Any news on aftermarket cylinder head

The best head I have done flowed around 218 cfm on the intake at around .550 lift. This is with Haisley 1.940" intake valve a zz intake and a LOT of porting. This head with stock valves will flow around 250cfm at less lift with stock valves. With larger valves and more porting I believe 300cfm+ will be possible. I will make sure there is plenty of meat for people to get carried away with. With around a 300cfm ceiling over a 147cfm oem intake. That is double the airflow! As to whether or not you need it, that is your call. I don't have the dyno sheets yet to compare.

On the cost basis here is what I spent on my head
zz intake 1200
Haisley valves 450
machine work for larger guides/seats 600
machine intake 300
fix head from blowing through pushrod holes 500
20+ hours porting free for me.
cost of the head 600
springs retainers and locks 549

around 4200 not counting the cost of my porting time. All of this for 218 cfm. If I had filled the head, I would have spent a lot less but it would not have been street friendly. If the head becomes very popular, it will allow it to become more affordable.
Most vendors rape the customer until competition arrives. The first run factoring in the tooling and mold costs will carry a hefty price tag. I still will keep it under the cost of head like I have described. As quantities rise, I will get the price as affordable as I can.

A side note, I can remember people selling 50hp power pucks for $500 and $59 marine bolt on cams for almost a $1000. Funny how things change.

Zach
 
2Tone12V said:
So is this head going to flow a bunch more air than a ported and polished head? I just don't see how these things can be worth it unless the entire head costs less than a head, resurface, and port and polish job of a stock head. What are the advantages? Is it necessary AT ALL on a street truck?
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have you ever messed with gassers or have you always messed with diesels?

once you've gone from ported stock junk to a true aftermarket head, you'll never want to mess with stock junk again
 
I don't think zach would be putting this kinda work into a head that flows the same as a stock ported head. It wouldn't be worth it.
 
Hamilton Cams said:
The best head I have done flowed around 218 cfm on the intake at around .550 lift. This is with Haisley 1.940" intake valve a zz intake and a LOT of porting. This head with stock valves will flow around 250cfm at less lift with stock valves. With larger valves and more porting I believe 300cfm+ will be possible. I will make sure there is plenty of meat for people to get carried away with. With around a 300cfm ceiling over a 147cfm oem intake. That is double the airflow! As to whether or not you need it, that is your call. I don't have the dyno sheets yet to compare.

On the cost basis here is what I spent on my head
zz intake 1200
Haisley valves 450
machine work for larger guides/seats 600
machine intake 300
fix head from blowing through pushrod holes 500
20+ hours porting free for me.
cost of the head 600
springs retainers and locks 549

around 4200 not counting the cost of my porting time. All of this for 218 cfm. If I had filled the head, I would have spent a lot less but it would not have been street friendly. If the head becomes very popular, it will allow it to become more affordable.
Most vendors rape the customer until competition arrives. The first run factoring in the tooling and mold costs will carry a hefty price tag. I still will keep it under the cost of head like I have described. As quantities rise, I will get the price as affordable as I can.

A side note, I can remember people selling 50hp power pucks for $500 and $59 marine bolt on cams for almost a $1000. Funny how things change.

Zach
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I'm not against this by any means so don't take me the wrong way. I hope it works out for you and everyone. But with what you put above. All this is going to be included in purchase of one of these heads?

Stock head $500
Resurface $100
Port and Polish $???

So you have $1000-$1400 into one

Whats the bare billett head gonna cost? My point is unless your including big Haisley valves, intake manifold, etc. Your comparisons aren't comparable. But I am also not totally familiar with what you are wanting to do with them. But for a street truck I just don't see them being friendly enough on the pocket book. Dont see any way that they can be bought for less than the above cost.
 
BgBlDodge said:
I don't think zach would be putting this kinda work into a head that flows the same as a stock ported head. It wouldn't be worth it.
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No I know that. But what I am saying. Is if these are geared for street trucks. You can't get enough air through a stock head thats ported? I mean people are making 1500 hp with a factory head ported and polished. If the head is to provide more air then I don't see it being near worth it. A street truck has all the things is needs in a stock head if you port and polish.
 
Honestly, am I totally missing something? Sorry for all the posts. I think I need to go home. I'm trying to think to much all at once here.
 
yes, he's not making a billet head... he's making a cast replacement that has relocated ports, water jackets, etc. so get rid of the horrible flowing ports designed for an industrial application turning 1800rpm

call a high end cylinder head shop and ask them what it would cost to cut the plenum off, do an all-out port job w/ a trick valve job, etc.

just because you can make 1500hp at 175psi of boost and 14.5:1 compression doesn't mean making that same power at 80psi of boost and 17:1 compression wouldn't be a whole HELL of a lot more drivable, easier to get on the turbos, etc.
 
Exactly. Just cause your making 1500hp on a stock ported head doesn't mean your making it efficiently. With a bigger head you could most likely run a smaller set of turbos to improve spool up and still make the same power all while being easier on the rest of the engine.
 
Precisely...a 12v that lights turbos better than a CR!!! I think I just J'ed in my P's!
 
Forrest Nearing said:
yes, he's not making a billet head... he's making a cast replacement that has relocated ports, water jackets, etc. so get rid of the horrible flowing ports designed for an industrial application turning 1800rpm
Click to expand...

I knew I had to be missing something. Makes more sense now. Thanks
 
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