BB Rear Main Seal

Posted By: cjskotni

BB Rear Main Seal - 11/19/11 02:49 PM

Guys,

Can the rear main seal be changed with the motor in the car? Motor is a BB400 with 727 auto tranny. The oil pan and steering linkage are dropped...

Thanks!!

Posted By: RapidRobert

Re: BB Rear Main Seal - 11/19/11 02:57 PM

yes. Might google "moparts rear seal issues"

Posted By: 65rbdodge

Re: BB Rear Main Seal - 11/19/11 03:00 PM

yes again, i have done it on big and small blocks.

Posted By: cjskotni

Re: BB Rear Main Seal - 11/19/11 07:07 PM

Quote:

yes again, i have done it on big and small blocks.

Ok I went ahead and got the Fel Pro rubber set. Any suggestions as to which sealant to use (if any) to make sure it's sealed up nice 'n good?

Thanks!!

Posted By: MoparforLife

Re: BB Rear Main Seal - 11/19/11 07:53 PM

I suggest offsetting the seal in the retainer and block at least a quarter of an inch so that the parting line of the seal and retainer are in a different position.

Posted By: Moparmaniacc

Re: BB Rear Main Seal - 11/19/11 08:27 PM

Is your 400 leaking oil from the main seal? Mine is. I remember hearing that many people put the seal in wrong, what is the trick?

Posted By: cornet684me

Re: BB Rear Main Seal - 11/20/11 12:17 AM

i put a rear main seal in my 68'dodge coronet, 440/727, i could not get the rubber seals to work, i had to wind up using the old rope seal, it work fine, i had to drop the center link to get the oil pan to come out.

Posted By: MoparforLife

Re: BB Rear Main Seal - 11/20/11 01:25 AM

Lip toward the inside (oil side) of the pan <-} So that any oil or internal pressures push the lips outward to contribute to a better seal.