[Scottwax]

In one of the transmission threads, someone who installed the TransGo kit said the cold 2-3 slip was completely eliminated with the shift kit. Definitely considering this as well. My 2-3 shift is more soft than an actual slip unless it gets down into the 20s and 30s, but even when it slips it is only 100-200 rpm at the most. Even though it goes away once the transmission warms up, I still worry about what kind of wear even just a couple soft shifts/slips might be doing to the clutch packs.

I have put shift kits into TH-350 tranmissions (GM 3 speed automatic) and it is relatively easy to do on that particular transmission. Drop the valve body, drill a couple holes in the seperator plate, remove 3 check balls, change a couple springs and put it back together. However, it appears that installing the TransGo kit is more involved and time consuming. In addition, you mess up a TH-350, you can get one at a wrecking yard pretty easily for $100. Not so easy to do in our case. For that reason, if I get the kit, I am going to look for a transmission shop that regularly installs shift kits to do the installation. I'd rather pay $200-300 (or whatever they charge for the 2-3 hours TransGo says the kit takes to install) in labor than have to find another transmission.

I'd go with the non-heavy duty kit. The B&M shift kits I have installed when I had my Chevelle had "street" and "strip" versions. At the time, I wanted hard shifts so I always installed the "strip" version. I got the HARD shifts I wanted. Half throttle would bark the tires on the 1-2 upshift and full throttle meant 10-20 feet of wheelspin and a hard chirp on the 2-3 upshift. Not so sure that constant hard shifts would be so much fun anymore.