Rear main tool

fl0w3n

Active member
Jan 8, 2015
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I’ll be doing a trans swap and clutch install on my LB7 next week.

I plan to do the rear main and slave while I’m there.

Is anyone willing to loan me the tool? I can give a deposit for it.

Also, any other tips and tricks while I’m at it?
 

clrussell

pro-procrastinator
Sep 23, 2013
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If it’s not leaking leave it alone. You’re liable to make it worse
 

fl0w3n

Active member
Jan 8, 2015
508
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Where are you located?

I have the merchant automotive version.
I am in Southern California
Moved to Tool Crib.


Good luck.
Thanks!
If it’s not leaking leave it alone. You’re liable to make it worse
I would be fine with that, I’ll try and look closer when I’m in there to see if it’s leaking. I would just hate for it to start leaking shortly after I was in there.

What’s the opportunity to make it worse? I think I remember reading about there’s a cover plate on the rear that’s a pain to line up?
 

BlkMax

Member
Sep 1, 2008
743
4
18
Wasilla, AK
Keep in mind, the flexplate can't just be popped off to take a close look at the rear main seal without buying new torque to yield bolts or some ARP's. To get either the stockers or the ARP's tight will require the flexplate holding tool which goes through the starter hole and indexes in the teeth to hold the flexplate from rotating.



I can't remember the torque value on my ARP's, but I do remember hanging on the torque wrench when I put on my SoCal flex plate.
 

clrussell

pro-procrastinator
Sep 23, 2013
5,928
399
83
I am in Southern California

Thanks!

I would be fine with that, I’ll try and look closer when I’m in there to see if it’s leaking. I would just hate for it to start leaking shortly after I was in there.

What’s the opportunity to make it worse? I think I remember reading about there’s a cover plate on the rear that’s a pain to line up?

50/50 chance it leaks worse after you’re done if you don’t know what you’re doing. I know what I’m doing and don’t change them unless it’s leaking bad.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,685
5,840
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Phoenix Az
Keep in mind, the flexplate can't just be popped off to take a close look at the rear main seal without buying new torque to yield bolts or some ARP's. To get either the stockers or the ARP's tight will require the flexplate holding tool which goes through the starter hole and indexes in the teeth to hold the flexplate from rotating.



I can't remember the torque value on my ARP's, but I do remember hanging on the torque wrench when I put on my SoCal flex plate.

you can retorque the stock flex plate bolts 3-4 times before they no long hold the correct torque. Guy did testing on them a few years back with main bolts, flex plate bolts and the stock balancer bolt. certainly aint a bad idea to replace them if you wanted to.
 

fl0w3n

Active member
Jan 8, 2015
508
25
28
Keep in mind, the flexplate can't just be popped off to take a close look at the rear main seal without buying new torque to yield bolts or some ARP's. To get either the stockers or the ARP's tight will require the flexplate holding tool which goes through the starter hole and indexes in the teeth to hold the flexplate from rotating.



I can't remember the torque value on my ARP's, but I do remember hanging on the torque wrench when I put on my SoCal flex plate.
Won’t I be changing out the flex plate anyways with the southbend kit I get?
50/50 chance it leaks worse after you’re done if you don’t know what you’re doing. I know what I’m doing and don’t change them unless it’s leaking bad.
I’m all good for not risking it :thumb:

The truck has been covered in oil from some other issues but I’ll take a closer peak at the rear main like I said. I don’t recall it seeming like it was an issue.
I haven’t owned it very long.
 

fl0w3n

Active member
Jan 8, 2015
508
25
28
you can retorque the stock flex plate bolts 3-4 times before they no long hold the correct torque. Guy did testing on them a few years back with main bolts, flex plate bolts and the stock balancer bolt. certainly aint a bad idea to replace them if you wanted to.

I’m the type of guy that likes to do it right to the best of my ability, I’ll typically use only AC Delco unless there’s significant proof that an aftermarket part is superior.

For the $70 or whatever the price is on the bolts, I’d replace them. I’m already into the trans and clutch for nearly $4500. Not going to skimp on a few bolts.
 

kaylabryn

Member
May 18, 2012
53
9
8
Mesa, AZ
you can retorque the stock flex plate bolts 3-4 times before they no long hold the correct torque. Guy did testing on them a few years back with main bolts, flex plate bolts and the stock balancer bolt. certainly aint a bad idea to replace them if you wanted to.

I do know when I did mine I could not get the last 60deg turn on it, it did not matter how big a cheater I got(4') on 3/4" drive breaker bar. This was before mine brain processed the torque to yield and bought new ones. The new ones I got the last 60 deg no problem. Mine could have been re-torqued or over torqued prior to me(got the truck with 200K on the clock).

Mike
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,685
5,840
113
Phoenix Az
I do know when I did mine I could not get the last 60deg turn on it, it did not matter how big a cheater I got(4') on 3/4" drive breaker bar. This was before mine brain processed the torque to yield and bought new ones. The new ones I got the last 60 deg no problem. Mine could have been re-torqued or over torqued prior to me(got the truck with 200K on the clock).

Mike

interesting, bolt must have bottomed out in the bolt hole.