[bikernut]

this is a 4X4 and not doing the valve guides just the valve guide seals. I won't have to pull the heads as I have a compression gauge that doubles as a devise to hook up air to it and hold the valves up. Yes I know the trans has to be removed and also the transfer case if I was to do it that way but with the engine compartment so cramped and be being a big old hairy guy with little to no patiences and the A/C on the right side and that damn steering shaft on the left it would be better for me to pull it. Since it does have 120,000 miles I think as you it is also a good time to replace or check the timing gear to see if it is or has the plastic coated teeth that start to fall off and get caught in the oil pump and then lose the engine to lack of lubrication. I was a ASE certified mechanic up until 87 but never pulled a V/6 apart or out of a S-10 just its big brothers. As to valve guide wear I will see if there is much movement when I do the seals and it it looks bad I will cross that bridge when I get there. It isn't going to cost that much as I have already done my shopping and with a Fel-Pro Overhaul Gasket Set, Timing Chain set by Edlebroke, new Bosch Platinum Plus 4 spark plugs, Prestone Antifreeze, and a stay open thermostate when it fails, it all comes to $225 and my time is free as I have 14 days off a month from my job so time isn't a factor. If I had to do a valve guide job , piston and rings I think I would just go and get a new Target Master Engine from my local Chevy dealer (with my discount).
I also have the use (no time limit either) of a heated garage with a 10,000 # lift and tools just not any special tools, hopeing I won't need much there as the closest place to rent them is 35 miles from me.