stupid question re: ring gear size

[crustycurmudgeon]

What is the size of the V8 differential (non-9") ring gear? Everyone calls it an 8 inch rear, but is that the size of the ring gear or is it 8.8"? When I go shopping I want to be sure to get the right size.

Anyone have a favorite or recommended brand of ring and pinion? Or what to stay away from?

Thanks.

Frank

 

[Anonymous]

The 8.8" is in the newer Mustangs. You probably need to look for the 8"

 

[pprince]

The axles carriers are known for the size of the ring gear.

So...a 9 inch has a 9 inch ring gear; An 8 inch has an 8 inch ring gear and the 8.8 has an 8.8

 

[SAC69]

An 8.8 has a removable rr cover whereas 9" and 8" are serviced through the front-removeable center-section.

Here is an 8.8"

Look under your '67 and you'll see a smooth rear section. This is a 9" but you should get the idea.

 

[crustycurmudgeon]

Thanks, all, for the confirmation.

Frank

 

[crustycurmudgeon]

I looked on Summit Racing's site and they have 3 options for 3.55 gears:

http://www.summitracing.com/search/Department/Drivetrain/Section/Differential-Rear-End-Components/Part-Type/Ring-and-Pinion-Gears/Axle-Model/Ford-8-in/Ring-and-Pinion-Ratio/3-55-1/?Ns=Rank|Asc

Summit brand, Richmond Gear and Motive gear. Aside from the price, is there a reason to go with one of these over another, and are there better options elsewhere? My car will be strictly street driven and will see no track use.

Frank

 

[Anonymous]

I have Yukon gears in my 66.

http://www.ringpinion.com/

 

[daveSanborn]

I looked on Summit Racing's site and they have 3 options for 3.55 gears:

http://www.summitracing.com/search/Department/Drivetrain/Section/Differential-Rear-End-Components/Part-Type/Ring-and-Pinion-Gears/Axle-Model/Ford-8-in/Ring-and-Pinion-Ratio/3-55-1/?Ns=Rank|Asc

Summit brand, Richmond Gear and Motive gear. Aside from the price, is there a reason to go with one of these over another, and are there better options elsewhere? My car will be strictly street driven and will see no track use.

Frank

For a strictly street driven car, you'll probably be fine with any of the above mentioned gear manufacturers/suppliers. Moreso with ring&pinion gear swaps, it's something you only want to do once.... so buy a quality gear set whenever possible. Both Motive and Richmond have been around for a LONG time and have likely fine tuned any possible quality issues. The Summit gears may be to a somewhat lesser standard.

 

[cmayna]

Frank,
I agree with Dave. Those names such as Richmond have been around a long time. Good stuff. Of course, if you could find some original OEM gears........

If you need a good shop in SJ, I can recommend Aldo of GearMasters off of keyes who fixed Shag's rear end which now has some OEM stuff inside.

 

[Starfury]

Cheap gears can result in increased gear whine. I'd go with the Motive or Richmond gearsets. I have motive gears in my 8" and they're pretty quiet.