Another Speedometer gear Question
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Mountain Pass
Joined: Apr 2018
Posts: 213
Likes: 3
Another Speedometer gear Question
Original rear end gear was 2.72 with a Dana 44
New rear gear is 3.5 in a 9 inch
I swapped the trans as well from the original C6 to another C6 from a 77 Econoline. The trans tag is missing on the 77 C6 otherwise I would give out that info to decode as well.
I have the original Type 2 (Long Snout) 18T GRAY DRIVEN gear on there and the speedo is about 15-20 MPH off
Can I use a Type 2a as well?
Tire Size is 28 inch in diameter or a 275/60/15 with 720 RPM
Did I miss any info?
Thanks
New rear gear is 3.5 in a 9 inch
I swapped the trans as well from the original C6 to another C6 from a 77 Econoline. The trans tag is missing on the 77 C6 otherwise I would give out that info to decode as well.
I have the original Type 2 (Long Snout) 18T GRAY DRIVEN gear on there and the speedo is about 15-20 MPH off
Can I use a Type 2a as well?
Tire Size is 28 inch in diameter or a 275/60/15 with 720 RPM
Did I miss any info?
Thanks
Lead Driver
Joined: Mar 2008
Posts: 7,173
Likes: 377
From: Near Los Angeles
There is a site that specializes in cable ends and adapters. I had their web address for a while, but now it's gone. That site explained the diff. color speedo gears, and they had them all. The less teeth the gear has, the faster your speedo reads. You can also find the gears on ebay.
Thread Starter
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Mountain Pass
Joined: Apr 2018
Posts: 213
Likes: 3
There is a site that specializes in cable ends and adapters. I had their web address for a while, but now it's gone. That site explained the diff. color speedo gears, and they had them all. The less teeth the gear has, the faster your speedo reads. You can also find the gears on ebay.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 784
From: Simi Valley, CA
TYPES 1 - 2 - 2A = Teeth run this-away: /////
TYPE 2B = Teeth run that-away: \\\\\
Nylon speedometer DRIVEN gears are available with 16 thru 21 teeth, same gears have been used since 1960, are available from Ford and auto parts stores
TYPE 2B = Teeth run that-away: \\\\\
Nylon speedometer DRIVEN gears are available with 16 thru 21 teeth, same gears have been used since 1960, are available from Ford and auto parts stores
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Mountain Pass
Joined: Apr 2018
Posts: 213
Likes: 3
Do you know why they have different snout lengths?
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 784
From: Simi Valley, CA
DRIVEN gears do not interchange due to how the teeth are orientated.
You cannot use a gear with teeth like this: /////in place of gear with teeth like that: \\\\\
You cannot use a gear with teeth like this: /////in place of gear with teeth like that: \\\\\
Thread Starter
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Mountain Pass
Joined: Apr 2018
Posts: 213
Likes: 3
I was referring to the type 2 and 2a are interchangeable due to their tooth orientation if I understand you correctly. I understand that the 2b are not the same because they have the opposite tooth orientation.
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