Recent content by Sharecropper

I believe with A/C and a turbo, and especially in hot climates, you might want to consider replacing the OEM engine-driven fan/clutch with a radiator-mounted electric fan. For my Supercharged P400 / 765R4 / NP241 drivetrain swap, which I am anticipating will need a copious amount of cooling...

Squealing belts are a positive indicator of pulley misalignment, period. The squeal occurs when a belt enters and exits a pulley at a slight angle, so slight that the eye cannot detect the misalignment. If a belt is misaligned with a pulley, it will not matter which brand of belt you buy, they...

Ditto on what Tinstar said - the search feature, once you learn how to master the technique, will yield plenty of information on just about any subject relative to these trucks. But to help-out a new member, I will say that the best behind-the-bumper winch mount, in my opinion, is available...

Before you reinstall the reducer, let me know how far off your speedometer reading is and I will calculate which new driven gear you will need for accurate speedometer reading without the reducer.

Ditto on what Flush said. From what I am reading, your drive gear inside the transfer case could possibly be shot. I know it's a pain to get to and to see it, but you really need to remove the sleeve and inspect that drive gear as recommended in my earlier post. You can't get your head and...

Did you try connecting the cable directly to the transfer case without the adapter? I'm interested to know what your speedometer will do in that configuration. Try it and report back please.

That is the standard oil pan for the P400 engines. Heavy cast aluminum.

Since my last post I've gotten a lot done. Powertrain is bolted in place; aircraft pre-oiler is mounted where the OEM fuel filter was on the firewall; 24vdc relays are mounted and wired back to the dash switches, as well as powered from the 24v buss on the firewall, the pre-oiler pulls 4 amps...

These may help -

Thanks Karl for posting that. I'm going to order a set on Tuesday simply because mine are all crudded-up and I don't want to take the time to de-crud them. Edit: Just now ordered online and was pleasantly surprised to see they are offering a 15% Memorial Day Sale! Glad I didn't wait until...

If you need these 41-year-old lines your best bet will be to source them from one of the spare parts vendors. To my knowledge they are not available from GM already bent to shape. I feel sure John at Hillbilly Wizard can provide these in good serviceable used condition. Do you not already...

Is your last name McGyver?

Just following up on this. What sleeve do you have? The Yellow 28-tooth driven gear will require the GM 25512340 sleeve. As previously stated, I have one of these sleeves in my spare parts bin which you are welcome to if needed. It is new in the GM box. Let me know.

Holy Mackrel. Using 3.08 gears in the equation, you would need a Yellow 28 tooth driven gear without the reducer adapter that you removed. Is that what you said you had? If so, try using the Yellow driven gear without the reducer adapter and see how the speedometer reads. If you do not have...

Dang. Good catch. I stand corrected. Let me re-work the calculations. For some reason I was thinking the M1009's were running 3.73 gears.