« previous next »
Pages: [1]   Go Down

Author Topic: 2 piece rear main seal  (Read 2504 times)

Offline 84GMCSierra

  • Newbie
  • Posts: 27
  • Newbie
2 piece rear main seal
« on: March 15, 2023, 06:29:31 am »
I have a quick question. On my 84 Sierra 2500, with an aftermarket 350 and TH400, do I need to disconnect the transmission to do the rear main seal? I'm doing the oil pan gasket at the same time.
Thanks
Logged

Offline VileZambonie

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 19213
Re: 2 piece rear main seal
« Reply #1 on: March 15, 2023, 10:14:05 am »
If it is in fact a 2 piece rear main, you remove the oil pan and rear main bearing cap.
Logged
,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline gmcowner22

  • Newbie
  • Posts: 26
  • Newbie
Re: 2 piece rear main seal
« Reply #2 on: March 15, 2023, 11:10:31 am »
Only time you should have to remove your transmission is if the engine has a one piece rear main.
Logged
"When you were born, you cried and the world rejoiced.
Live your life so that when you die, the world cries and you rejoice."
                                                [Cherokee saying]

1987 GMC V1500 Sierra Classic "Patch"

Offline JohnnyPopper

  • Senior Member
  • ****
  • Posts: 2778
  • Old Goof
Re: 2 piece rear main seal
« Reply #3 on: March 17, 2023, 12:59:41 pm »
I haven't seen a two piece seal since I rebuilt my '57 235 IL6, that was 45 years ago!

Surprised they used them for so long, but hey....right?
Logged
1957 Apache 3100 235 Inline 6, 3 on the tree
1973 C-20, 3+3 454 4BBL TH400  Water Injection
1978 K-10, 350 4BBL TH350 NP203 M.M. Part time Kit/Hubs
1980 C-10 under construction

Offline 84GMCSierra

  • Newbie
  • Posts: 27
  • Newbie
Re: 2 piece rear main seal
« Reply #4 on: March 30, 2023, 10:44:59 am »
Thanks everyone for your replies. I found out is a 2 piece so I know what I'm doing on my days off, lol
Logged
Pages: [1]   Go Up
« previous next »