ProComp/Speedmaster aluminum heads

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Well really the question of the thread is are the Speedmasters an affordable reasonable head for the "average Joe"...
 
j par said:
Well really the question of the thread is are the Speedmasters an affordable reasonable head for the "average Joe"...
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Opinions will vary. I think you will have to be your own judge on your combo.
The price is fair. reasonable for trial. better than what you have.
 
j par said:
Thank you I'm well aware of what a homophone is...
Edit: now quit being a homo...lol..:poke:
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My sweet wife of 26+ years can attest I don't lean that way! Stop being a bully.......................
Actually, I'm an old construction worker and it takes alot to get me mad. Picking at and laughing at each other is what gets some of us through a tough days work. I figured that of all the people on this site, you would be the one I could pick on for spelling!
 
fishmens67 said:
what is your opinion on the CNC Speedmaster head as a budget performance head.
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Typical of what you see anymore. Big, blown out bowls and a runner too small to feed it. Oversized valves to fill up the huge bowl.

Last set I did was for a big block. It actually went almost 900 on the dyno which was over a hundred more than I guessed. I had the dyno sheets faxed to me and the numbers looked legit. And the time slips matched what the dyno said.

As far as casting go, they are fine. I've never seen a set of heads like that that don't need a valve job. With a bowl that big, they get a 50 degree seat.

The issue is always the same. You are still using mid 1969's architecture. Without offsetting the intake rocker (and maybe the exhaust...I think the last time I looked at my W2 junk I was thinking about an offset exhaust but why I thought that at the time I don't remember) and raising the port, you are stuck. The small CSA makes air speed go through the roof, so you do things you don't normally do to control it. Everybody and their mother thinks the faster the airspeed the better, but that is just not the case. You need to CONTROL the air going through the port (or, picture the head moving through the air...) and sometimes, more often than not, air speed is your enemy. The flow bench will tell you the port loves airspeed. Sometimes you have to ignore the flow bench. Especially on the exhaust.
 
Mopar Sam said:
My sweet wife of 26+ years can attest I don't lean that way! Stop being a bully.......................
Actually, I'm an old construction worker and it takes alot to get me mad. Picking at and laughing at each other is what gets some of us through a tough days work. I figured that of all the people on this site, you would be the one I could pick on for spelling!
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lol and a :poke:... Thats your sign I'm joking and NOT bullying..?no?
Concrete forman for most my work career, but have done seemingly just about everything...
Voice command saved my bacon. I couldn't spell my way out of a wet paper bag.... I'm damn near a math wizard, but spelling just don't add up!... Sometimes y? Who makes this stuff up!??
I'm really working at a small budget for aluminum heads. At the very least I should be able to get the bear heads with no CNC and slowly get parts for them.
I'm just trying to wait for the right deal.
 
j par said:
lol and a :poke:... Thats your sign I'm joking and NOT bullying..?no?
Concrete forman for most my work career, but have done seemingly just about everything...
Voice command saved my bacon. I couldn't spell my way out of a wet paper bag.... I'm damn near a math wizard, but spelling just don't add up!... Sometimes y? Who makes this stuff up!??
I'm really working at a small budget for aluminum heads. At the very least I should be able to get the bear heads with no CNC and slowly get parts for them.
I'm just trying to wait for the right deal.
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The bullying remark was a joke in reference to some posts made by other members last week! I would personally never consider things said to me or even about me to be bullying. I just do not take myself that seriously! I will be the first to admit that I am a big goofball. In fact a friend and I at work were just talking about how far our immaturity had taken us in life! Take it all in good fun, that is how it was meant. I like getting a big disagree once in a while! By the way, I misspell a lot too do to keys on this stinking laptop not working half of the time. I guess that's what happens when you spill coffee on it. Sorry to have derailed the thread.
 
j par said:
lol and a :poke:... Thats your sign I'm joking and NOT bullying..?no?
Concrete forman for most my work career, but have done seemingly just about everything...
Voice command saved my bacon. I couldn't spell my way out of a wet paper bag.... I'm damn near a math wizard, but spelling just don't add up!... Sometimes y? Who makes this stuff up!??
I'm really working at a small budget for aluminum heads. At the very least I should be able to get the bear heads with no CNC and slowly get parts for them.
I'm just trying to wait for the right deal.
Click to expand...

