For the last two years my truck has been a nightmare. Two trans, two motor installs, and one rear end rebuild twice. They were all due to human error. So my trans just got rebuilt AGAIN from a shop in Joplin Missouri. After a month of having it, he said my Nelson tune was off. We talked to Nelson and even though Allen and I knew it wasn't, he sent a new tune out for my truck. It was being lazy between shifts under half or more throttle. I grilled the guy and he didn't put the same springs back in the trans that Jerry's transmissions in ftworth had built it with. I had him put them back in and that fixed the problem. ( haven't put the new tune in it yet ) Now though, it shifts so hard most of the time (really bad if you do it manually) from 3 to 4th or manually from 4th to 3rd. If you are under light throttle it still shifts firm but not awful. I've read some other post but didn't find any about one after a new rebuild. Thanks in advance.

 

post up the specs of the truck.
year
engine
mods
fi or na?

what trans are you running?

 

2000 chevy , 4l65e , LQ9 , cam, intake, 42lb injectors , walb FP, LTs, cat delete, 2800 FTI. 3.73 eaton, qtp cutouts, lil spray, Nelson tune. Some other crap I can remember. Just your basic bass boat hauler.

 

Btw haven't sprayed this yet. Just driving back and forth to work

 

Was there an HD2 installed?

It's actually fairly rare that shift is as hard as you explain... That's a clutch pack that's hard to get enough pressure to and it's very common they burn up bc of that.

To that end a tin really needs to Ephesians designed based on how a trans is built. So without knowing it's hard for Nelson to get it right. He may be able to adjust shift pressures to get it to feel right... I don't know.

 

HD2? Sorry I don't know what that was.. I know this guy put a zpack in it and other than that I'm not sure. He said he replaced a sprag and a valve in the valve body.

 

HD2 is a transgo shift kit.

 

yes.. at least it did