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Discussion Starter #1 (Edited)
On your 7.3 powerstroke on each cylender head has 1 fuel plug. Stock they have 2 1/8" hole going accross the bolt and a 1/4 hole thru the threaded part but not the head. This a bottle neck in your fuel system that every bit of fuel has to run thru before being fired thru the injectors.

By drilling only 1 of the 1/8" holes out to 1/4 in gave me noticable amount of top end power and alot more black Drilling both of the 1/8" holes would risk shearing the bolt off in the head when tightning the bolt back in the head. It is a great " Free mod" that is easy todo.

Doing it required a 1/4" drive ratchet and about 1 hours time. (the 1/4 bit of the ratchet atchually goes into the head of a bolt, just like you would open a diff cover plug but only 1/4 ratchet version.)

Passenger side head fuel plug is located by down pipe and by the firewall, but the downpipe is NOT in the way of accessing the fuel plug.

Access to the driver side head fuel plug requires depending on year of 7.3 and options that came with the truck;
  • removing the belt (full removal is not needed) you just need off so you can remove accessory brackets that are in the way of accessing the drivers side fuel plug,
  • alternator & alternator brackets (94-97's its on the passenger side so your safe, no need to remove it)
  • A/C and bracket or A/C delete brackets depening on if you got A/C on your truck
  • Powersteering bracket. On my 94.5 I didnt have to.
Here is a excellent video showing what to do and how todo it. I HIGHLY reccomend you watch it before trying.

>>>>>> POWERSTROKEHELP.COM - Performance Fuel 7.3 Modifications <<<<<<<



to

Sorry about the picture quailty, It from a cell phone with a light coating diesel.
 

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I know of a lot of high HP trucks and non of them did this. With a stock OBS fuel system you have many other issues that I would look at before this.

Ben
 

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Discussion Starter #3
its been 1.5 months and counting and runs good. Made enough power to beat my buddys BMW M3 till i reved out at around 90-100mph with out NOS. And tied a new audi TT
 

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I may give this a try. I have the truck apart it would take all of 5 minutes
 

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anyone else do this?
 

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if not I will do it tonight and see what i find out when i put the truck back together
 

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I've seen it done. I don't have an opinion on it at this time.
Dirk, no opinion at all hmm.. I guess I will give it a try and see what its all about. I bet those new plugs only cost about 30 bucks.

I like your sig dirk, I take it someone thought you were all talk lol, but hell what are they going to find out here, i hardly even know whats done with your truck
 

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id do it but im to lazy to try n get em out.
 

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Im going to the shop to do this right now, i wont have any results for awhile, I have my engine in pieces and parts all over the county
 

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Just following:thumb:
 

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Dirk, no opinion at all hmm.. I guess I will give it a try and see what its all about. I bet those new plugs only cost about 30 bucks.

I like your sig dirk, I take it someone thought you were all talk lol, but hell what are they going to find out here, i hardly even know whats done with your truck
Yep, he saw my truck and got skeered.... then he saw Budro's truck and ran... :hehe:
 

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Found it
 

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I dont know if there is room on the bolt to drill both, although i was thinking do the bottom 1/4 then for the top i will just find something a bit bigger then whats there. I still have to pull the back one out, I have the motor jacked up and the down pipe is in the way, smashed my hand and got pissed and left...lol
 

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