Speedo gear for 3550

[nick6690]

I have a 3550 and I'm about to switch from 3.73's to 4.10's and I'm not too sure what speedo gear to get but I'm pretty sure it's the white 23 tooth one.
Is this correct? 83-95 Mustang 23 Tooth Speedometer Gear & Clip Kit, Manual Trans by 50resto at LRS - Same Day Shipping!
I have 245/50/16 tires if that makes any difference.

 

[nick6690]

anyone?

 

[HotFox]

OK I think you will be fine with the 23 tooth (white) that 3550 should have a 7 tooth in the transmission. I had that in mine and found that the 23 tooth were braking at the base of the teeth, it did not hurt the the inside gear but going to a smaller gear might be something to keep in mind as that combination may not last as long (from my research the 7/23 were not the best combination for mesh).

I bought a mechanical adaptor so it will read right with 4.56:1 gears. There are several sites that you can put your drive or driven gear and tire size or dia. with the rear ratio and will spit out the gear required.

Just a random search based on your information it is a 22.118 tooth which they do not make so you can go to a 23 or a 21 tooth. Looks like either way you will have a slight error.

Speedo Gear Selection

Scott

 

[nick6690]

thanks a lot man