9 inch open differential

[bn69stang]

They are a bit noisy , but worth it  IMO  .. Bud

[jayb]

I took it for a roll around the block and boy does that Detroit locker cla-clunk, cla-clunk, clu-clunk around corners! Are they really suppose to be that noisy? I don't mind cuz it's a Rat kind of car, but I just want to make sure it's normal.

Dave J

Did you buy one of the NASCAR lockers?  Those are pretty noisy, so what you are hearing would be normal.  If you bought one of the "soft" lockers, they are much quieter.  You can tell the difference by looking through the locker itself; the noisy ones are a straight bore through, while the soft lockers (at least the one that I have) has a hole straight through, but it is much smaller in diameter than the axles.

[Ratbird]

Yes, I believe it is a NASCAR one. Here's the link, they still have another 4.00 just like it at the bottom of this page. http://www.roushyatesparts.com/Used-Ford-9-Inch-Rear-Gears-s/640.htm

Glad to hear that the noise is normal. It's not a problem at all for this car, it's kind of nice actually! I'm guessing it'll be pretty rough on the u-joints and tires if driven around the streets a lot???

Still like some opinions on the idea of drilling out the threaded yokes for u-bolts - anyone done this before?

thx, Dave

[Ratbird]

I just called Roush Yates and they are shipping me the straps. Can't wait to get this on the road with and have some fun.

Dave

[jayb]

I'm guessing it'll be pretty rough on the u-joints and tires if driven around the streets a lot???

thx, Dave

Well, I've run those lockers for years and haven't blown up any U-joints, but I always put 1350 series U-joints in my cars.  Maybe smaller ones wouldn't do as well.  In any case, I don't think you will affect the U-joint life too much.

As far as tires, well - you weren't expecting to keep those very long, were you?? 

[Ratbird]

Excellent point Jay!