Rear Main Seal 89 BBC - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Chevy Fleetside** · 10-18-2015, 01:43 PM

Dose anyone know if I will have drop the whole crank to change this. I am hoping to have the seal slide out.

cableguy0 · 10-18-2015, 02:08 PM

You just lube the upper half of the seal and slide it in. The old one will push out with little force. Be careful not to scratch the crank with whatever you use to push the seal out.

**Chevy Fleetside** · 10-18-2015, 02:13 PM

Quote:

Originally Posted by cableguy0

You just lube the upper half of the seal and slide it in. The old one will push out with little force. Be careful not to scratch the crank with whatever you use to push the seal out.

That is what I thought but it has been so long since I have done one like this. I will use something hard plastic. I am going to get my 13 y.o boy under to take the pan off.

He needs to learn.

geezer#99 · 10-18-2015, 02:19 PM

Use a small pencil.
Easier to find in the right size.

cableguy0 · 10-18-2015, 03:16 PM

You might have to lift the engine to get enough clearance to drop the oil pan.

**Chevy Fleetside** · 10-18-2015, 04:27 PM

Quote:

Originally Posted by cableguy0

You might have to lift the engine to get enough clearance to drop the oil pan.

There is plenty of room.

10-18-2015, 01:43 PM	#1
Chevy Fleetside Registered User Join Date: Sep 2006 Location: San Francisco Posts: 4,779	Rear Main Seal 89 BBC Dose anyone know if I will have drop the whole crank to change this. I am hoping to have the seal slide out. __________________ "A man and his truck, what a beautiful thing" 65 Short Fleetside BBC 65 Long Fleetside 283 3 on the tree for now. my build thread http://www.67-72chevytrucks.com/vboa...d.php?t=259536

10-18-2015, 02:08 PM	#2
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,950	Re: Rear Main Seal 89 BBC You just lube the upper half of the seal and slide it in. The old one will push out with little force. Be careful not to scratch the crank with whatever you use to push the seal out. __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

10-18-2015, 02:19 PM	#4
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,522	Re: Rear Main Seal 89 BBC Use a small pencil. Easier to find in the right size.

10-18-2015, 03:16 PM	#5
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,950	Re: Rear Main Seal 89 BBC You might have to lift the engine to get enough clearance to drop the oil pan. __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.



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