rebuilding tranny this thursday.. it has hd-2 shift kit installed but it use to shift pretty hard at wot.. it had only one washer so im thinking of just not leaving any.. would this be the way to soften the shift? i like them hard but not where it was breaking the tires loose at 4k rpm.. thanks..

 

Yeah you can take the spacer out of the 1-2 accumulator. Make sure to get a new hardened separator plate and drill the holes with the smallest drill bit. Sometimes the factory separator plate gets pretty warn out.

 

I would probably look to see if you have the 1-2 accumulator valve and sleeve installed the correct way. It is easy to flip it when you install the sleeve in the bore. By doing this you will have a hard 1-2 and 3-4 shift. I would recommend that you drill the seperator plate to .082. On the 1-2 accumulator spacer adjustment. With a late housing you will need to use one shim otherwise the spring seat will not be properly supported. On the early housing you can get away without any washers. This is because there is enough surface area to support the gold spring seat supplied in the hd-2 kit. Good luck with the build. Vince

 

well i got a new transgo seperator plate... i was using the stock one before and it was only a hard 1-2 not 3-4.. and Vince what do u mean by late housing? its an 05 gmc sierra or how can i determine the housing type?

 

The late housing will have an 8 digit production number on it while the early housing has a 7 digit number on it. The issue with the late housing and not using any washers is the gold spring seat is only supported properly. With using this housing the inner diameter where the pin is located is the only part to support this piece. IMO you need to the outer diameter to be supported otherwise the gold spring seat will bend and possibly cause a failure. Just a couple other things to add here for you. Make sure that the 1-2 accumulator valve is not sticking and also use the red red accumulator spring despite the directions. This might help detune your hard shift. You could always return the 1-2 accumulator springs back to stock as well. Hope this helps. Vince

 

Vince is correct that is what I had to do, return the 1-2 accumulator back to the stock setup and I did use a new pin and new aluminum accumulator and that soften my shift back to what I liked and still firm as well.

 

Ok perfect ill take it all into consideration when I redo my shift kit on Thursday ill let u guys know how it goes.. thanks alot