Rear Main Seal Installer

[fancyTBI]

Can anyone recommend a tool (individual or set) that I can use to help install the rear main seal on my 350? I’ve seen people use PVC or other home-brew tools but I’m going to have to do this twice this year and I’d rather just have the right tool for the job.

Thanks!

 

[Stumpy]

The seal I installed in mine came with, what they called, an installer. It was just a plastic insert, to keep the inner part of the seal from getting damaged. My part of the install kit, was a 2x4 block of wood, and a hammer.

Been several months later, and no leaks.

 

[fancyTBI]

I’ll have to see if the Felpro set comes with one. That would be easy enough to use. I’ve got a big aluminum roller that came off an assembly line that I use to put even pressure on things I have to press (or beat) in. Thanks for the reply.

 

[evilunclegrimace]

https://www.toolsource.com/crankshaft-c-1321_139_144_951/rear-main-seal-installer-med-duty-truck-p-109409.html

This is the correct tool for one piece rear main seals. It is spendy but I have never had a failure using one.

 

[Vanishing Point]

A little pricey, but if you are interested you can try these!
Call Us 641-784-TOOL (8665) or Toll Free 866-700-7572
7am - 6pm Mon-Thu | 7am - 5pm Fri
ALL HOURS ARE CENTRAL TIME ZONE

J-35621-B Rear Crankshaft Seal Installer Alt ST-192​

SKU# ST-192
California Residents: WARNING

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You will earn 3 dollars off your next purchase for purchasing this product.
Item Condition: new

• Stallion
  ST-192
  $179.99
• OEM
  J-35621-B
  $271.07

Ships today! Order now and receive by Tuesday April 25 when selecting UPS Next Day Air

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• AUTOMOTIVE SPECIALTY TOOLS
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1. J-35621-B Rear Crankshaft Seal Installer Alt ST-192

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J-35621-B Rear Crankshaft Seal Installer J-35621 J-35621-A Alt ST-192 Stallion
This tool is not plastic. It is heavy duty steel and will last much longer!
Application: 4.3L V6, 5.0L V8, 5.7L V8
Used to install rear crankshaft seal 10088158 squarely to the appropriate depth on all listed small block engines.
If you have the following seal/rear housing part numbers 12639250 or 89060436 you need the following: J-41479-B.
If you have the following seal/rear housing part numbers 14088556, 14088557 or 10088158 you need the following: J-35621-B.
You'll find Stallion Products are widely considered the most heavy duty on the market! This is a high-quality tool and you will be pleased with your purchase. Don't try to save a few bucks at the expense of your engine - know that you're getting quality from Stallion Products. Even the tool's ball bearings are made in the USA!

MANUFACTURER	Aftermarket
BRAND	Stallion Products
STORAGE CODE	O-43, O-49

 

[fancyTBI]

@evilunclegrimace yeah that is pretty pricey. I might go with the one that @Vanishing Point recommended. They also sell the one you linked.

 

[xXxPARAGONxXx]

I take it the rear main seal installer mentioned in this thread is for earlier 350s...

My understanding is that later 350s like the Vortec don't need a rear main installer because they have a one-piece rear main seal. Did I get that right?

 

[evilunclegrimace]

I take it the rear main seal installer mentioned in this thread is for earlier 350s...

My understanding is that later 350s like the Vortec don't need a rear main installer because they have a one-piece rear main seal. Did I get that right?

NO. The one piece rear main was instituted on the 5.7 TBI engines in 1987. It was factory on 4.3,5.0, 5.7 and 7.4 engines both TBI and the Vortec engines.

 

[xXxPARAGONxXx]

NO. The one piece rear main was instituted on the 5.7 TBI engines in 1987. It was factory on 4.3,5.0, 5.7 and 7.4 engines both TBI and the Vortec engines.

Do the later Vortecs need a rear main seal installer tool? I thought I recall the seal being a part of some metal assembly so it's just an easy bolt in assembly. Like this:

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[evilunclegrimace]

Do the later Vortecs need a rear main seal installer tool? I thought I recall the seal being a part of some metal assembly so it's just an easy bolt in assembly. Like this:

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They are the same as the TBI engines, you do not replace the seal housing only the seal.