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#1 |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,222
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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.
__________________
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 |
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#2 |
Registered User
Join Date: Nov 2014
Location: Bigfork, Montana
Posts: 1,137
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Re: Parts with new transmission mounts (400TH)?
the mount is one piece
spacers & bolts don't come with the new mount |
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#3 | |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,222
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Re: Parts with new transmission mounts (400TH)?
Quote:
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.
__________________
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 Last edited by 71CHEVYSHORTBED402; 01-28-2018 at 09:26 PM. |
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#4 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,373
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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 |
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#5 | |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,222
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Re: Parts with new transmission mounts (400TH)?
Quote:
__________________
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 |
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#6 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,373
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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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#7 | |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,222
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Re: Parts with new transmission mounts (400TH)?
Quote:
__________________
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 |
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#8 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,373
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Re: Parts with new transmission mounts (400TH)?
Good to know. If those threads are beat, the bolts may be a tad too long, allowing them to get against the spacers while the truck was in motion. How do the spacers look, in the holes? Are they marked by threads? Just something to check.
__________________
~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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#9 |
Registered User
Join Date: Apr 2008
Location: Md
Posts: 2,471
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Re: Parts with new transmission mounts (400TH)?
My 71 Long bed 350/350 only had 1 spacer. Did the rear of your truck have any mods done to it? Are the motor mounts original? that might change how level the engine and trans sit.
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http://67-72chevytrucks.com/vboard/s...d.php?t=635605 |
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#10 | |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,222
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Re: Parts with new transmission mounts (400TH)?
Quote:
Anyway, the damaged bolt is 1" longer than the mount and spacers, and yes it was rubbing against one of the spacers. And yes the transmission threads take approx. 7/8", so yes, the bolt is too long ![]() Here I was prepared to order new 2" bolts. On second thought, probably have to anyway, scarcity of 1.7/8, but that's what washers are for. Learn something new everyday, appreciate the edgeucation. EDIT: Thought of another ? ![]()
__________________
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 Last edited by 71CHEVYSHORTBED402; 01-29-2018 at 09:40 PM. |
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#11 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,373
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Re: Parts with new transmission mounts (400TH)?
Not so much smart, as having a ton of experience, not all of it in my favor.
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__________________
~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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