My second M715 build. What was I thinking?

[67smith]

You could use the '96+ bellhousing and use the internal slave. Other wise, yes, the 92-95 bell housings with the external slave will contact with passenger side drive shafts.


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[jeeper]

Thanks. I must have gotten pretty lucky. I found the transmission and bell housing at the same time.



The seller thinks the transmission and bell housing are from a 1997.

I will start cleaning it up in the next few days. I will also need to start taking the automatic out.

[Barrman]

Great find.

You will also need a starter motor with the big opening at the gear. I think all the redux starters are the big mouth design so you probably already have it.

[jeeper]

Thanks Tim. I will need to figure out what yoke I have so I can get my jack shaft going sometime. Did GM use a Saginaw joint or a Spicer joint on this?

[Barrman]

I don't remember. I did press the balancer ring off the yoke on mine to clear the cross member. Then, NAPA had on the shelf in my little town the exact conversion u-joint to go from the NV4500 to my stock M715 short shaft. I will have to go looking for the number, if I even have it anymore. That was 12 years ago.

[jeeper]

The jack on my engine hoist died last weekend. I finally got another jack for the hoist and got it working today. I picked the transmission out of the back of the truck and power washed it. I sprayed some engine de-greaser and power washed it again. It cleaned up a little. I can actually touch it with my bare hand and not get oily now anyway.

I am getting ready to pull the 700r4. I unbolted the drive shafts and shift linkage. I hope to start unbolting the transmission from the engine tomorrow.

I was thinking about pulling the cab for the transmission swap but am going to try it without removing the cab first.

[jeeper]

I got the old transmission out on Sunday. It was easier than I was expecting. I unbolted the transfer case from the transmission before I took the transmission off the engine. I was surprised to see I had water in the transfer case. Not a lot but enough that it caused the fluid to turn milky.

I got the next transmission bolted to the engine yesterday. The shift lever fits in the tunnel cover perfectly.

I will need to fabricate something different for a transmission support now.

I have the transfer case under the truck but it was getting dark so I didn't get it bolted in yet. The transfer case looks like it will be in the way of the exhaust as it was planned before. Once it is bolted in I can determine what I need for a new jack shaft as well as brackets for the shift and brake levers.

So I will be draining the old oil out and installing new oil in both the transmission and the transfer case. I know the case takes gear oil but what about the NV4500? When I asked NAPA yesterday they couldn't cross reference the GM oil to anything they sold.


I searched google and ended up at wikipedia which says this:

Mopar Synthetic Manual Transmission Lubricant Mopar P/N 4874459 (Material Specification 9070)

GM Goodwrench® Synthetic Manual Transmission Fluid (GM Part No. U.S. 12346190, in Canada 10953477)

What are others using?

[Barrman]

Yep, the NV4500 needs a gallon of Syntech. Advance Adaptors had the best price the last time I was looking. Even the best price is super high though. Be prepared for sticker shock.

[67smith]

Castrol makes one, typically they only sell 5 gallon jugs, online retailers and 4x4 shops repackage it in smaller quantities, amsoil also makes one,
http://www.amsoil.com/shop/by-produc...ont%2fmtg.aspx

Dodge dealers typically have it cheaper then gm dealers, online prices could be cheaper, but don't forget shipping costs.

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[67smith]

Yep, the NV4500 needs a gallon of Syntech. Advance Adaptors had the best price the last time I was looking. Even the best price is super high though. Be prepared for sticker shock.

I thought it needed 6 qts? Or just under. My sm465 just took 5.2 qts of gear oil, and it doesn't have the short extension housing for 5th.

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