Hey guys just ordered the corvette servo for my truck my question is , is it worth it to go ahead and order the pin as well

 

Ive never had to use the Pin... hopefully Vince or a trans tech will chime in..

 

Nah just do the servo. Been running just that on mine for years and its still holding

 

ok cool thanks guys i was looking at the transgo hd2 kit yall think its worth it or just stick with my tune

 

Stock pin is fine. The hd2 kit is a good investment if you plan on having your trans for a while, meaning you don't try to put 600rwhp through it. Otherwise I would put that money in savings toward a built trans.

 

yea it just has full bolt-ons and im thinking of running a 100 shot nx kit and a crcle-d converter

 

I never use the long pin. (3 ID groove) I have found that the pin with 2 ID grooves works just fine. You can always flip the 4th servo piston in the cover to tighten up the band if needed. As far as shift kits go I have used the HD-2 kit for years. Recently I have been using the new sonnax hp kit with the transgo 7-CS spring kit for the input drum. I do add a set of abuse plugs in the valve body and the HD 2-3 shift valve to the package. Seems to work pretty well from the feed back I have received so its another alternative for you guys. Hope this helps you fill in the blanks. Vince

 

Can you explain some more about flipping 4th servo piston in the cover to tighten up the band?
What does it do to the band?

 

Alright, I remember a big write up about the servo before..But I have a brain fart, whats the vetto servo do for ya?

 

It basically positions the pin future into the transmission to tighten up the slack in the band. Basically there is one boss on each side of the piston. One is taller than the other to help accomplish this. Not the best pic but here is one that comes in the TG instructions for one of their kits.



The idea behind using the vet servo is to firm up the 1-2 shift by increasing the fluid surface area of the piston. With adding surface area for the fluid apply we also add holding power/force on the band for second gear with the vet servo. In your trucks there is normally a 553 piston which has less surface area than the vet servo. I use to have a picture with all the servo's and their dimensions. I'll have to see if I can locate it.