TCCoA Forums banner

1 - 6 of 6 Posts

·
Registered
Joined
·
61 Posts
Discussion Starter #1
I'm putting 355's in my 91 sport,the speedo gear calculator at sccoa site says I need a 22 tooth gear but I only see them as large as 21.My tires are 235/60/15.If I put a 21 in would my speedo be off by a great deal?Thanks
 

·
Administrator
Joined
·
8,059 Posts
I know you need the orange gear, not sure how many teeth it has though.

Moving to Drive Train.

Joe
 

·
The Parts Guy
Joined
·
7,330 Posts
With the 21 tooth (purple) gear, your speedometer readings will be off by 4.39% if I've done my math correctly.

So, for instance, at 60 MPH, your speedometer would read 62 MPH.

You can get the gears at your local Ford dealership.

-Rod
 

·
Premium Member
Joined
·
1,371 Posts

·
Registered
Joined
·
61 Posts
Discussion Starter #5
Thanks guys,I'll check out ford and throw those gears in.I'm looking forwad to the extra get up and go.
 

·
Registered
Joined
·
1,143 Posts
My '93 AOD had a 7 tooth output shaft from the factory. Yours may have an 8 tooth or a 7 tooth. Kinda hard to count with the tailshaft on.
 
1 - 6 of 6 Posts
Top