Confuscious say : NEVER MESS WITH CONCRETE WORKER !!
I`d do cnc anyway, well worth the $ in the long run !
 
famous bob said:
Confuscious say : NEVER MESS WITH CONCRETE WORKER !!
I`d do cnc anyway, well worth the $ in the long run !
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I have poured a lot of concrete in my time too, carried more concrete blocks as a hod carrier than I care to remember. Back when I was "Strong as Einstein and smart as a mule". Or something like that?!
 
Isn't the concrete foreman the guy wearing the hard hat and shiny new boots holding a clip board in one hand and coffee in the other. lol
 
Why the disagree j par, couldn't afford the new shiny boots? or didn't get to hold the clip board. :D
 
fishmens67 said:
Isn't the concrete foreman the guy wearing the hard hat and shiny new boots holding a clip board in one hand and coffee in the other. lol
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fishmens67 said:
Why the disagree j par, couldn't afford the new shiny boots? or didn't get to hold the clip board. :D
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IMG_20190825_162955.jpg

Man I was young...
No I was what you call one of those working Foreman LOL. I had to lead the crew by example. I was always the hardest worker so I could call them pussies... Five of us would knock one of these out everyday. I'm much more enjoyed the big high wall jobs..
97 days til Speedmasters on the wall....
 
yellow rose said:
Typical of what you see anymore. Big, blown out bowls and a runner too small to feed it. Oversized valves to fill up the huge bowl.

Last set I did was for a big block. It actually went almost 900 on the dyno which was over a hundred more than I guessed. I had the dyno sheets faxed to me and the numbers looked legit. And the time slips matched what the dyno said.

As far as casting go, they are fine. I've never seen a set of heads like that that don't need a valve job. With a bowl that big, they get a 50 degree seat.

The issue is always the same. You are still using mid 1969's architecture. Without offsetting the intake rocker (and maybe the exhaust...I think the last time I looked at my W2 junk I was thinking about an offset exhaust but why I thought that at the time I don't remember) and raising the port, you are stuck. The small CSA makes air speed go through the roof, so you do things you don't normally do to control it. Everybody and their mother thinks the faster the airspeed the better, but that is just not the case. You need to CONTROL the air going through the port (or, picture the head moving through the air...) and sometimes, more often than not, air speed is your enemy. The flow bench will tell you the port loves airspeed. Sometimes you have to ignore the flow bench. Especially on the exhaust.
Click to expand...
Big block Chevy ? or stroked big block Mopar. any flow #'s
 
A pair of big block 440 source stealth heads and rockers in great condition came up for sale for $1, 100 locally because they're going to trick flow....
I know I don't need big block heads but this is the vacuum I'd like to get caught in.
 
j par said:
A pair of big block 440 source stealth heads and rockers in great condition came up for sale for $1, 100 locally because they're going to trick flow....
I know I don't need big block heads but this is the vacuum I'd like to get caught in.
Click to expand...
Stealth heads are 499.00 each brand new assembled. IQ52 has thread on them and said they are a pretty good head a budget after some checking and a little bowl work to get the flow up to the advertised #'s.
 
fishmens67 said:
Stealth heads are 499.00 each brand new assembled. IQ52 has thread on them and said they are a pretty good head a budget after some checking and a little bowl work to get the flow up to the advertised #'s.
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The four sets I’ve had on my flowbench max out at 267 cfm. So many better options out there now for big blocks.
 
pittsburghracer said:
The four sets I’ve had on my flowbench max out at 267 cfm. So many better options out there now for big blocks.
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Those are numbers he had before he cleaned them up. I believe he got 20cfm more after cleanup.
I agree there are better choices for a bit more money. But, the Stealth head is a viable option on a small budget.
 
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