Parts with new transmission mounts (400TH)? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**71CHEVYSHORTBED402** · 01-28-2018, 08:35 PM

Might be dumb questions, but I'm trying to determine which of these parts are "souvenirs" Vs what's re-used. The mount is still in good shape, but I'll replace it anyway for the restoration. Thank you.

B. W. · 01-28-2018, 08:41 PM

the mount is one piece

spacers & bolts don't come with the new mount

**71CHEVYSHORTBED402** · 01-28-2018, 08:44 PM

Quote:

Originally Posted by B. W.

the mount is one piece

spacers & bolts don't come with the new mount

Thanks BW. Go figure I have two different bolts. One GR 5 stamped with a triangle. Might be original. The other is a pinch shorter, GR 8, and is stamped MR. GASKET.

Happen to know why spacers are used and when? The suspension was original on this truck. 2WD. Edit: Seems grade 8 is in order. The threads on the GR 5 bolt were beat up.

**Steeveedee** · 01-28-2018, 09:08 PM

Those spacers set the level of the engine in the truck, I'm guessing. I've not seen this before, but then I don't specialize in these trucks. I don't know if mine even has these. If you weren't having drive line noise, I'd put 'em back in. That amount of shim would change the angle a fair amount.

**71CHEVYSHORTBED402** · 01-28-2018, 09:29 PM

Quote:

Originally Posted by Steeveedee

Those spacers set the level of the engine in the truck, I'm guessing. I've not seen this before, but then I don't specialize in these trucks. I don't know if mine even has these. If you weren't having drive line noise, I'd put 'em back in. That amount of shim would change the angle a fair amount.

Agreed. At some point I'll have the drive line professionally done, so I'll let them figure what's what. Truck is being dropped 2.5 / 4.

**Steeveedee** · 01-28-2018, 11:23 PM

It occurs to me that that beat up bolt should have been beat up before being installed, since the transmission case is aluminum and would have suffered damage before the bolt did. You might want to check the threads in the tail shaft to see if they are beat up. If it were me, and the threads in the tail shaft were damaged, I'd consider putting in a stud with something like JB Weld to keep it from stripping more. Then, just a nut on that stud. You might not have room, though, since the trans would have to lift a ways to be removed. Just something to think about.

01-28-2018, 08:35 PM	#1
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,329	Parts with new transmission mounts (400TH)? Might be dumb questions, but I'm trying to determine which of these parts are "souvenirs" Vs what's re-used. The mount is still in good shape, but I'll replace it anyway for the restoration. Thank you. Attached Images __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025

01-28-2018, 08:41 PM	#2
B. W. Registered User Join Date: Nov 2014 Location: Bigfork, Montana Posts: 1,137	Re: Parts with new transmission mounts (400TH)? the mount is one piece spacers & bolts don't come with the new mount

01-28-2018, 09:08 PM	#4
Steeveedee Who Changed This? Join Date: Jan 2013 Location: Simi Valley, CA Posts: 10,724	Re: Parts with new transmission mounts (400TH)? Those spacers set the level of the engine in the truck, I'm guessing. I've not seen this before, but then I don't specialize in these trucks. I don't know if mine even has these. If you weren't having drive line noise, I'd put 'em back in. That amount of shim would change the angle a fair amount. __________________ ~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA

01-28-2018, 11:23 PM	#6
Steeveedee Who Changed This? Join Date: Jan 2013 Location: Simi Valley, CA Posts: 10,724	Re: Parts with new transmission mounts (400TH)? It occurs to me that that beat up bolt should have been beat up before being installed, since the transmission case is aluminum and would have suffered damage before the bolt did. You might want to check the threads in the tail shaft to see if they are beat up. If it were me, and the threads in the tail shaft were damaged, I'd consider putting in a stud with something like JB Weld to keep it from stripping more. Then, just a nut on that stud. You might not have room, though, since the trans would have to lift a ways to be removed. Just something to think about. __________________ ~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA



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