I just bought a 1996 12v 4x4 manual to do a conversion into a 1997 f-250 460 4x4 auto. While we have the motor and tranny im thinking of suring it up. I want the truck to eventually have 500-550hp, single turbo, going to be a DD, with towing and 1/4mi couple times a year. I am not going to do any performance mods until I get the conversion compleatly done but I am thinking about shuring it up while its all out. This is what im thinking and I would like your guys opinion.

Valair clutch sd NMU70119-04
5th gear nut
60lbs spring- is there any down side to this before doing 4k spring?
head gastket and bolts
kdp had already been done

I want to have a solid base and not worry about it breaking down I drive from central tx to south florida and have to be reliable.

 

woulddn't recommend that all ceramic clutch for towing. its do-able but its rough and damn near impossible to back a trailer up. i have to use 4-low. 5th gear nut is essential for a solid base. no the springs wil be fine before the 4k gsk. if it still has the stock headbolts and headgasket i would just buy some arp 12mm's and leave the head on and replace the stockers 1 by 1. that should handle you up to about 55 pounds of boost. and if you run more then that i would say to get it o ringed.

with all that you will have a great base to start building up on. sounds like you will have a great project. you should start a thread on the build

 

thanks for the help and i will start a thread once it gets underway the project isnt starting until dec/jan just getting everything ready for a smooth swap.

Are you rcomending a DD clutch instead of the full ceramic?

 

it depends on how much $$$ you wanna spend an how much you will actually tow. the ceramic will hold tons of power and you can tow with it, its just not easy cause it will not slip at all. its either in or out. so if your gonna tow alot you should go with a DD. but if you dont have any money like me go with the ceramic its a good clutch but it will take time to get used too. hope that helps.

 

alright well money iis always an issue and i dont tow that often so single it is thanks

 

I hope the dodge is a complete basketcase that your gonna be hackin up...

 

um... no its would probably **** alot of dodge lovers off by hacking this but it is what it is if any one is intrested ill be parting it out very soon and it will be able to be found in the classifieds

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well i changed clutch selection im going with the NMU70NV56DDN
instead its a dual disk any thoughts on it?

 

For a good double go with valairs ceramic rigid disks. Don't sled pull it the ceramic won't hold up. Also to fix 5th gear you will need a full splined main shaft but as we have found out the counter shaft/ 5th gear cone is very weak. Do not for any reason powershift lug or generally beat on 5th gear. IT WILL BREAK.

 

well i already bought the other clutch because i didnt get a response in this but hopefully its still a good clutch and im just going to do it with the set screw one i cant afford the full spline at the moment. the nuts usually last 100,000mi though correct?

 

The nut just keeps the gear from backing off. The counter shaft and syncro cone are very weak.