Mopar Muscle Association UK

Dave wrote:Yes Dr Diff is a good supplier.

The "3rd-member" you need that he refers to is what you call the "pumpkin and gears". So yes you will need to source those seperatly.

Dave81 wrote:

Dave wrote:Yes Dr Diff is a good supplier.

The "3rd-member" you need that he refers to is what you call the "pumpkin and gears". So yes you will need to source those seperatly.

Are these '3rd members' more readily available in the UK, and cross compatable across all 8.75's?

Any idea Dunc?

Have also Emailed Dr Diff to see what the cost of shipping will be........

Cannonball wrote:

Dave81 wrote:

Dave wrote:Yes Dr Diff is a good supplier.

The "3rd-member" you need that he refers to is what you call the "pumpkin and gears". So yes you will need to source those seperatly.

Are these '3rd members' more readily available in the UK, and cross compatable across all 8.75's?

Any idea Dunc?

Have also Emailed Dr Diff to see what the cost of shipping will be........

yes all 83/4 diffs will fit all casings so your fine and yes centre sections come up for sale i have severall open centres maybe 1 suregrip left,

Dave999 wrote:Green Bearing Company builds a bearing kit that replaces the cone-type wheel bearings. These are sealed roller bearing units that do not require end play adjustment, however they offer no side to side support, and fail quickly in street applications. These are drag race bearings only (the manufacturer even lists them under the “Racing” segment of their catalog). Green Part No. RP400.

For A Bodies Only wrote:I kept encountering opposing opinions on whether the Green 8-3/4 axle bearing were suitable for street use. So I wrote to Bearing Technologies Ltd. to get the story directly from the source.

So here's the scoop:
The question is whether or not the RP400 bearing kit for Mopar 8-3/4" axles is suitable for street car applications. There has been a lot of discussion that since your catalog lists it under "Racing" that racing is the only application. Some have also said that the RP400 doesn't have enough lateral retention for street use. Others have said that they have several thousand miles of street use with the RP400s in their axles and have encountered no problem. Can you clear up the issue for me?

Dear XXXXXXXXX,

I received your question about the RP400. I'll try to answer this to the best of my ability. The original intent of the RP400 designed by the Green Bearing Company was meant as a replacement for the original taper bearings in the rear end of Chrysler / Mopar applications. It was made for street vehicles, as were all of Green's automotive bearings. Over time these products became favorites of custom axle manufacturers such as Moser Engineering, Strange Engineering and Mark Williams Enterprises. Green, being a job shop, manufactured a multitude of bearings for these outfits and started categorizing them as "Racing" bearings due to the fact that the products were becoming popular in that application.

There are a lot of these bearings on the road in both street applications as well as on track applications. As far as performance, all I can say is that these have been a staple in our product line with no revisions / issues for a long time. The experts on the performance of the product in various applications would be Moser or Strange. If you would like to contact them, you have to ask specifically for the RP400 with the fixed flange because there is a modified version (MO400) which was designed by request for Moser and has a slide over flange with a snap ring retainer.

You can visit www.moserengineering.com or call 260-726-6689 for more information.

Thank you for your interest in our products.

Best Regards.

Pete wrote:Don't forget brakes, backing plates, etc that work with the axles...

MilesnMiles wrote:$350 to drop in and go!!! Bargain, best get onto Mr Fenton, Dave.