tjhooker66
Newbie
Which part is the winner? Lol it will rev up to redline just fine. Just doesn't have any power behind it^^^ Winner.
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Which part is the winner? Lol it will rev up to redline just fine. Just doesn't have any power behind it^^^ Winner.
It is the NV4500 just crawled under there and checkedYeah 8mph in 1st does sound a little bit like NV4500 but it's easy to tell if you look underneath and see those covers on either side of the case. The only other trans you'd find in a GMT400 that has those is the SM465 granny low 4 speed that was available only for the first few years of GMT400's (and previous body styles.)
The NV4500 does suffer synchro (blocking ring) failures once they get some miles on them, but they also can suffer if people use the wrong lube. Too many "it'll be fine with (whatever brand)" posts out there that are bad information. The factory-installed carbon fiber blocking rings require use of the specified lube - GM Synthetic Manual Transmission Lubricant, part # 12346190 - or its Mopar equivalent. Other lubes you're taking an expensive risk. Now there are aftermarket parts that are just bronze and any appropriate lube for those can be used (check the GL spec for what is OK with "yellow metals") but only if you're sure you know what all is in your trans.
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Richard
Oh gotcha...if the engine revs up easily but doesn't pick up speed as it revs up makes it sound like the clutch is slipping.