the NP205, 3.07, H78-15B tires you need adaptor: 3950348 1.2020X (on/off road) -or- 3950350 1.3000J (highway) as marked in red in the first picture. There is a seller on the parts board selling the 1.2020X http://67-72chevytrucks.com/vboard/s...d.php?t=840267
__________________
72 Chev C-10 90% restored (former AZ truck) ... 71 Chev K-20 Cheyenne my vacation crusier... 72 Chev C-10 Now retired and striped after many faithful miles... 72 GMC 1500 Retired to the junk yard after bought new in '71... |
|
|
| Bookmarks |
|
|
Threaded Mode