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How's it going guys. I got a 87 K-case truck 700R4. My speedometer started to jump and ended up failing to register speed. So I removed the speedometer housing and found that the driven gear was shredded. That said, the new 39 tooth driven gears are entirely plastic. Will these work in place of the oem metal shaft driven gear? Thanks in advance.
There are 2 different configurations for those Speedometer Gear Sets and Housings:
-The Plastic Driven-Gear is a separate Part, that is installed on a Steel-Shaft, within a Plastic Housing.
-OR-
-The Plastic Driven-Gear is a One-Piece Part with a Plastic-Shaft, within an Aluminum Housing.
If you are going to use a One-Piece Driven-Gear (Plastic-Shaft), then you will need an Aluminum Housing.
There are 2 variations for each type of Speedometer Gear Housings (Plastic or Aluminum) produced:
-A 39-Tooth and lower Tooth count Housing.
-OR-
-A 40-Tooth and higher Tooth count Housing.
Of course, you would require the 39-Tooth and lower Housing.
Last edited by vorteciroc; May 10, 2022 at 10:47 PM.
There are 2 different configurations for those Speedometer Gear Sets and Housings:
-The Plastic Driven-Gear is a separate Part, that is installed on a Steel-Shaft, within a Plastic Housing.
-OR-
-The Plastic Driven-Gear is a One-Piece Part with a Plastic-Shaft, within an Aluminum Housing.
If you are going to use a One-Piece Driven-Gear (Plastic-Shaft), then you will need an Aluminum Housing.
There are 2 variations for each type of Speedometer Gear Housings (Plastic or Aluminum) produced:
-A 39-Tooth and lower Tooth count Housing.
-OR-
-A 40-Tooth and higher Tooth count Housing.
Of course, you would require the 39-Tooth and lower Housing.
awesome. Thank you for the tip. Off to buy the plastic driven and a new aluminum housing.
There are 2 different configurations for those Speedometer Gear Sets and Housings:
-The Plastic Driven-Gear is a separate Part, that is installed on a Steel-Shaft, within a Plastic Housing.
-OR-
-The Plastic Driven-Gear is a One-Piece Part with a Plastic-Shaft, within an Aluminum Housing.
If you are going to use a One-Piece Driven-Gear (Plastic-Shaft), then you will need an Aluminum Housing.
There are 2 variations for each type of Speedometer Gear Housings (Plastic or Aluminum) produced:
-A 39-Tooth and lower Tooth count Housing.
-OR-
-A 40-Tooth and higher Tooth count Housing.
Of course, you would require the 39-Tooth and lower Housing.
