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Wow, that’s crazy. At least you won’t get any speeding tickets.

What makes you think the stock injector angle from Cummins is not good? MRAP charge air cooler should be OK, as an ISL engine equipped MRAP was 400hp.

The engine draws fuel off the top of the filters, this is so any water settles to the bottom and is not utilized. So, it only takes a whif of air and it loses prime. You have changed a lot of stuff. New doesn't always mean good. There is more than one person here who also could not find...

All I have is a stock truck with a broken back window (Detroit edition). All of you are way cooler, I’m just here for the welding advice. I just tried thanking my own post amd was unable to, how disappointing. Where’s the suggestion box?

Watch out for smart people.

Go manual and row some gears! If you get one with a range selector, you can have 4 speeds in reverse. How cool would that be to see a 9-ball shifting gears while going backwards? That alone would pick up chicks all day long.

My un-official research from 3rd party says Bosch rates the MW for max 50hp per cylinder. Having a pump flow tested on a bench would be the only way to know, as that is exactly what having a pump "flowed" or "benched" does. The MW pump is also common on DT466 engines, and they can get 400hp...

Be careful of opinions. I personally doubt the MW will flow 400hp of fuel and have yet to see that, maybe it does, can be verified by having the MW pump bench tested for flow output at max fueling rate. I think the MW pump is 10mm plungers, as where a P-7100 pump is typically 12mm plungers. A...

Yeah, yank it and go jump in back with all the corn dogs.

Stalled on the 400hp ISL transplant because a like-new ISX-15L Signature 600hp fell into my lap. Just undecided on trans and transfer case if I go ISX, don't want a 1:1 T case and have the truck go slower top speed than stock, with a bigger engine. The 13 speed Roadranger trans I have is rated...

If it is on, I may put $100 on one of the trucks...

Do I smell an 8.3 vs 250 event? Sure, it is all about traction, but you know what’s going to happen regardless if the 8.3 takes the 250 for a walk.... If this is on, I may fly down for it (anything to avoid replacing my back window).

14.00 or 16.00 is the tire sidewall profile height. So if you start with a 20” rim, and add 14” x 2 (top and bottom), you get 48”. With a 16 you’ll get 52”. I think actual measured is 49”/53” respectively, when new. The 395’s use automotive tire sizing. Width/profile % of width - rim...

I’d also suspect pressure issue from your description, of which there are external pressure test ports to check. On one like this, I would arrange to have an Allison tech look at it for at their place. Several people have had good luck in doing so. They may be able to find a quick fix vs...

You should replace the soft fuel suction lines regardless if you have not yet, they have a near 100% failure rate at this age. Numerous members have tested them the way you have, and they don’t bleed externally, but will still suck air. Also, the fuel selector valve is a known air leak area...

People said the same thing when distributor points went away, yet we all magically adapted to the latest deal. For heavy duty engines, a J1939 code reader will get you through most stuff. For vehicle side stuff of off-road equip, it will take their proprietary scan tool. When people say...

https://m.youtube.com/watch?v=DflvWF_cw_k

https://m.youtube.com/watch?v=CkbeOQtD4Wc I need to get Simp one of those CAT hats.

Done yet? Bring it to the Yacht Club, tomorrow @ noon.

Mos, It looks great. It is easy for us to throw bolts and wrenches at you from our arm chairs while you work on it and we don't. Not a lot of people here have deep dove into the 8.3's, so this is interesting. They are usually pretty robust engines, and yours has some pretty unique failures...