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Not meaning any disrespect, but sometimes it is helpful to simply refer to the 34P Technical Manual. They are free to download from this site - https://www.steelsoldiers.com/threads/cucv-technical-manuals.220280/

Ditto what Barrman said. The OEM driven gear GM installed in the CUCV NP208 transfer cases was the 41-tooth yellow gear, GM part #1362195. To speed-up the speedometer reading when driving, the tooth count of the driven gear should be reduced; similarly, to slow the speedometer reading when...

I am confident that a new AC Delco speedometer cable can be easily sourced on Ebay - simply type in the GM part number: 25033627. Regarding the driven gear and sleeve at the transfer case, you may find this post helpful: https://www.steelsoldiers.com/threads/calibrating-speedometer.223246/

Did you get this figured out? I'm interested to know what tooth-count drive gear GV installs in their overdrive units.

Today I got the drivetrain moved forward one-inch by repositioning the engine mounts on the frame platforms. Before removing the engine to do this, I marked the outline of the mounts on the platforms with a white marker, and then after the drivetrain was removed, I removed the bolts in the...

Pulled the core support back off and clamped it on my bench, then fit the new Derale #16843 dual electric fan to the radiator. This dual fan provides 4800 CFM cooling capacity, which will be helpful to pull fresh air through the intercooler for the supercharger, A/C condenser, and radiator...

You will need to do your own research regarding which drive gear & which driven gear you have. But the formula I provided stays the same, Determine your exact wheel diameter and then do the math. Then determine the tooth count of your drive gear, regardless of where it is located, and that...

As a follow-up, the OEM M1008 NP208 transfer case came from the factory with a 15-tooth gray drive gear, GM part #14037997, and a 41-tooth yellow driven gear, GM part #1362195, and a GM #25512339 sleeve. To make sure a previous owner hasn't changed these, you can easily remove the driven gear...

You might find this helpful - https://www.steelsoldiers.com/threads/calibrating-speedometer.223246/

Got the new all-aluminum radiator installed yesterday. Fit was excellent, however the overall height was approximately 3/8" shorter than the OEM radiator. I had some black neoprene rubber in the shop, so I fabricated a couple of saddle spacers to fit over the top mounting tabs which made the...

OK I have been asked about the PCV valve and how it will be hooked up, so here is my reply for all to see: Because the supercharger intake is at the rear of the blower, and because I mounted the centrifugal oil filter on the drivers side of the intake, the housing and in-line air filter for the...

Easier to see with a flashlight at night in a blinding snowstorm in Wyoming while installing a power steering belt 4 miles from the nearest road. Ask me how I know. All belts must be removed in order to install that rearward PS belt. There are 2 bolts to loosen for the passenger side...

After completing the installation of the Vintage Air system, I cleaned & undercoated the underneath of the cab. It didn't take much cleaning, as it still looked new from sitting in Arizona all its life. Still amazed at the absence of rust. Got the new drivetrain bolted in place over the...

Got the P400 / 765R4 / NP241 bolted in place. I'll be posting more photos and information in my rebuild thread.

I am in the process of replacing the OEM 6.2 / TH400 / NP208 drivetrain in my M1028 with the P400 / 765R4 / NP241 I have been assembling for the past few years. Over the weekend I got the new powertrain bolted in place and decided to pre-determine the "driven" gear I would need in order for my...

Over the weekend after draining all fluids and removing the driveshafts, I removed the radiator, core support, hoses, and all other attachments to the OEM drivetrain, then lifted the entire unit out of the engine bay with my forklift and engine-lifting gantry attachment. Began the process of...

Remember that the bracket must be on the shaft before the pulley is pressed on. Duh! After you reinstall the pulley onto the new pump, temporarily mount the pump back in its place, tighten the nuts, and then check for pulley alignment. The pump is driven off two belts, one of which is the...

Well folks, what started as a simple hood replacement project fifteen years ago and evolved into a full-blown rebuild, has now been restarted to complete the ordeal. As many of you know, in 2018 I made the decision to build & install a new drivetrain. Over the past eight years I have been...

Well, after eight years, I have finally started the process of replacing my OEM drivetrain with the new P400 / 765R4 / NP241. Got the front clip off in one day. Draining fluids now and will remove driveshafts & mufflers this afternoon.

I installed the rear disc brake kit first, but then later on I became aware that GM had issued Bulletin 88-320-5 in 1988 which provides instructions to remove the rear proportioning valve. I couldn't find my printed bulletin but you can read about it here - 88-320-5 Chevrolet Brake Control...