Need HELP identifying this differential!!
Thread Starter
Teching In
Joined: Feb 2013
Posts: 18
Likes: 1
Need HELP identifying this differential!! I recently took down my 10 bolt rear end and opened it up to see what I was working with. Rear end came with a 68 firebird I purchased 2 yrs ago. It's not the original rear end. This rear end has c clip axles, 60" axle flange to axle flange, and has 8.5 Richmond gears 3.73. However I cannot for the life of me identify the differential. I have taken pictures of the stamped numbers on the differential and searched the Internet with no luck. Would be much appreciated if someone can identify this differential. I am changing the axles to Strange 29 1/2 28 spline axles. Just want to know if the differential I have is good or should I invest in a Detroit, eaton. By the way when I turn one wheel the opposite wheel turns the same direction, most likely a posi- just not sure who made it
That looks like a Motive Gear mini spool to me.
http://www.summitracing.com/parts/mgr-ms75-28/overview/
http://www.summitracing.com/parts/mgr-ms75-28/overview/
Thread Starter
Teching In
Joined: Feb 2013
Posts: 18
Likes: 1
Mini spool huh, when I bought the car it seemed to be set up for drag racing. I have read mini spools are good if want to go straight but not for cornering. It kinda concerns me if this is true, as I am build my firebird to be a street car. Does anyone have any thoughts on this?
Yea, you're going to have to ditch the mini spool, they're not even recommeded for drag racing. I think they're mostly used for dirt track. Since you already have a open diff case you could get something like a Powertrax locker and install it instead of the mini spool. Otherwise you're looking at replacing the whole carrier with the posi of your choice.
