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Old 10-06-2019, 08:59 PM   #1
weim55
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Transmission mount arrangement correct for my 69 C20 350-TH400?

I’ve worked on a few of these trucks over the years but I never remember this transmission mount arrangement on any truck I’ve worked on. Very unmolested and bone original CST20. I had no idea there were different heights for transmission mounts as well as what looks like a factory spacer. Anyone know if this set up is correct for the application?

Steve weim55 Colorado
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Last edited by weim55; 10-06-2019 at 11:57 PM.
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Old 10-06-2019, 09:41 PM   #2
FirstOwner69
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Re: Transmission mount arrangement correct for my 69 C20 350-TH400?

Looks correct to me. Here's a pic of mine.
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Old 10-08-2019, 08:20 PM   #3
weim55
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Re: Transmission mount arrangement correct for my 69 C20 350-TH400?

Perfect, thanks for the confirmation. Just wanted to make sure all was correct as she goes back together.

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Old 10-08-2019, 09:44 PM   #4
AussieinNC
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Re: Transmission mount arrangement correct for my 69 C20 350-TH400?

The spacers were installed to align the drive train angle...I have seen them in varying thicknesses....

Get your pinion angle to around 2.5 degrees...

The pic from firstowner69 is correct placement....

Hope this helps...

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