what speedo gear
Thread Starter
Pro
Joined: Nov 2004
Posts: 575
Likes: 0
From: Nice Lake Ontario
what speedo gear
Guess I shoulda asked this question the same time I asked about gear selection 
Anybody know off hand what speedo gears I need to go from 410s to 336s in a 69 4sp car?
Anybody going to 410s pay the shipping & the gears coming outta my car are yours
Anybody know off hand what speedo gears I need to go from 410s to 336s in a 69 4sp car?
Anybody going to 410s pay the shipping & the gears coming outta my car are yours
Instructor
Joined: Dec 2004
Posts: 230
Likes: 6
From: Washington DC
I used this site to replace my speedo gear a few months.
http://www.jag-lovers.org/lumps/x/speedo.htm
I ended up using the small gear 18 teath with
3.36:1 rear
225/70 15 tires
4 speed.
http://www.jag-lovers.org/lumps/x/speedo.htm
I ended up using the small gear 18 teath with
3.36:1 rear
225/70 15 tires
4 speed.
Race Director
Joined: Jul 2004
Posts: 12,705
Likes: 329
From: Scottsdale Arizona
Originally Posted by mooneyd
3.36 divided by 4.10 = .82 multiply this by the number of teeth on the existing driven gear and this is the number of teeth you need for the new one.
Doc Rebuild has these gears available.
