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Clutch

snout

Thanks: I will question my transmission guy about it, he seamed pretty much up date on the trans so far, I just don't trust these people, when it comes to doing things right. He knows what I have in my truck, he doesn't believe it does what I said it will do. His son drove it around after they put the new bearing in, and he " hell it acts like it has more power than my 02 duramax".
 
Remember - that aluminum snout is designed for normal casual shifting and will eventually wear down as the cast-iron to bearing sleeve slides to engage\disengage the clutch - it was never designed for hot-rodding, as was not the NV4500 - it would appear you have set your engine up for something other than work - even a cast-iron snout will need inspecting over the life of a clutch plate - moreso when speed-shifting and such, which doubles the wear - even if the snout should be cast-iron, check the to bearing for close fit, with no slop, on the snout over the full length of normal to bearing-sleeve travel
 
What's the inspection procedure for the snout? Since the engine is already out it won't get any easier. I've already had to replace a clutch master cylinder that sprung a leak and was less than a year old (10,000miles)
 
Wipe the old grease off, inspect the bare snout for smooth surface, no grooves, ridges or other wear - place the to bearing onto the snout, check that it's not excessively loose, won't wobble on the snout - check that it slides easily, smoothly, doesn't hang at any spot - mostly, you should be able to tell just by looking at the surface diameter - if it's not smooth, replace it - get the cast-iron snout for longest service, use the correct lubricant
 
Castrol Syntorq LT 75w85 (may also be described as 75w90) GL4 full synthetic Gear oil
GM PN 12346190
Dodge PN 4874459

the Castrol comes in large quantities if Castrol branded (15 gal mini-drums is the smallest, IIRC)
quarts are the quantity (of course) from dealer, dodge is usually cheaper than GM

some sources repackage it into smaller containers, such as quad4x4.com

the only other oil i would use other than the Castrol is Amsoil Synthetic Manual Transmission and Transaxle Gear Lube

One needs to remember that some of the synchros are carbon fiber, which makes them picky oil wise. So only get the correct full synthetic GL4 (no gl4/gl5 combos)75w85 or 75w90 gear oil. I would highly reccomend the three labels of Castrol (GM Dodge, Castrol) or the Amsoil. I am not a huge fan of the Royal Purple so called GM 12346190 equivalent. we are using it in the 98 gasser and it doesn't behave well.

Good luck!
 
Correct - pack the inside of the to bearing sleeve with a hi-temp grease, such as wheel-bearing grease

And correct on the Castrol Syntech GL-4 in 75W-90

Ask Mr GoodParts or Mr MoParts for the ci snout, officially the transmission input bearing retainer - tell'im the clutch release bearing fits onto it
 
thanks for clarifying...oh well, still need to remind people every once in a while what the oil should be! :biggrin:

Note: Nothing good/accurate gets posted after midnight.
 
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