Easy bombs? - Ford Powerstroke Diesel Forum
7.3L IDI (Non-Powerstroke) Diesels Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

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Old 05-01-2007, 06:41 PM
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Easy bombs?

Im thinking about picking up a 7.3l F 350 for close to nothing, not sure on the year right now. What can I do it give it some more ooomph? Do they run alright with straight pipe?

I dont know much about running these truck, especially a non turbo diesel, any advice? Im going to be hauling a camper on it and about 3k pounds behind it and going up hill alot so Im expecting good temps.
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Old 05-03-2007, 07:29 AM
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3000 pounds should be no problem for that truck. I had a 93 reg cab and pulled a 8500 pound trailer fine. I wasn't winning any races but it will pull. As for mods I'm sure a new airbox and larger exaust will help it. Good Luck
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Old 05-03-2007, 07:55 AM
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Ok, are these motors ok with straigh 4 or 3.5'' pipe?
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Old 05-03-2007, 08:09 AM
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That I don't know. Mine was a stock 4x4 nothing special.
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Old 05-03-2007, 09:18 AM
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You best bet would be no larger than a 3.5" downpipe, and then a 4" straight exhaust (if you don't mind some noise). Pulling 3000 lbs should not be a problem for the truck you mentioned. By opening the downpipe some, you will let the engine breathe better, yet still provide a small amount of back pressure that will give you a torqier feel.

If you plan on towing a lot, I would also recomend a set of gauges, or at the very least as trans temp gauge if it's an auto.

Oh.. one more thing.

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Old 05-03-2007, 10:32 AM
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its an old 7.3 idi only 1 year of em had turbos can can gedt a turbo kit for about 3-5 grand but and intake and exhaust and turning up the fuel screw a bit will give you all the power you need
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Old 05-06-2007, 03:11 PM
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I learned today that its a 6.9 and its a 84. Can someone please move this thread to the 6.9 section please.

Where is the fuel screw?
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Old 05-06-2007, 06:17 PM
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its in the injector pump to give more fuel to the cylenders i had an 87 6.9l i was alright truck for pulling i have a 4000lbs stock trailer empty and it got the job dun but like stated before it wasnt winning any races. the injector pump is on the top of the block infront of the air cleaner an their is a triangle door on the passanger side you take that off and some fuel will come you and you put an allen wrench and "loosen" it if you will it will open the passage for fuel so more can flow and every 1/2 tur will add about 5-10 hpnothing serious but you'll feel the diffrence
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Old 05-06-2007, 08:55 PM
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the old 6.9 sound bad azz with dual 2 1/4 inch strait pipes I mean windshield shatering bad AZZ!!!!!!!! and true dual stacks sound even better... turn the injector pump up and make your self an open element air cleaner for it and thats about all shes gona give ya... my buddie has one ITS SLOW AND ITS UGLY but it sounds whicked and it will pull any thing you hook it up to (how fast is another storie)
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