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Old 06-23-2013, 07:50 PM
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Such Thing As A 7.3L Performance Head?

Well, is there?
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Old 06-23-2013, 08:01 PM
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I have not seen any..but it is a good question.
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Old 06-23-2013, 08:27 PM
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I wouldn't think there would be much of a need for one as the rpm's we're dealing with aren't anything like a gas motor.
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Old 06-23-2013, 08:31 PM
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And under boost...air only..the head port locations and shapes are very odd.i have my extra set back from cleaning and have been studying them ironically enough.
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Old 06-23-2013, 08:45 PM
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Ya, I just don't think there would be much need or demand.
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Old 06-23-2013, 10:37 PM
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Other than doing push rods, valve springs and head studs, I've never seen an actual high performance head.
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Old 06-23-2013, 10:39 PM
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Yeah isn't boost how gassers get past air restrictions? The turbo is keeping positive pressure on the intake. I'm sure someone has milled a set. Sounds cool, but crazy expensive and not worth it. Maybe shave a head for compression boost.
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Old 06-24-2013, 03:55 PM
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Performance as is in 3 or 4 valves per cylinder vs the stock 2 valves

I see this as a problem because you would need twice as many lopes on the cam shaft. And more ports in the block for push rods. Unless there was some sort of weird way to have 1 pushrod push on 2 rocker arms, and then you need stronger push rods. I think this is a cool idea and would love to hear the sound of a 32 valve 7.3, but then again thats what a 6.0 is.
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Old 06-24-2013, 04:22 PM
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There are shops that port these heads, but an actual new casting for higher performance... No, there aren't any. It would be cool if there was and there would be a benefit. We see pretty good performance improments through porting.
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Old 06-24-2013, 04:27 PM
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Originally Posted by TireJockey View Post
Unless there was some sort of weird way to have 1 pushrod push on 2 rocker arms, and then you need stronger push rods.
You would use "bridges" to make one rocker arm push down on two valves at a time. Pretty simple. Lots of engines out there like that... One of which is the 24v Cummins.
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Old 06-24-2013, 06:30 PM
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And 6.0 ford...milling a flat head surface nets no comp increase
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Old 06-24-2013, 07:27 PM
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I figured some gain could be had from porting. I bet with computer programs anymore they could pop out a pretty good set of heads for a 7.3, but probably cost you 30k! haha. There just wouldn't be near enough demand for them imo.
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Old 06-24-2013, 07:37 PM
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Originally Posted by 427 fordman View Post
I figured some gain could be had from porting. I bet with computer programs anymore they could pop out a pretty good set of heads for a 7.3, but probably cost you 30k! haha. There just wouldn't be near enough demand for them imo.
Probably not enough demand, at least until the common rail and mechanical injection gets bigger on these engines and even then I'm not sure we'll see it happen. The cummins guys have an aftermarket cast iron head and IIRC that head goes for around $1500 bare. Not terrible. If there was a set of heads available for that price for the 7.3, I would add them to my build if they had proven to outflow a set of highly ported stockers.
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1995 F-250 RC PSD- because race truck
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Old 06-24-2013, 07:44 PM
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Is there a lot of room for porting in our heads? How much material can you remove?
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Old 06-24-2013, 08:14 PM
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Quote:
Originally Posted by ReBilld View Post
Is there a lot of room for porting in our heads? How much material can you remove?
I don't know any specifics on how much room there is before hitting water jackets or how they can modify for larger valves, but the valves are already big enough that they are right up against the cylinder walls as it is in factory form. I've heard of some modifying and being able to run larger valves before.

The ports can take a good bit of porting, but the exhaust side doesn't really need much. Just a good clean up. The intake needs a lot of work..
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Old 06-24-2013, 08:14 PM
 
 
 
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