autos are for drag racing
manuals are for drag things around
4500 has a slow shift to 3rd but you would be starting off there anyways
and there is a fix for it too...
5th gear nut falls off but i dont think that is gonna happen drag racing
stock 1.25 is plenty strong if you ask me but some guys break em
might have more to do with driving style than weak parts
but if you want to go quick drag racing you have to have an auto
period
i doubt you will ever see a 4500 make a 9 second pass
maybe with a gear vendors behind it and a professional driver
but not just 3rd 4th n 5th with you or me behind the wheel
no way
how quick are you trying to go????????
don
what is the strongest six speed out there?
I'v always been told the nv4500 shifts faster than the 5600. Was told the 5600 isnt made to speed shift and doesnt like it very well. This was from a clutch builder so I would imagine he knew what he was talking about. Could be wrong though.
04.5 with a 5600. Cast iron case?My '99 with the NV4500 shifts much faster than my 04.5 with the NV5600.
04.5 with a 5600. Cast iron case?
My truck has about 20 1/4 mile passes and the 3rd gear synchros are starting to show signs of eminent failure. The shift from 2nd to 3rd is brutal on NV4500's. My truck has gotten so bad, so quickly, I have decided to not race it anymore.
I love to drag race but have to agree, auto's are for drag racing, manuals are for towing.
By the way, my tranny was completely rebuilt 20K miles ago with new mainshaft, secondary shaft, bearings, synchros, seals, etc. My tranny is overfilled 1 qt with the recommended syntorq synthetic gear oil. Tranny has been smooth as silk until a few months ago when I started drag racing at the track.
rebuilding the 4500 is nutz
you have to take a torch to one of the bearings or inside the trans or you will not be able to take it apart