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:ditto: The CUCV is a totally different truck with an overdrive transmission. 1st gear is a bit low for a diesel truck with 4.56 gears, but that is quickly overlooked when it hits 4th gear and then lockup, and crusing down the highway without having the engine coming through the hood.

:ditto: Good advice.

The 700-R4 swap is more aimed for M1008-1010-1028-1031 trucks with 4.56 gearing. Of course lowering engine RPM at highway speeds will increase fuel milage. If you keep your foot out of the fuel tank, 22+ MPG is obtainable.

The 700-R4 swap will lower engine RPM and allow for higher highway speeds while retaining the trucks original gearing. There are few, if any transmissions as strong as a TH400. There are those that would argue for the Chrysler 727, I don't know about that. Your M1009 has 3.08 gearing, the 700...

An improperly adjusted TV cable will cause what you call run-up, or flair. It's usually the 2-3 shift. The throttle valve controls shift points through line pressure. The right way to adjust the TV cable is to do it with a line pressure test, not just the mechanical tension adjustment for the IP...

Hea speddmon, Thanks for the feedback. Your right, the 700R4 was never ment to be in any 3/4 or 1 ton trucks. Thats why I stress the importance of really building these trans for the task at hand. I've heard guy's on other sites say their 700s will withstand 450+HP, mabey so in a 3400# Corvette...

Thats the truck. I've had that truck as my avatar since I joined SS, I change the photo every once and a while. You have probably seen it with and without the plow rig on it as I take the rig off it in spring. I found it odd that you stated that the truck being a 1 ton may have been a factor in...

Hea iacucv, The 700 I had rebuilt was old, an 82, and may not have been worthy of a rebuild in the first place, but the tranny guy that had been referred to me did it anyway. It was rebuilt with high end quality parts. A shift kit and a throttle valve upgrade kit was also installed, along with a...

Thanks Marcus, I screwed up by not typing out the entire address. Good looking out brother.:oops:

Beleve me when I tell you, an on the cheap 700R4 swap is really not the way to go, and a stock rebuilt 700 will not last very long in these trucks. Although the 700 was in production in 1986, GM used the TH400 in 3/4 and 1 ton trucks for a reason. I spent nearly $1800.00 on an old core 700 that...