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#64240 08/11/2006 3:19 PM
Joined: Feb 2004
Posts: 336
B
Shop Shark
Shop Shark
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Joined: Feb 2004
Posts: 336
Hello All
I need help locating a speedometer cable gear, I have a 66 with a NP435 trans with a 4:10 posi. When I bought the truck the gear was missing and I talked to some people to find a new one but they all ask what color is the gear and how many teeth are on it. Unfortunately I cant answer that question, so im stuck in the mud on this one.

By the way I took of the cap that holds the cable, and I took off the L shaped unit from the trans that connects the cable to the trans.

Much appreciation for any help

#64241 08/11/2006 4:16 PM
Joined: Feb 2004
Posts: 336
B
Shop Shark
Shop Shark
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Posts: 336
The P/O said it was an SM420, but I was looking in the shop manual and according to the shift pattern it is a NP435

#64242 08/12/2006 9:44 PM
Joined: Jun 2004
Posts: 8,597
W
Riding in the Passing Lane
Riding in the Passing Lane
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Joined: Jun 2004
Posts: 8,597
The New Process trans is bascicaly a Mopar product. It has an aluminum cover. You might find the gear at a Dodge dealer or a truck trans. parts dealer. You will probably have to guess at the tooth count first & try it. Match the odometer reading with the mile markers on the freeway to tell how mutch off it is. You can try it with & without the "L shaped unit" which is a ratio adapter that the factory uses to calibrate the speedo. Also if the ratio adapter is oppisite of what you need I have taken the little gears out 7 reversed them.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
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#64243 08/15/2006 7:14 PM
Joined: Feb 2004
Posts: 336
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Shop Shark
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Joined: Feb 2004
Posts: 336
I think I need a 4 or an 11 tooth.

#64244 08/15/2006 9:58 PM
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Posts: 336
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Shop Shark
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I guess this is definitely a "chump stumper" question.


Moderated by  Phak1, Woogeroo 

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