What it is required to put a NV 4500 behind a big block in a 1-ton truck? Thank-you

A scattershield that can be purchased from Summit Racing.

2x or 4x4 1 ton? what yr nv4500? I am just curious what nv4500 you got. DODGE? GM?

what he said scattersheild from summit should do either 2x or 4x4 and a early gas 2x or diesel nv4500 check input shaft for correct spline count on clutch disc, early gas can be fine spline later model will have corse 10 spline.


scattersheild is it for BB mopar + nv4500

good luck.

It's a 2wd 1-ton. Thanks for the info. I don't have a NV4500 in my possesion yet. I knew there was a difference, just couldn't remember what it was. I do know where there is a NV4500 from a Chevy local to me for $200. Pilot bushing is the same? Any tips or info for the hydraulic clutch set-up? The mounts on the frame rails? I'm diving into new territory....any help is appreciated. GM is always coarse 10 spline, correct?

The GM input shaft is shorter, but I don't remember by how much. The pilot is probably a different size but I'm not sure on that and of course the slip yoke will be different.. The GM trans also has some gear ratio differences. Google search info on the NV4500 and you should come up with a bunch of spec's and info on them.

If you have a burning desire for an NV4500 do yourself a favor and either install the fifth gear fix right up front or buy one with a good fifth gear fix already installed. If you don't, you will be.

Lunched 7 NV4500's in my time driving Cummins trucks, 3 of them were rebuilt with the 5th gear fix. I will never own another Dodge with an NV4500. I have never tried an NV5600 6-speed to see how I could break one of those, but I might try someday...LOL

The 5th gear nut loosening was only an issue with the Cummins trucks, not the gas versions. It has something to do with the harmonics of the engine at a certain RPM/MPH.

Thanks for the clarification. I've never had the NV4500 in anything but the Cummins and in fact I have a '98 right now with no 5th gear.

Also of note, the diesel version has a larger input shaft and possibly the output shaft as well, I can't remember about that. The larger input shaft precludes using it in a gas application and vice versa as there is no clutch disc available for the conversion. Also you can't just swap input shafts with the GM version either unless the ratios are the same. It gets to be a little confusing. The best bet is to just get a NV4500 from a mid 90's or so truck with a 360 and go from there. The one I have is from a 97 2500. If you plan to get one from a junk yard be forewarned they are heavy, like 250 pounds heavy so bring help.

I believe the 5th gear issue is due to the nut vibrating off. I think a lot of that falls on the 12 valve working so well at such low RPM, people would lug them around and rattle that 5th gear nut off. I have had several friends with NV4500 trucks and nobody had that problem. But we were all young hot rodders that never lugged anything just high RPM use from us lol. I did have a friend break an input shaft on an NV4500 but that is really the only carnage any of us had.

you need a cummins nv4500----if you have a dodge gas you can swap out the input shaft and bearing retainer maybe $200--amazon sells the kit----if you have a chevy one you cant use the early model--i think it breaks at 1996---the early will not bolt to a cummins bell housing and it has a lower first gear which means if you tried to use it the input shaft/gear is different and you have to totally disassemble the transmission to get to the corresponding gear then it still wont bolt to your cummins bellhousing--------if you get the late chev after 1997 it will bolt to the cummins bell housing and you can swap the input/bearing retainer easy----however the chevy output spline means you have to use a chevy transfer case or a chevy driveshaft....

He has a big block, not a Cummins.

ok-----its the same rules--you can use a cummins or v10 and you can change the input shaft bearing/ retainer-------or you can use a dodge gas nv4500 stock---you can only use the late chev and you have to put the dodge gas input bearing /retainer--- the chev 2wd has an old school transmission brake on the tail.....

Is the input shaft the same size as the NP435? Diameter? Same pilot bushing? Spline count? I already have the new clutch for the 400.

Same pilot bushing, spline is not the same.