Why isn\'t my TH350 putting the power to the ground? Help! I got a TH350 from a reputable shop installed by a reputable dealer. I have major modifications on my carbureted Blazer (see at <A target="_blank" HREF=http://www.bigerik.coloradoK5.com>http://www.bigerik.coloradoK5.com</A>), but basically after I put on the 39.5X18 Boggers I have the following major problem: when I am, say, on the freeway going up a hill in Drive, I can floor it in order to accelerate and the tach revs up to like 3800-4000 rpm for awhile and I just start to accelerate when it all the sudden goes back to, like 2600 rpm and won't accelerate. It's like I'm towing something very heavy. In fact, I almost hold up traffic in the slow lane because it can't just accelerate up to 65 mph like a normal car. My suspicion is that the output at the rear driveshaft is good, but the big Boggers won't spin or get going fast enough so that the tranny is "getting back" the torque and is having to absorb it in the form of burning up the clutch bands or something else in the tranny. Drivetrain is a mildly built 350, TH350 rebuilt 2 yrs ago and a NP203 w/ parttime kit. All running gear is 1 ton w/ grade 8 hardware (very well maintained). All fluid levels are fine. I checked for vacuum leaks and only found a low quality Q-jet gasket. I have a huge K&N air filter w/ stock fuel pump, but fuel filters are new. Vehicle has a body lift so maybe tranny linkage may be tweeked. Tranny vacuum modulator is connected. ANY ideas you have would be appreciated. I think that these big Boggers are the culprit, but I put in 5.13 gears to accomodate for that. Do you think it's the tranny? HELP!