Super Stock Hemi Cylinder Head Porting with Darin Morgan

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Thought it was pretty interesting that all that work ($$$$$) was basically not to increase peak and under the curve hp but but to get more usable rpm (higher shift points) after peak, so the engine drops around peak gaining more average power. And that the hemi head basically flowed enough from the start it was port volume holding it back, among other things like valvetrain.
 
273 said:
Thought it was pretty interesting that all that work ($$$$$) was basically not to increase peak and under the curve hp but but to get more usable rpm (higher shift points) after peak, so the engine drops around peak gaining more average power. And that the hemi head basically flowed enough from the start it was port volume holding it back, among other things like valvetrain.
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And why does he do that?? Because RPM is horsepower and horsepower wins races.
 
Newbomb Turk said:
And why does he do that?? Because RPM is horsepower and horsepower wins races.
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It makes sense, you just don't hear many in the more average guy type builds overly worrying about the powerband after peak hp, especially willing to put that amount of time and effort and $$$$. Like a lot of strokers seem to nose over after peak they seem more concentrated on under the curve to peak.
 
Newbomb Turk said:
And why does he do that?? Because RPM is horsepower and horsepower wins races.
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what type of porting would you suggest to increase torque?

i'm building a tugboat to enter the regatta and first prize is a very prestigious and coveted country club membership that includes a trip to a private island to hunt the most dangerous game known to man.

obviously, i'll need all the help i can get.
 
273 said:
Thought it was pretty interesting that all that work ($$$$$) was basically not to increase peak and under the curve hp but but to get more usable rpm (higher shift points) after peak, so the engine drops around peak gaining more average power. And that the hemi head basically flowed enough from the start it was port volume holding it back, among other things like valvetrain.
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That class is port CC limited. It has to not exceed a particular volume. The porters job is to then reshape the port to make it more efficient. To gain cross sectional area (which is what limits RPM), common practice it to machine the intake gasket face and make the port shorter. Charlie Wescott did this so much, that they changed the rules and introduced a limit (they machine up to the valve cover holes, he'd almost mill them away).
 
la360 said:
That class is port CC limited. It has to not exceed a particular volume. The porters job is to then reshape the port to make it more efficient. To gain cross sectional area (which is what limits RPM), common practice it to machine the intake gasket face and make the port shorter. Charlie Wescott did this so much, that they changed the rules and introduced a limit (they machine up to the valve cover holes, he'd almost mill them away).
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Yes I understood all that when I watched the video, I just found it interesting to basically spend $50,000 + per engine plus all the R&D just to extend the rpm of the shift points a few hundred plus rpms but I get why though.
 
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273 said:
Yes I understood all that when I watched the video, I just found it interesting to basically spend $50,000 + per engine plus all the R&D just to extend the rpm of the shift points a few hundred plus rpms but I get why though.
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Because they want to win races, all sense goes out the window. I recall Darin Morgan saying he charges $12K for the intake manifold for one of these engines, so I would hate to imagine what the cylinder heads cost.
 
la360 said:
Because they want to win races, all sense goes out the window. I recall Darin Morgan saying he charges $12K for the intake manifold for one of these engines, so I would hate to imagine what the cylinder heads cost.
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He said there like $100,000 engines, I'm guessing well over half for a pair completed heads with rockers.
 
Have you ever seen the shape of the exhaust port on a SS hemi cylinder head? My close friend and mentor showed me once, blew my mind.
 
Wish Charlie would come back out. Have heard rumors couple times he might.
His shop is little less than an hour down the road from me
Hardest worker I have ever seen.
 
junkyardhero said:
what type of porting would you suggest to increase torque?

i'm building a tugboat to enter the regatta and first prize is a very prestigious and coveted country club membership that includes a trip to a private island to hunt the most dangerous game known to man.

obviously, i'll need all the help i can get.
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Big cubic inches and smaller ports always works for extra torque.
 
junkyardhero said:
excellent. these 302 heads should work marvelously on this 426 stroker, then.
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Yeah probably, I would say that with 426 ci even the big block standard port would be small. So you have some room to make that 302 head really good
 
MOPARMAGA said:
Yeah probably, I would say that with 426 ci even the big block standard port would be small. So you have some room to make that 302 head really good
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excellent. that's what i was hoping to hear. i'll port match them to this "torker" intake i just picked up. by name alone this promises huge potential in power production down low.
 
junkyardhero said:
excellent. that's what i was hoping to hear. i'll port match them to this "torker" intake i just picked up. by name alone this promises huge potential in power production down low.
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Don't forget a 500 cfm carb, can't make good torque without it.
 
273 said:
Don't forget a 500 cfm carb, can't make good torque without it.
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i have this holley economaster 450 that i got in a trade with some funky 8 bolt crank that i 'll be using as an anchor. do you think it's worth the upgrade to a 500? i could probably sell that 450, i hear you don't see them that often any more and they're getting harder to find.
 
Problem with all these Darin Morgan videos to me is it's mostly talking, I wanna see the process.
 
MOPARMAGA said:
Problem with all these Darin Morgan videos to me is it's mostly talking, I wanna see the process.
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Would be nice, probably saves that stuff for his paid seminars, but at least he willing to share quite a bit of his knowledge with people, a lot don't.
 
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