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Iceman, Thanks for your encouraging comments regarding the 700R4. I know that I am a little over-cautious since this is the first automatic transmission I rebuilt and I do not want to spend another weekend day yanking out a burned up 700R4 and putting the TH400 back in my daily driver. The fact...

There are several ways to control TCC lockup automatically depending on the type of valve body you have. If you google "700R4 TCC lockup wiring" you will find an abundance of options. However, keep in mind that a TCC can be fried even easier than the 3/4 clutches on the 700R4 if the engagement...

What axle ratios and tire diameters are you running in your CUCVs/Blazers?

Just completed a 600 mile trip without any issues. Got 21 miles per gallon staying between 65 and 70 mph on the interstate. That is impressive for a full size, lifted truck with aerodynamics of a brick and a whole lot better than I ever got with the TH400 at any speed. Operating the engine near...

I put Helicoil inserts in all four holes but using through bolts in the top holes is a good idea. I'll try to find Grade 8 bolts that have enough thread to fit a nut on the protruding part.

Last weekend I put a 700R4 with NP241C in my M1009 with 4.10 gears in a 14 bolt FF axle and 315/75R16 BFGoodrich T/A KO2 (34.5" diameter) tires. This is the truck in my avatar. I built this tranny about 2 years ago during a long, cold Montana winter but did not have the time or energy to make...