Need help with wheel spacers?

Reply Subscribe

Thread Tools

Search this Thread

Apr 27, 2010 | 11:43 AM

#16

dkf

Hotshot

Joined: Mar 2007

Posts: 10,101

Likes: 40

From: Pa

Quote:

Originally Posted by weekendwarriorfsw32

So like Cromeally?

Depends. There are a lot of heat treatable steels on the market. A heat treated 4140 or 4340 would work well. Fred's sells the steel spacers but I don't know if he makes what you need. I don't have is contact info either, maybe someone can post it.

Apr 27, 2010 | 12:24 PM

#17

weekendwarriorfsw32

Thread Starter

Master of Strokes

Joined: Mar 2007

Posts: 6,808

Likes: 25

From: CA

Quote:

Originally Posted by redford

Still, you may want to consider a gear change with your lift and new tires.

Why?

As an example, suppose you have 33 inch tires now, and 3.73 differential gears. You want 36 inch tires. Your new effective gear ratio becomes 3.419. To restore your gearing to the stock torque multiplication, you would need a 4.069 ratio. 4.10 would be as close as you can get.

Going to a 40 inch tire using the same example; Your effective ratio becomes 3.07 and you would need 4.52 to get back to the effective stock ratio.

There is a great set of calculators on this site that will allow you to plug in your specific numbers and help you determine if you do need to change gearing.

Automotive Calculators offer to you by Ford Trucks Enthusiasts | www.ford-trucks.com

But as of right now with the stock 225 tires and 4.30 gears I want to be closer to 3.73.

Apr 27, 2010 | 04:08 PM

#18

redford

FTE Leadership Emeritus

Joined: Sep 2000

Posts: 23,174

Likes: 1,679

From: Stephensville WI

Quote:

Originally Posted by weekendwarriorfsw32

But as of right now with the stock 225 tires and 4.30 gears I want to be closer to 3.73.

The calculators will also help you decide what size tire will get you close to the 3.73 ratio.

BTW, the 255 is the width, not the height of the tire. Most manufacturers web sites will have the tire height listed.