NP205/Transmission Adapter Measurements Request

[pjmoreland]

I will be installing an NV4500 transmission in my K10, and my plan is to fabricate an adapter bracket for it to allow it to bolt to the stock transmission crossmember mounts. Do any of you by chance have a stock SM465 or TH350 NP205-to-transmission adapter available for taking a couple of measurements for me, please? I'm looking for the following two dimensions:

A) The vertical distance from the crossmember mounting surface to the centerline of the transmission output shaft

B) The horizontal distance from the transfer case attachment surface to the centerline of the crossmember mount bolts

Thank you.

[57taskforce]

If you don’t get anything before the weekend, I can get you what you are looking for on Friday night or Saturday.

[pjmoreland]

Originally Posted by 57taskforce

If you don’t get anything before the weekend, I can get you what you are looking for on Friday night or Saturday.

That would be great. Thank you. I am just in the planning stage right now.

[Orange Crate]

Originally Posted by pjmoreland

I will be installing an NV4500 transmission in my K10, and my plan is to fabricate an adapter bracket for it to allow it to bolt to the stock transmission crossmember mounts. Do any of you by chance have a stock SM465 or TH350 NP205-to-transmission adapter available for taking a couple of measurements for me, please? I'm looking for the following two dimensions:

A) The vertical distance from the crossmember mounting surface to the centerline of the transmission output shaft

B) The horizontal distance from the transfer case attachment surface to the centerline of the crossmember mount bolts

Thank you.

The first dimension is 7.85"

The second is 3.36" but the two surfaces are not perpendicular (see pic). The straight edge is hard to see in the pic, it is laying flat on the bottom transmission mount surface and then the square is resting on that. When the whole thing is assembled, transmission, adapter and transfer case, it gives a slight upward slant towards the engine BUT leaves the trans mount point parallel to the frame rails. I have the adapter because.....I installed an NV4500 earlier this year. Round NP205 TO NV4500.

[pjmoreland]

Originally Posted by Orange Crate

The first dimension is 7.85"

The second is 3.36" but the two surfaces are not perpendicular (see pic). The straight edge is hard to see in the pic, it is laying flat on the bottom transmission mount surface and then the square is resting on that. When the whole thing is assembled, transmission, adapter and transfer case, it gives a slight upward slant towards the engine BUT leaves the trans mount point parallel to the frame rails. I have the adapter because.....I installed an NV4500 earlier this year. Round NP205 TO NV4500.

Thanks! I did not realize that those two surfaces aren't perpendicular. Interesting. I am installing a round NP205 as well. How did you go about attaching your NV4500 to the crossmember?

[Orange Crate]

I used the stock TH350 trans rubber mount and then welded up a "stand off" that is 4.75 tall. At that height I have about .25 to .375 from the floor to the transfer case top. Here is a bad picture of it.

[Orange Crate]

Use the search function at the top of the page. Lots of NV swap info's. Here is mine.

https://67-72chevytrucks.com/vboard/...ghlight=NV4500

[pjmoreland]

Thank you for the photo. Very helpful