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The 8.75 rearend with the non-tapered axles was used from 1964 up until 1974. The clutch type suregrip in the 741/742 cases can be found in all Mopar models including C-Bodies, trucks and vans until around mid 69. The cone type suregrip in the 489 and 741 cases can be found in all mopar models...

Mopar did put the clutch suregrips in the 489 cases in early to mid 69. This was the transfer period where Mopar was using up left over parts and sticking them in the new 489 case. Late 69 completed the transfer and the 489 and cone-style suregrips were merged and ready to go until the 8.75's...

I disagree with the point that 741 cases did not come with 3:55's from the factory. I recently sold a 741 case with the cone style suregrip and it had factory 3:55 gears. They were definitely not aftermarket. The 741 was used until 72 and was retired. The 742 was retired in late 69 and the...

First off, make sure it is an A-Body 8.75. The distance from center of perch to center of perch should be 43" and the bolt pattern will be 5x4". It will also have the 10x1.75" drums. The 741 case was all that was offered in the A-Body 8.75 rears and if it is a SG it will most likely be the...

Thanks Mrmopartech for the info and the link to the site with the numbers. The site also helped me id another 727 I have. Thanks again, Joe

Thanks Crackedback, my 72 RR is a late build car so this trans will fit my year pretty good. Is this trans the same length as a standard SB 727? I have a SB 727 from a duster and the tailshaft seems to be the same length. The guy I bought it from said he pulled from a 74...

Anybody?

Hey Guys, I have a SB 727 here that I was told was a 72 727. The PO said the PK number id'ed it as a 72 trans. There is no partial VIN on the machined pad on the RH side of the trans(that would be way to easy!). I need help confirming this trans as a 72 so I can...

When using the Green bearings, do you have to remove the old axle seals or can you leave them in the housing? Joe

The first 727 looks like it was from a truck and the 2nd 727 and the 904 are from cars. The reason for this is the truck autos did not have the 2 eyelets on the tailshaft for the floorshift bracket and the car autos did. They did put 727's in trucks because my brother used one from a truck...

To answer your question, yes an 8.75 suregrip center section, no matter what gears are in it for $100.00, is a good deal! A couple years back I picked up a complete minus brakes 8.75 truck rearend with a rebuilt 742 case 3:23 clutch style suregrip for $125.00! I sold the housing and axles to...