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I hope that you start a new thread on your project. I'm sure there are many others besides myself who would like to follow your engineering.

I need a couple fenders moved from Halifax PA to Paris KY. Mike Gresham. 859-749-7187.

Say, I would like to see photos of that twin turbo setup.

Ummmmmm......... Rick, I believe that would be Too Much Information.

Joe where on earth have you been? Thanks for the compliment! I am getting closer to installing this thing.

Hey Rick - do you have that thang sold?

John I get all that kind of stuff from McMaster Carr. Google them and they will pop right up. Hope this helps. P.S. - I am still looking for a good pair of CUCV front fenders.

Yes that is probably true. However I am installing a 24-volt 2GPM aircraft pre-oiler pump on a momentary toggle switch to build oil pressure to all bearing surfaces during the glow-plug heating cycle. In addition, I am not turbo-ing the engine so heat break-down will not be a concern either...

Thanks for your post. Although I have already decided to use Rotella T4, I am curious - what exactly are the "benefits of synthetic"?

Rick - you may remember that I am installing a Spinner centrifugal oil cleaner on my engine, therefore I am not too concerned about the quality or effectiveness of the can filter. It is my understanding that the big differences between the brands pertains to the quality and longevity of the...

Thanks Karl for your post. My feelings exactly. And thanks everybody for your opinions. My new engine will not be turbo’ed and I can assure everyone that it will never break a sweat. Probably will never see mud and will only leave the pavement occasionally. So I will stick with Rotella T4 15-40.

I am fast approaching a point in time when I will need to install new motor oil in my GEP P400 engine. I have read the arguments pro and con until my Walmart readers fogged up. So I thought I would start this thread to ask for expert opinions. My P400 long block arrived from GEP in a crate...

Got the GM14020856 brace rod installed between my NP241 and the P400 engine block. Additional details in my rebuild thread.

Made a little more progress today. Got the GM14020856 brace rod installed between the NP241 and the P400 engine block. Also installed the bracket for the new transfer case cable shifter from JB Custom Fabrication...

Got my NP241 transfer case bolted up behind my P400/700R4.

Ditto what Barrman said. The OEM pumps on the CUCV engines were DB2829-4521. There are no magic bullets to improve significant power in the 6.2. One of the main Laws of Nature is - to produce power, fuel must be expended. There is no problem in increasing fuel to the 6.2. The problem is...

I looked back in my early photos and found a good image which shows the cast iron girdle of the P400. Also a recent photo of the inside of the bottom showing the integral main bearing caps.

To my knowledge, there are no new P400 engines available. In the past 4 years I have seen only 1 used P400 on ebay, and it looked like it had been run hard. Mine is not for sale. You may want to reach out to Leroy Linza in Houston. A couple years ago he purchased the last P400 long blocks...

In my opinion, no it is not close to the P400. The ad indicates that it is a remanufactured engine, probably assembled by Jasper or one of the other outfits out there from used parts. In contrast, the P400 engines were developed by GEP to power the new upfit HMMWV which weighs over 15,000...

No, that is a standard 6.5 GEP longblock, not a P400.