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The Prestolite design is what was used going forward and lots of us here will tell you it is a failure prone unit. The older Leece Neville seemed to be more durable. But either will go poof if you reverse polarity it.

RFID tags.

For sure you will need to rebleed the brakes to remove air from the system. Hopefully you did not contaminate the system with DOT 3 fluid, you must use DOT 5. Not releasing can be due to the pedal or piston in the master cylinder not fully retracting.

Wilber that is correct. The center steering differential locks the two inputs together. I doubt the right angle drives can handle much more than 100 hp that the 302s put out. So using one 5.9 would be iffy. Two probably ok. This 43,000 lb machine needs way more power than the 302s can deliver.

Should be JB8 you have hydroboost. Hey we all were at that point once so don't sweat it.

Welcome. Let's start with the worst problem, the engine not turning off. Before you go through the agony of replacing the ignition switch, you ought to do some diagnostics first. The injection pump in the valley of the engine receives 12 volts which activates an internal solenoid to allow the...

Welcome! Mites are great little trucks with combat history. Most parts are available thanks to Sam Werner who hoarded these parts back in the day. Couple tidbits for you: the aluminum cylinder jugs were chrome plated on the inside and this plating can peel off after years. Check into that...

Finally got my hands on one of these units. You may recall my thread on the HMMWV bracket available for this extinguisher. The unit uses compressed air from a SCBA bottle to create foam from a tank full of a water/foam concentrate. The foam is then blown 30 feet from the nozzle. The foam can...

Yes sir.

Good to know, I was worried about this don’t want CID to come a’callin

The older 5 ton tractors and the 275s and M48 used the same fifth wheel. GMC 221 was different. The 818 in the pic has an upgrade modern fifth wheel.

Agree with Coffey1, something is not making proper connection in the battery box most likely. Don’t attempt any more starts until you are 100% sure you have 12 and 24 volts in the proper places.

Gonna have to be real precise here for us to help you. Are you referring to the ignition switch or the red starter button?

Brainstorming: leave it stock and add duct hoses to direct cool air up front

What happens when you turn on the ignition switch? What year is your truck? Don’t panic.

David Doyle probably knows the most about this, here are my observations. My ‘66 275A2 for sure never had a stack, it had the muffler near the transfer case with a downspout. The 1970’s contract trucks did have the skinny stack from the factory. The ‘63 275A1 which I sold to SETOYOTA had a...

Only difference is the A1 has the LDS427 turbosupercharged engine with no muffler and bottom exhaust while the A2 has the LD465 normally aspirated engine with muffler and bottom exhaust. Of course both models would have received the LDT engine with stack exhaust at rebuild time.

Blowby means engine is shot. Nothing to do with injection. I had a 6.2 that smoked on one side as well and that engine went to scrap.

Use the GMT400 downpipe, it hugs the powertrain and runs inside the frame.

ECS is Equipment Concentration Site. But I really really doubt any deuce tractors were used by Special Forces.