9" rear end question (bearing sizes)

[pazcarguy]

I just picked up a bare housing with axles from a 58~59 ford (according to drain plug/dimples/ previous owners statement) to fit into my 66 coupe. I also picked up a 28 spline 3.50 traction lok to go into this. I used a pair of calipers and measured the axle shaft and the bearing OD and got the following numbers: 2.832" bearing OD and 1.360" axle shaft diameter. Is this considered a small, medium , or large bearing rear? and being that I don't know "exactly' what it came from, does anyone have valid part numbers or a cross reference for different manufacturers for new bearings and seals? Wanted to freshen it up since it is already apart. Thanks in advance, Brian

 

[ultrastang]

The 9-inch rear end you have is the small bearing one. The axle bearings you'll need are p/n RW-207-CCRA.

The axle seal p/n is: 9568.

3rd Member-To-Housing Gasket: p/n RDS-55074

Axle Bearing Retainer Gaskets: p/n 55001 (2 req.)

Flange/Backing Plate Gaskets: p/n 4828 (2 req.)

Pinion Seal: p/n 7044NA

These are O'Reilly part numbers, but most any parts stores should be able to cross reference them.

 

[Coleman]

I have the same rear end and want to install the FORD racing 9" rear disc brake kit. The kit requires the big bearing ends.

Before I pay to have the big bearing ends installed on my housing, I have this question: Will the big bearing fit on the small bearing axles or do I need new axles too?

 

[chromedog]

the frpp kit is basically an off the shelf explorer setup. the good news is that the crown vic uses the same deal for small bearing axles. ultrastang did a writeup a while back, which covers the swap. iirc,the later police packages came with slotted rotors as a bonus...

 

[ultrastang]

the frpp kit is basically an off the shelf explorer setup. the good news is that the crown vic uses the same deal for small bearing axles. ultrastang did a writeup a while back, which covers the swap. iirc,the later police packages came with slotted rotors as a bonus...

Chromedog is correct in the fact the Crown Vic brakes are essentially the same as the Explorer setup (caliper and rotor-wise), with the exception that the Crown Vic calipers are flip-flopped on the axle housing (left caliper mounted behind the axle tube, right caliper mounted in front --while Explorer calipers both mount aft of the housing's tubes), and the fact that the C-V caliper anchor brackets (the cast components the calipers mount to), is designed to fit a small bearing housing, whereas the Explorer setup is designed for a large bearing housing.

I have a set of '98 C-V cop car rear discs in my shop. To my knowledge, none of the C-V cop car rear discs from '92-'95, then from '96-2002 had slotted rotors. All the rotors from these year models were of a solid design (just like the '94-'04 SN95 Mustang V6/GT rear discs --although larger in diameter than the SN95 discs).

The one variation that these year models did have was in the C-V police, taxis and station wagons. They came with stainless steel pistons in the rear calipers. All other common C-V civillian models had phenolic (plastic) pistons within the rear calipers. However, the steel pistons are a direct replacement in the calipers that have phenloic pistons.

In the case of the 2003-present C-Vs, the rotors weren't slotted but Ford did go to a ventillated rotor design in (all) these models. However, the biggest limitaton I see with the 2003-up version is that Ford turned the housing end flanges from a common horizontal position to that of a vertical one. This effectively screwed up the ability in this being a simple swap from the newer models to the old small bearing 8- & 9-inch rear end housings we are all fimiliar with.