The 400 HP number IS NOT on stock injectors and IS NOT possible with stock injectors.

The picture Bill posted (post #5) IS a picture of powdered metal rods in that engine.

 

I have a towing related question. Once everything is said and done. How well will the truck tow? ie. 15,000 lbs up a 10% grade for 5 miles? Or would this just crank up the egt's so high that you would have to pull over and let it cool down? The reason I ask this is, currently I have an e99 7.3 powerstroke with 139,000 miles. And eventually I would like to build it up a little bit. But if I do do this, I still want to be able to use my truck as a truck. Not just a racecar.
Thanks,
Geoff

 

bill new york bombers r slow to answer maybe u can help, if i punch out a 7.3 30 over, can i use stock crank and cam, they make kits at navistar but dont have crank and cam in it

 

There is no need to change anything except pistons if your cylinders are worn enough to warrant a .030" overbore. There is no performance gain from "punching out" cylinders. On an eight cylinder engine you will gain 6 cubic inches with a .030" overbore, but no performance.

Overboring an engine serves no purpose but to clean up cylinder wall wear and taper problems.

 

thanks for the info, in trying to build a motor stoker like a 383 stoker out of a 7.3 so it will be a stroked stoker any ideas

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there is a guy that builds 7.3 that crank 700 hp with just a turbo no programming but i got a price for 17,000 for motor and tranny, i want to do it myself and build a power plant for my truck, please help with any teck and ideas if all this is possible, i want to keep it a road worthy rig

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another teck question i flashed my computer and put new program, can i use a tony wildman tuner on top of that or the 3 way switch i have already, i guess its called stacking programs but wow it def, moves the truck ?

 

See replies in red.

Probably shouldn't muck up Bill's thread with this stuff anymore.

 

At the level I'm at now, I can pull a 14' Trailer and vehicle (about 10K combined) up a 5% grade at 70 MPH running around 1150-1200º EGTs. If I turned the tune down a bit, I could probably pull a bit harder, but I just watch EGTs and roll with it.

I don't use my truck as a racecar, other then maybe stoplight to stoplight. It is a daily driver and daily worker, just like 99.9% of the people out in the real world. I leave the racing stuff to guys like Mike Ontiveros. I'm looking for inexpensive, reliable STREET power.

Take care.

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I don't doubt that a 700 HP engine could be built for $17K. I have serious doubts that it could be done with "just a turbo". That's one heck of an expensive turbo.

In order to achieve 700 HP, you'd need AT LEAST:

350-400cc injectors - $2800
Big single or (more likely) compound turbos - $2500 - $3500
Hypermax (or similar) connecting rods - $2600
Custom ground cam - $800
Head Studs - $500
Fire Rings - (Machine Shop labor)
Main girdle - $2000
Twin HPOP - $2600
Fuel System - $600
Dyno Tuning to make everything run correctly $1000

With no other machining or installation charges, that comes to around $16,400. By the time you add all the gaskets, bearings, and other incidentals, you'll probably be close to $18,000.

Anything less will probably leave you with parts scattered all over the street. Well, maybe your tranny wouldn't survive the build... but that's another story.

We're pushing it trying to achieve 600 HP (really pushing since ours is a PMR engine), but it's more out of morbid curiosity that we've selected the parameters for our build. For 600 HP I'd normally recommend a minimum of forged rods, even if they're just factory.

Take care.

 

Ok. Thanks for the input on that. In the next few months I'll be contacting you for more information on what parts you are using on your build.

 

Keep up the good work Bill. Looking good so far

 

i am in this project and it is great to have u guys help, i have been taken by a tranny company already went threw 4 of them just getting ready to send the last back, this one blew reverse, tired of taken them in and out

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and haven u guys here will save me alot of heart ache, should i just get rid of everything and go with tony wild man 6 position and be done with it and some injectors and a larger turbo, this weeks project is changing out ring and pinion for more gear , going to 4.56