« previous next »
Pages: [1]   Go Down

Author Topic: Speedometer Gear Housing - What do I need?  (Read 2048 times)

Offline hladkib

  • Newbie
  • Posts: 28
  • I liek trucks
Speedometer Gear Housing - What do I need?
« on: August 29, 2023, 07:39:32 am »
Hey All,

Long time lurker.

I'm trying to find the correct speedometer gear housing, but I have failed twice to order the incorrect part.

I have a 700r4 and want to update the drive gear to correct my speedometer. I did all the math and calculations and have found that I need a 44-tooth drive gear.  I have ordered a part from Summit, having to wait months for it to arrive only to find that the OD of the housing is incorrect. I found one on eBay it promptly arrived and that is the wrong size.

My question is: What speedometer housing do I need? My current speedometer gear housing measures 1.93" and the ones I ordered are 2.07"

Summit Part
https://www.summitracing.com/parts/TCI-880023

Ebay Part
https://www.ebay.com/itm/175116843392
Logged

Offline VileZambonie

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 19136
Re: Speedometer Gear Housing - What do I need?
« Reply #1 on: August 29, 2023, 05:55:35 pm »
Install it without the seal and see if it fits. If it does the housing is probably crusty.
Logged
,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline MIKE S

  • Registered Users
  • *
  • Posts: 225
  • Member
Re: Speedometer Gear Housing - What do I need?
« Reply #2 on: August 29, 2023, 09:48:47 pm »
2.07 is correct for a 700r4 with a mechanical speedometer. Is it possible that you are using a tail shaft housing for a 700r4 designed for an electronic speed sensor? 
Logged
Pages: [1]   Go Up
« previous next »