Do all SM465 have the exact same trans-to-bellhousing bolt pattern?
Locdoc saved himself from buying an adapter for his NV4500 swap by drilling holes in his NV4500 case using the original SM465 bellhousing as a "template"
http://67-72chevytrucks.com/vboard/s...d.php?t=673588 Do all SM465 bellhousings have the same trans-to-bellhousing bolt pattern? I have a source on a bellhousing that mated a 350 to an SM465, and I might could use it, rather than having to tear my current trans out first and use it to drill the holes. Thanks everyone. :metal: |
Re: Do all SM465 have the exact same trans-to-bellhousing bolt pattern?
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Yes, all small block Chevy SM465 manual bell housings have the same bolt pattern. LockDoc |
Re: Do all SM465 have the exact same trans-to-bellhousing bolt pattern?
Depending on your location in California.
I have a loose one you could have for mockup Central CA here |
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The only thing you have to watch out for is that there are two sizes for the front bearing retainer hole. The small (4-11/16") diameter and the 5-1/8" diameter (needed for the NV4500 transmission). It would need to be a bell housing from a truck with the SM465 manual transmission. (1968 up) LockDoc |
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Re: Do all SM465 have the exact same trans-to-bellhousing bolt pattern?
It's here on a shelf
I could measure it in the morning. Mid seventies 454 tho |
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Didn't you used to drive a Yellow big Rig? You'd take pics of your travels sometimes and post them. |
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Yep, still do.
Keeps me interested in truckin |
Re: Do all SM465 have the exact same trans-to-bellhousing bolt pattern?
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The SM420, and possibly the three speed manual transmissions, but I don't know that much about the 3 speeds. LockDoc |
Re: Do all SM465 have the exact same trans-to-bellhousing bolt pattern?
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Yours for the taking
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Yes. LockDoc |
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Good to meet you this afternoon.
Hope the parts work out for you. |
Re: Do all SM465 have the exact same trans-to-bellhousing bolt pattern?
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Good stories man! You son is really impressive for his age. I'll let you know whenever I get the NV4500, hopefully in a couple weeks. They guy made it sound like he has a few lying around, and that I could see them all and pick my favorite. We'll see how many he has in a couple weeks. Thank you for everything.
Here's a pick of my daily, hope I don't get banned for this. |
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Thanks, we really have a good time fixing this old stuff. Good luck with the 4500 project |
Re: Do all SM465 have the exact same trans-to-bellhousing bolt pattern?
One thing to keep in mind is the bottom two bolts that hold the bellhousing to the main case. Starting in '73 when they went to the cast aluminum bellhousing all four bolts thread into the bellhousing, prior to that the bottom two bolts went from the inside of the bellhousing and threaded into the main case.
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That is correct. You can still use the later bell housings but to install the NV4500 like I did you have to drill out any hole that is threaded. LockDoc |
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Thanks for the info; I'm a little surprised that such a heavy trans was hung from an aluminum bell... Quote:
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