Rear Main Seal

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Mango

Full Access Member
Joined
Dec 22, 2021
Posts
189
Reaction score
141
Location
JacksonWyoming
First Name
Gil
Truck Year
1989
Truck Model
1500
Engine Size
350
@newguy11 I am planing on inspecting that again With a camera, If its the culprit off comes the intake and better RTV Ultra Black!!!
 

peats

Full Access Member
Joined
Dec 2, 2016
Posts
290
Reaction score
238
Location
Pennsylvania
First Name
john
Truck Year
72k5, 81c10 short step, 83k10 short fleet, 03 SSR. 25 chevy doodlebug
Truck Model
k5 c10 k10 SSR doodlebug
Engine Size
406 360 6.2 5.3 171
Rear china wall leak on the block is my guess.
 

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
4,067
Reaction score
5,918
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
Plenty of people have put in their 02 cents,here's mine If you just did the intake that's where I'd double and triple check. And the intake can leak oil and not leak vacuum. If you determine it's the rear seal on a 1pc seal 2wd it's no big deal at all . As for the stop leak the way I understand it it is an additive that makes rubber swell that's how it creates a seal but now you've compromised everything rubber that it touches,not how I'd do it . Get 2 long starter bolts take out 2 bell housing bolts and replace them with long starter bolts. Undue everything like you were going to pull the transmission, pry the drive shaft loose at the rearend, tape around the ujoint to keep the caps in place.slide the transmission back on the long bolts and you will have a window big enough to pull the flexplate out through the bottom. Then you can access your seal and end plate.
 
Last edited:

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
4,067
Reaction score
5,918
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
That would have been good info in post 1. Because we don't all know what everybody has and could Give bad information. Like assumed 2wd,but had I not written 2wd in my post you might have tried following my advice.
 

Mango

Full Access Member
Joined
Dec 22, 2021
Posts
189
Reaction score
141
Location
JacksonWyoming
First Name
Gil
Truck Year
1989
Truck Model
1500
Engine Size
350
Done no more leak replaced the intake manifold gasket and used ultra black RTV bigger bead set it in place tightened the bolts until it spouged out of the china wall let it sit fore an hour then torqued it to specs 30 ft lbs then to 35 ft lbs this may be it??!!
 

Forum statistics

Threads
42,137
Posts
909,906
Members
33,635
Latest member
85sqbod
Top