How do I know what gear ratio My 9 inch Ford?

Count the number of teeth on the crown wheel, and divide by the number of teeth on the pinion. That is your ratio. That is the best method.. The ratio is also usually stamped on the top side of the ring gear just to double check that your math is correct.

What is a Ford 9 inch bolt pattern?

Ford 9″ Axle Shafts – Torino Flange – GM 5 x 4.75 Bolt Pattern – (1967-70 Mustang) – Pair. 31 spline axles are built to withstand extreme use.

How much horsepower can a Ford 9 inch handle?

Like red91xlt just mentioned its also the question of tires. Sure a 9 inch can handle 400+ horse in a car.

What makes a Ford 9 inch so good?

But what makes the Ford “better”? Besides an inherently large ring-gear diameter (bigger than all competitive passenger-car performance rearends, except the massively heavy and relatively rare 9-inch Dana 60), the Ford’s biggest strength advantage over competitive rearends is its greater hypoid distance.

Which axle is longer on a Ford 9 inch?

If you have the same length axles on a 9″ Ford, your pinion is offset to the right approximately 2 1/8″. If you have one 9″ Ford axle that is longer than the other by 4 1/4″, you have a centered pinion.

What lug pattern is a 9 inch Ford rear end?

Ford 9″ Axle Shafts – Torino Flange – Ford 5 x 4.5 Bolt Pattern – (1964.5-66 Mustang) – Pair.

Can you replace just the pinion gear?

Yes. Ring and Pinion gears come in matched sets and must be replaced at the same time.

How do I know if my pinion gear is bad?

Regular “clunking” or loud “clicking” every few feet may indicate a broken ring or pinion gear tooth. “Banging, clicking or clunking” while cornering can be caused by broken cornering gears commonly called “spider gears”, lack of sufficient positraction lubrication, or worn positraction clutches.

What’s the best gear pattern for a Ford 9?

Maybe drop the lash to a “loose” .007 or a “tight” .008? Anything over 4.11 seems to live longest and run most quiet if it slightly favors the toe, or lower on the tooth, with as wide a pattern as you can get. As you lay into it the pattern will actually spread up toward the heel end under heavy load.

How to install gear in a Ford truck?

Skip 9, 10 And 11 If You Are Seasoned Gear Installer. 9. Install Dial Indicator As Shown. Make Sure Dial Indicator Is Extremely Rigid, Or Results Will Be Skewed. Ensure Dial Pointer Is Set So It Touches The Top Of One Gear Tooth And Is Tangent To The Outer Arc Of Ring Gear Teeth. Hold Pinion Flange Solid And Rotate

What’s the proper ring and pinion gear pattern?

Ring and Pinion Gear Pattern is one of the most valuable tools for determining if a differential is properly set up. The images below illustrate both acceptable and unacceptable ring and pinion gear patterns.

What to look for when setting up rear gear?

With the pinion gear and differential in place, rear-end marking compound in place, and with the bearings only “snug” (just tight enough to eliminate any “play”), check the pinion depth by way of the contact pattern that can be found by the rotation of the pinion against the ring gear.