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i opened the DELCO box today of my NOS 4000 rpm tach and discovered that switch on the back is not actually a switch at all. I believe I have it figured out and will post photos and my theory tomorrow.

Hey Gimp - what do your kits consist of?

Mine does the same thing. When turning them off they don’t always return to “park” along the cowl. But then when I wiggle the stalk, they will then complete their cycle and go to sleep. So I just assumed it was a stalk issue and planned to take it apart whenever I had the time.

What I had intended to do, and still plan to do, is to temporarily wire the tach with it laying on a bench beside the truck and the truck running. I actually have 2 of these things, 1 older tach still mounted it a mid-1980’s cluster, and another NOS unit still in its GM box. Both tachs appear to...

i have one of those 4000 rpm tachs but haven’t installed it yet. If I remember correctly the plug on the back has 3 wires, one is a 12v hot, another for the tach signal, and the third as a ground. I’d suggest you make sure it is grounded properly. Also, there is a little switch on the back which...

Had my original 1984 AC Delco starter completely rebuilt and installed in on my P400 with new GM starter bolts and original bracket (sorry Rustystud). I figured it turned and started my 6.2 just fine for 26 years so maybe, just maybe, it would turn the P400 for a while. I temporarily wired a...

Yes a Level 2 K-case 700R4 from Bowtie Overdrives in Hesperia, CA http://www.bowtieoverdrives.com/ The owner is Chris Gardner who owns and drives a M1008 as his daily driver and knows how to build/set-up a 700R4 for diesel application. I purchased a Level 2 from him which is rated for 450 HP...

Update - Got the new GEP vented fuel pump mounted and fabricated/installed a new fuel line; installed the coolant bypass hose and fittings; had my original 1984 Delco starter completely rebuilt and installed, along with the correct starter bracket - hot-wired 24-volt from my truck to test the...

In my opinion Harland Sharpe should reimburse you, not only for the cost of the parts but also your labor and inconvenience. Not sure what recourse you have. Their response to your letter will reveal what kind of people they truly are. If they do not respond in kind maybe start a Go Fund Me...

In my opinion, a correctly built 700R4 is the wiser choice over a Gear Vendors unit (hereinafter GVU) for the following reasons - 1.- GVU provides higher final ratio to rear axle only; 700R4 provides higher final ratio to both axles simultaneously 2.- An inadvertent shifting into 4WD while the...

Steel Soldiers is an outstanding resource for knowledge and information pertaining to military vehicles. Please refrain from negative and derogatory comments.

Thanks everybody for the opinions. I am leaning towards completely rebuilding/installing my original 1984 Delco 24v direct drive starter. I have come to the conclusion that a HMMWV starter will be too big and heavy, and the modern gear reduction units are made in China. My original Delco is...

Just ordered the correct flexplate bolts from Summit - ARP #200-2906. 7/16"-20 fine thread with .725 threads under the head.

Ken - GOOD CATCH! You are correct, the flange bolt heads are too high to clear the torque converter. Whew, that was close! I owe you a cowboy steak! I'm ordering the correct flex plate bolts now from Summit.

Yes and that is exactly what I am preparing to do. I am trying to decide which starter to install. I have my original 1984 27MT direct drive off my 6.2 which has only 12,000 miles, but it seems sacrilegious to use that old-school starter on this P400 6.5 engine. I considered a HMMWV starter...

Rich I apologize I thought you were referring to the water pump plate, not the aluminum timing gear housing. My new P400 has no visible gasket between the housing and the iron block, just some red goo which has not hardened but will clean off easily. This must be that anaerobic sealer you...

The P400 was designed by GEP for the upfit HMMWV. Forged crank, forged rods with fractured cap technology, forged pistons with ceramic coating, thicker decks, improved water passages, hardened valve inserts, plus a unique 3" steel girdle surrounding the bottom end. But to answer your question...

Ken - thanks for the heads-up. I will measure them tomorrow and report back.

Well, why wouldn't my original direct-drive 6.2 starter work? My P400 block appears to have the threaded hole for the starter brace.

Not the 6.2. My new P400 is what the starter is going on.