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trac lock and equal lock Posted by fastback2race on 11/4/2009, 6:15 pm 69.232.239.8 what is the difference between a track lock and an equal lock 9 inch third member. I called a reputable rearend shop near me and they asked which one I had.  Post an Intelligent Response

Re: trac lock and equal lock Posted by MustangSteve on 11/4/2009, 9:15 pm, in reply to "trac lock and equal lock" Forum Owner and Moderator 70 and later used traction lock 69 and earlier was equa lock Traction Lock is stronger MustangSteve http://www.mustangsteve.com http://www.mustangsteve.com/My66FB_Signature_marks.jpg  Post an Intelligent Response

Re: trac lock and equal lock Posted by ultrastang on 11/4/2009, 10:01 pm, in reply to "Re: trac lock and equal lock" 68.95.122.123 1969 was the first year [and worst year] for the Traction-Lok differential. It has (4) large holes in the driver's side of the differential case casting [that are visible when the 3rd member is pulled from the rear end housing]. In '70, the Traction-lok's driver's side differential case half was revised and made stronger [solid] to remedy the problem of breakage in this area. From '68 and earlier, the differential was the Limited-Slip. If you were to open up the differential of a Traction-lok, you would see (4) tabs or 'ears' on the outer perimeter of the clutch packs. If you did the same with a Limited-Slip differential, you would find (5) tabs. --to me, it sort of looks like the silhouette of a turtle. Limited-Slip differentials will have (3) friction discs and a large Bellville conical spring that applies pressure to the clutch packs. Traction-Loks will have (4) friction discs and a square block in the center of the differential with (4) coil springs that applies pressure against a steel plate that inturn applies pressure to the clutch packs. Ultrastang Performance Camden, Arkansas http://www.ultrastang.com  Post an Intelligent Response

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REMEMBER!!! When posting a question about your Mustang or other Ford on this FORD MUSTANG FORUM, BE SURE to tell us what it is, what year, engine, etc so we have enough information to go on.