Speedometer gear replacement?
Thread Starter
Instructor
Joined: Jul 2006
Posts: 119
Likes: 0
From: Renton WA
Speedometer gear replacement?
Hey guys,
Im trying to find a part # in my paragon catalog to replace the speedometer GEAR, but Im not having any luck.
I bought the gear fitting with the O-ring (part #7188k at paragon), but it turns out that wasnt it.
The piece I need is shown on the diagram on page 18, looks like it slides into the gear fitting and is shaped like a screw with gear-teeth on top of it, but I can't for the life of me figure out what it's called or where to buy it.
Help appreacited.
Im trying to find a part # in my paragon catalog to replace the speedometer GEAR, but Im not having any luck.
I bought the gear fitting with the O-ring (part #7188k at paragon), but it turns out that wasnt it.
The piece I need is shown on the diagram on page 18, looks like it slides into the gear fitting and is shaped like a screw with gear-teeth on top of it, but I can't for the life of me figure out what it's called or where to buy it.
Help appreacited.
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Originally Posted by wxw116
Hey guys,
Im trying to find a part # in my paragon catalog to replace the speedometer GEAR, but Im not having any luck.
I bought the gear fitting with the O-ring (part #7188k at paragon), but it turns out that wasnt it.
The piece I need is shown on the diagram on page 18, looks like it slides into the gear fitting and is shaped like a screw with gear-teeth on top of it, but I can't for the life of me figure out what it's called or where to buy it.
Help appreacited.
Im trying to find a part # in my paragon catalog to replace the speedometer GEAR, but Im not having any luck.
I bought the gear fitting with the O-ring (part #7188k at paragon), but it turns out that wasnt it.
The piece I need is shown on the diagram on page 18, looks like it slides into the gear fitting and is shaped like a screw with gear-teeth on top of it, but I can't for the life of me figure out what it's called or where to buy it.
Help appreacited.
Thread Starter
Instructor
Joined: Jul 2006
Posts: 119
Likes: 0
From: Renton WA
thanks
Now how the heck do I know which one I need? 
Dont have the old one anymore.
car is a 4spd 1974 454 vert.
For the record, the gear fitting @ ecklers is $13 and @ paragon it's $23. Oops.
Dont have the old one anymore.
car is a 4spd 1974 454 vert.
For the record, the gear fitting @ ecklers is $13 and @ paragon it's $23. Oops.
Drifting
Joined: Jan 2006
Posts: 1,832
Likes: 36
From: Cedar,BC
Why not try your local transmission shop?They probably have a box or two of them sitting around and may even give away one or two if you ask nicely enough!If you are lucky you may run into one of the old timer's that has a clue and could recommend a gear that should work.
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Originally Posted by wxw116
Now how the heck do I know which one I need?
Dont have the old one anymore.
car is a 4spd 1974 454 vert.
For the record, the gear fitting @ ecklers is $13 and @ paragon it's $23. Oops.
Dont have the old one anymore.
car is a 4spd 1974 454 vert.
For the record, the gear fitting @ ecklers is $13 and @ paragon it's $23. Oops.
Thread Starter
Instructor
Joined: Jul 2006
Posts: 119
Likes: 0
From: Renton WA
thanks for the help so far guys
The car is totally stock, so I think the right numbers are on the plate on the shifter console:
454, 395 lbs. ft of torque, 8.25:1 ratio.
Tires are firestone wide ovals, g70-15
That the info you needed?
Thanks again all.
454, 395 lbs. ft of torque, 8.25:1 ratio.
Tires are firestone wide ovals, g70-15
That the info you needed?
Thanks again all.
Burning Brakes
Joined: Feb 2001
Posts: 929
Likes: 5
From: Marietta GA
There is a website that has a software utility that will tell you how many teeth your driven gear needs to be. I can't remember the name of it but I believe you need the number of teeth on the drive gear (the one inside the tranny that meshes with the plastic one), as well as the rear end ratio.
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Originally Posted by wxw116
The car is totally stock, so I think the right numbers are on the plate on the shifter console:
454, 395 lbs. ft of torque, 8.25:1 ratio.
Tires are firestone wide ovals, g70-15
That the info you needed?
Thanks again all.
454, 395 lbs. ft of torque, 8.25:1 ratio.
Tires are firestone wide ovals, g70-15
That the info you needed?
Thanks again all.
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Advanced
Joined: Aug 2006
Posts: 90
Likes: 0
From: Cumming GA
I'm actually in the process of replacing mine this weekend- going to get the piece from a chevy dealership- they will order and have next day or you can get lucky and they'll have in stock- yeah, that's me...$5 to $11 for what you need-depending on the dealership. And you are saying it right. Hope this helps.
Drifting
Joined: Jan 2006
Posts: 1,832
Likes: 36
From: Cedar,BC
I know I saw it somewhere,my 73 assembly manual has a chart for drive and driven gears.The drive gear(on the output shaft of the trans) should have 8 teeth(manual trans) and the driven gear will vary on the diff. ratio.If you can tell me what rear gear you have,I can tell you what the chart says.
