NP435 ?'s

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Oct 7, 2002 | 08:02 AM

ricknzep

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Joined: Oct 2002

Posts: 9

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From: pittsfield usa

NP435 ?'s

Hi everyone. I have a 78 f250, 351m, np435 tranny. In need of a clutch and input shaft seal on tranny. Do you have to split the tranny to install the seal or does it mount from the front? Also,any advice on what clutch to use would be greatly appreciated. The engine is fresh with a mild cam and the truck has a 4" lift with 38" Boggers and will probably see a decent amount of mud. Thanks for your help..

Oct 7, 2002 | 08:46 AM

jalampi

Senior User

Joined: Feb 2002

Posts: 499

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From: Michigan

NP435 ?'s

Local parts store will have the seal and gasket. Just remove the input bearing retainer 4 bolts its easy. I am running a Center Force Dual Friction clutch it works excellent.

1979 F350,4x4,NP435,5:13 gears,Detroit locker in rear with hardened shafts,ABR in the front,L&L Ladder Bars,360 with 428 crank & rods,390 HP heads,Centerforce Dual Friction Clutch,MSD Ignition,39.5x18 Boggers,bucket seats out of a Lightning,& a Southern Body that is perfect.

1997 F350 PowerStroke 4X4,36 Inch Super Swampers, Strait Piped, Chiped, Propane Injected, LUK Clutch

Oct 7, 2002 | 11:14 PM

masterbeavis

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Joined: Aug 2000

Posts: 3,312

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From: Eldorado Ca. USA

NP435 ?'s

MMM, I dont know about the parts houses having that seal... Maybe Napa, or another good parts house. It is a PITA to install also. I am running a Centerforce Dual Friction clutch, I like it so far. The pedal has a light feel to it and also has weights on the clutch fingers for added grip. Expect to pay around $300 for it tho. A good HD clutch should do the job for you. While you are at it, install a new pilot bearing, and resurface your flywheel.

Tony

'77 F250, 4X4 460 transplantee, "Flamer"