Do all SM465 have the exact same trans-to-bellhousing bolt pattern?

[jumpsoffrock]

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.

[LockDoc]

Originally Posted by jumpsoffrock

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.

Yes, all small block Chevy SM465 manual bell housings have the same bolt pattern.

LockDoc

[KQQL IT]

Depending on your location in California.
I have a loose one you could have for mockup
Central CA here

[LockDoc]

Originally Posted by KQQL IT

Depending on your location in California.
I have a loose one you could have for mockup
Central CA here

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

[jumpsoffrock]

Originally Posted by KQQL IT

Depending on your location in California.
I have a loose one you could have for mockup
Central CA here

Thanks man I'm close actually, however I already have one sourced for now, I appreciate the help.

Originally Posted by LockDoc

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

Actually it's specifics like this that help the most, thats good to know the difference. Which applications used the smaller diameter?

[KQQL IT]

It's here on a shelf
I could measure it in the morning.
Mid seventies 454 tho

[jumpsoffrock]

Originally Posted by KQQL IT

It's here on a shelf
I could measure it in the morning.
Mid seventies 454 tho

That'd be nice, thank you.
Didn't you used to drive a Yellow big Rig? You'd take pics of your travels sometimes and post them.

[KQQL IT]

Yep, still do.
Keeps me interested in truckin

[LockDoc]

Originally Posted by jumpsoffrock

Thanks man I'm close actually, however I already have one sourced for now, I appreciate the help.


Actually it's specifics like this that help the most, that's good to know the difference. Which applications used the smaller diameter?

The SM420, and possibly the three speed manual transmissions, but I don't know that much about the 3 speeds.

LockDoc

[KQQL IT]

Yours for the taking

[jumpsoffrock]

Originally Posted by LockDoc

Yes, all small block Chevy SM465 manual bell housings have the same bolt pattern.

LockDoc

Hey one last thing, I am using a big block in my truck, do they also use the same bolt pattern from bellhousing to trans?

[LockDoc]

Originally Posted by jumpsoffrock

Hey one last thing, I am using a big block in my truck, do they also use the same bolt pattern from bellhousing to trans?

Yes.

LockDoc

[KQQL IT]

Good to meet you this afternoon.
Hope the parts work out for you.

[jumpsoffrock]

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.

[KQQL IT]

Originally Posted by jumpsoffrock

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.

Thanks, we really have a good time fixing this old stuff.
Good luck with the 4500 project

[MJN]

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.

[LockDoc]

Originally Posted by MJN

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.

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

[HO455]

Originally Posted by jumpsoffrock

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.

You might, there's not a lot of love for yellow trucks around here.

[jumpsoffrock]

Originally Posted by MJN

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.

Originally Posted by LockDoc

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

Thank you MJN and Leon, I was actually a little worried because my bellhousing on the truck is cast iron and this one is aluminum and I was afraid it wasn't the same.
Thanks for the info; I'm a little surprised that such a heavy trans was hung from an aluminum bell...

Originally Posted by HO455

You might, there's not a lot of love for yellow trucks around here.

haha. Well looking at your fleet, you seem like a fairly diverse car lover lol

[HO455]

Originally Posted by jumpsoffrock

.
haha. Well looking at your fleet, you seem like a fairly diverse car lover lol

My 52 F-2 is painted 73 Corvette yellow.