Jinxed the 700 by talking about it? Doesn\'t want to shift right Gents- Cooper's dad Foy here. Thanks for all the input on the overdrive ratio. Good advice about the wheel width and max tire tread width, too. We may have jinxed the gearbox talking about it, though. Here's the situation: '90 K1500 Sub, 350/700 bone stock, 182,000 miles, trans rebuilt by local (not a "chain) auto tran shop at 159,000 two years ago. Virtually no heavy use or towing since then. Trans did start to "skip" between 2 and 3 on the upshift--meaning the engine would rev just a fraction of a second, after 1 year. Shop took it back in, fixed it under warranty, I never found out what was wrong (my bad). More recently, as posted here, we've gotten some "gear whine", which I thought was the trans case, and a little 1st gear noise. Trans guy says "could be planetaries" but not enough of a situation to justify pulling the trans, says he. Now it's started to act up after a 25-30 mile run. OK for short runs in town (all upshifting and downshifting normal), but after 25-30 mi, in OD, it doesn't drop back in to 1st when you come to a stop. When the shifter is in OD or 3, the gearbox will come back to 2nd at a dead stop, and start in 2nd when you move off. Then it's reluctant to upshift to 3rd from the 3 or OD shifter position. It'll drop to 1st when you pull the shifter down to 1, but then you have to really tach out 1st (25-28mph), let off the gas, and upshift the shifter to 2 in order for her to go into 2nd. When you do that, it goes into 3rd pretty normally, once you tach 2nd out normally and upshift to 3rd manually, and really easily goes on up into lockup and OD. Trans fluid changed 4,000 mi ago, filter too. Fluid level normal, color nice and pink, no burned smell, even tonight after Cooper got back from a 100 mi round trip to training, all highway miles. So, are we talking about some vacume and/or onboard computer operated shifting modulation problems here? Trans is not slipping or acting up in any way other than not downshifting to 1st and not easily or properly upshifting to 2nd and 3rd. Any thoughts or ideas I should discuss with my trans guy? Oh, and as much as I think 400s and 350s are great, I'm not getting one, so no need to suggest that. I got 159,000 mi out of the OEM 700, with much heavy towing, much of it in OD, before the prior owner and yours truly knew any better, so changing gearboxes is not something I'm interested in. I really like the OD, too. Sorry for the long-winded post. Thanks for any help. Cooper's dad Foy--financial sponsor of Sub-Culture activities for the Coop.