SM465 to NV4500 Swap?

[Chevy-Art]

What are the benefits if any, to convert from an SM465 to an NV4500? The truck is a 1990 Chevrolet C2500, 2wd, 3:73 gears, 8 lug and 245/75/16 tires. It has the 5.7 350 tbi and gvwr of 8600 lbs. I know i would get overdrive. But would the cost be worth it? I am only going to use it locally, to work and around town. Occasionally going on a long distance trip with a trailer/car hauler. This is strange, but the previous owner said it came from the factory without cats. These are the two transmission rpo's it has: M20 and MM4.

 

[midnightblue]

I am currently doing this swap. My truck is a little different though. 454 BBC with 4.10 gears. truck screams at 70 on the interstate. i am simply doing the swap for the .73 overdrive 5th gear. I read it Is very worth it when doing Highway driving.

 

[thz71]

Imo itd be worth it. Its all personal preferance

 

[bigdane36]

Any updates I was just looking into this today

 

[Chevy-Art]

No updates. But I was doing some more research and remembered Gear Vendors. Here is what I found: http://www.gearvendors.com/cgi-bin/...AL&9. TRANSMISSION MODEL=4-SPEED MUNCIE M-465
Expensive, but so is going to NV4500. And I am a manual transmission novice. I have only owned 3 other manual trans vehicles.

 

[96C1500]

Surely a cowboy from hell wouldn't have a use for OD... It would be well worth it IMO, just for the overdrive

Sent from my Vortec powered HTC One M8

 

[Chewy1576]

I am planning to do the same swap in my '90 K2500 when I can find a transmission for the right price. Here is some info I have come up with - http://www.gmt400.com/forum/showthread.php?27233-SM465-to-NV4500-Conversion-in-1990-K2500

 

[Chevy-Art]

Surely a cowboy from hell wouldn't have a use for OD... It would be well worth it IMO, just for the overdrive

Now that is funny. The Cowboys From Hell live on the redline. But we also like projects for our trucks.

 

[Djp86mcss]

I put a nv4500 in my 95. Got rid of 4L60. I wanted the overdrive as I do highway and 456 with 38 boggers I'm at 1800 rpm at 65 on the highway. I'm sure I get a minor amount better fuel economy but my main focus was the engine not screaming at highway speeds.

 

[Eskimomann209]

I put a nv4500 in my 95. Got rid of 4L60. I wanted the overdrive as I do highway and 456 with 38 boggers I'm at 1800 rpm at 65 on the highway. I'm sure I get a minor amount better fuel economy but my main focus was the engine not screaming at highway speeds.

I know those 95s are red headed step children
How did you handle the Computer?
Pay for a tune?