NV4500 conversion questions: X-member/Seat

[SunSoaked]

I'm going to swapping a nv4500 into my 85 K20 that currently has a turbo 350.

I got two questions that I'm hoping someone can answer:

1. Transmission X-member-are they different? How so?
2. Does the factory floor shifter clear the bench seat?

Thanks for any help.
Mike

[meatwagon83]

I just did this swap in my truck, but mine is 2wd, yes the shifter clears, I have heard that you can use the same crossmember, I did, but again, mine is 2wd

[meatwagon83]

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Plenty of room!

[mongocanfly]

i swapped my sm465 for a nv4500..its 2 wheel drive as well..shifter clears fine and I reused my crossmember but had to move it back 1 1/2" ...which means shortening driveshafts.. measure case length of both trans to give you an idea..

[meatwagon83]

I had to move my crossmember forward about 2 inches, and have my driveshaft lengthened, I went from a t400 to a nv4500 though

[SunSoaked]

Thanks Meat & Mongo,

So the 4500 fit within the trans tunnel? You just had to move the shifter opening forward or back, correct?

Thanks, Mike

[mongocanfly]

Yes ..I had to move my shifter hole back from where it was original and mine has the high tunnel and it had plenty of clearance

[SunSoaked]

Hey Mongo, what year is your truck? Where is your speedo gauge get fed from? Is it cable or sensor generated.
Thanks

[SunSoaked]

Gots to stuff this in here somehow. lol!

[mongocanfly]

Mines a 81..on the speedo I wanted to keep my original as my truck only had 22600 verified miles on it when I bought it a couple years back (came from local fire dept) and the trans was pulse speedo so I had to use a Dakota digital convertor box on mine.

[mongocanfly]

Good looking and clean trans and transfer you got..

[meatwagon83]

I had to put a high trans hump in mine since it was 2wd auto