[tdangle]

I've had the same issue with slowing down and lugging. Thats why I installed the vac switch. It eliminates that issue. The only issue I have is if I try to drive in D not 3rd around town, it shifts into 4th way too early. then the converter locks, vac drops it unlocks then locks back up 8 sec later. I've not found a way to avoid this and as a result drive in 3rd around town. Kinda sucks. I thought about the B&M speed based unit but like you have a problem with the cost. No way it should cost that. I would actually love to have a 4L60 but when your done, it looks like $4500 or better. Be nice to have the response of a modern car as to when it shifts and locks. Oh Well, guess I have to live with it.