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Ken; Yes I test-fit the fan before I had the spacer fabricated. Will have about a half-inch clearance. I’m waiting on a v-belt for the compressor tomorrow and then I will complete the front of the engine and post photos. I was also concerned that the compressor belt might hit the lower...

Yes.

After aligning all pulleys, I installed new Gates belts. #7448 for the power steering, #7575 for the drivers side alternator, and #7483 for the passenger side alternator as specified in the TM and in the SS Wiki. However after installing the belts and tightening them to the correct tension, I...

I changed my steering column and door cylinder key locks. However before a thief gets to the truck, he/she must get into my high-security warehouse with motion detectors, 24/7 live camera monitors, and audio monitoring. But before all of that, they must get by me with my special security tool -

I have to lock my steering wheel with a chain every time I take Ms Daisy to the Piggly Wiggly in Druid Hills.

I never drive my M1028 when it’s raining. I don’t like it when my tires get slightly damp. ;D

Well I have encountered another issue with the CPI kit. The kit comes with a special cast pulley which bolts inside the OEM crankshaft pulley, along with a 1/4" steel spacer to position the CPI pulley just outside the OEM pulley to align with the Sanden compressor. To test the alignment, I...

The fuel inlet nipple on all DB2 mechanical injection pumps is 7/16”-24 inverted flare.

OK I hit my first snag with the CPI A/C compressor brackets. After getting the rear bracket bolted to the front of the passenger head, I moved on to install the front bracket. This piece is a CNC-cut shape with a stiffener welded along the bottom edge for additional strength. It is held in...

Curt - see post 253 - 260. The headers are from Stans in Auburn, Washington. http://www.stans-headers.com/

I am currently finishing up the front end of my P400 engine, checking the alternators and power steering alignment, and it occurred to me that it might be helpful for some of our junior members to understand why belts squeal and wear out quicker than they should. And then explain what to do to...

OK, the CPI A/C bracket kit has been bead blasted / painted and is ready to install. The kit consists of a rear A/C compressor bracket, a front bracket, an adjustment arm, a crankshaft pulley and spacer, and a bag of bolts, nuts, and spacers. There were no instructions, only a packing list and...

I consider rear disc brakes one of the best improvements I have made on my M1028. It was the first thing I did when I got the truck in 2010. I bought my kit from TSM in Colorado. It included the 1978 Cadillac El Dorado calipers which have the emergency brake option. My truck will stop on a...

Thanks King. I can't speak for Rich's issue with the blown-out valve cover bolt hole, but I understand he rectified the issue satisfactory. If I remember his thread, he received a Dalton Foundry casting instead of a Navistar. I believe I may have received one of the last Navistar castings on...

Because I have a new P400 I will try to answer for Rich. The P400 long block was available as a new crate assembly from GEP, the manufacturer of the HMMWV. The engine was designed and put into production for the new heavier, upfit armored HMMWV, however GEP lost the government contract to...

Now..........you are educating yourself. Keep going.

If I had not found the P400, I would have probably got one of those Optimizers from Bostic in South Carolina. That's who you are referring to, isn't it? I would still talk to Rich before I did anything. He can tell you the right questions to ask at Bostic. Git 'er done.

You can certainly do as you choose, however I strongly urge you to slow down and learn as much as possible about the optimizer castings. There were different castings which were better than others. Like I said, Richingalveston has a world of knowledge and experience on optimizer castings and...

There was an article I saw somewhere which detailed the differences in evolution of the 6.5 blocks. I remember there were several years of problem castings, but seems like there were certain production years which were the best. Since you are not going to turbo it you shouldn't have too much...

thank you!