speedometer gears
 

I need to know what the factory speedo gear is for auto with a 2.70 rearend gear?any help will be greatly appr.

They used a red gear for the 3.08 ratio. I don't know if there's another step from that, though.

I bought this car without the tranny and the cable was missing the gear just trying to figure it out.thanks

You could use the red gear, just keep in mind that you'll be going a little faster that your speedo says. Probably only a couple - few mph's.

Thats probably what I will do until I get another gear thinking about a 4.10 any sugestions

4.10 is a little tall for a stock 5.0 - unless you plan on upgrades soon. I went with the 3.73 and am very happy. With the 3.73's I used a white gear which is said to be used for ratio's between 3.55 & 4.10 - If memory serves me right, a white speedo gear has 21 teeth.

I agree. Your powerband needs at least another 1500 rpm before going to 4.10's

I have a e303 cam ,2500 stall,and a 1 inch plenoum spacer . none of it is in stalled yet got it today tradin around

4.10's should suit you nicely then. Unless of course you do a lot of highway driving. Get a bigger intake like a Pro-Products, Edelbrock, Trick-flow, etc. and you'll really be happy!

If you hae a Ford Motosports catalog, it has a table in it that shows all the different speed-o gears (tranmission driven and drive) along with the rear end gear.

I have one at home, so I can post later unless someone beats me to it.