Time for a race head! BR, AMS or JAM?
I think that pictures speak for a thousand words! This will also help the OP on its original inquiry! Which head to get?
A very important aspect is that we can use those pictures as a benchmark of what you should expect when you receive your head.
Here is one good example of a detailed picture.... hope that TTP does not mind me posting this picture.

A very important aspect is that we can use those pictures as a benchmark of what you should expect when you receive your head.
Here is one good example of a detailed picture.... hope that TTP does not mind me posting this picture.

LOL TTP loves that pic. Shoot i thinks its the most posted pic ever on evom
Which is why I asked about the Cossi head ... asked him why he didn't have it in his car, and he told me he didn't like it for "his" car, but should do wonders on mine. I asked him which head he was running... He told me "Buschur". I told him thanks Dumb ***, and made my mind up at that point!
I agree that using a shop car as proof that something works is not the best place to look for results. On that same note though there are a LOT of cars out there that have been built that never make it to the race track to show what the shops can do. Actually some of the biggest HP cars we've built have never been drag raced, it's a shame actually.
True, good visual closeups do reveal a great deal about attention to detail (or a lack thereof). Just remember however that the 'book' cannot be judged entirely by its cover. The flowbench gives a good idea of what happens when it's on the car, and that shiny machine work is no longer visible.
Wow! I am sorry if that was misleading!
I was trying to say that a paragraph of tolerances, work done, 4 angle job, +1mm valves, flowbench numbers, etc... it is good and needed to make the decision on what head to get!
It just that it will be better to have a visual closeups (like the picture I posted) of what you will be getting with some written results like Ted B is highlighting.
I think that there is a lot of relevance to the topic!
I was trying to say that a paragraph of tolerances, work done, 4 angle job, +1mm valves, flowbench numbers, etc... it is good and needed to make the decision on what head to get!
It just that it will be better to have a visual closeups (like the picture I posted) of what you will be getting with some written results like Ted B is highlighting.
I think that there is a lot of relevance to the topic!
Agree'd....
And for that reason I could care less about a shiny part that's showcased here on EVOm. What I do before I buy something I look for the horror stories and successes and what the seller does about addressing any issue's it might have. Having someone say look a 1,000 HP piston, doesn't make it a 1,000 HP anything till it gets ran for a while and doesn't have any issues! Plain and simple!
True, good visual closeups do reveal a great deal about attention to detail (or a lack thereof). Just remember however that the 'book' cannot be judged entirely by its cover. The flowbench gives a good idea of what happens when it's on the car, and that shiny machine work is no longer visible.
I was typing as you submitted your message, so I didn't see it. And pistons have nothing to do with a head. I read what you wrote now, and I see where you're coming from, but at the time I wrote it, your clarification wasn't there.
I wonder if I were to post a flow sheet, how many of you would be able to decipher what it means? I would say what is being said about the data is sometimes a good thing..but, mostly to just the person doing the work...it means nothing if your just going to stare at numbers, The knowledge I have seen in my customers is you know that your supposed to be looking for the .500 number, and it should be larger then the next guy. When in reality, the .500 number means almost nothing, although it means something, but you'll never have a cam that big. And the highest flowing head is not always best for your application. A guy with 500whp doesn't need the same head as a guy with 800whp...That is when the shops reputation, cars that run good running there products and the visual quality of there product shines..that is something even the layman can see, and you don't need to understand anything about the internal combustion engine to know and understand it. The man or woman putting your combination together is the one that needs to be in the know...not everyone needs a +1 valve and a race port, or even the chambers done. Your pay for what the person you trust doing your work thinks works for you...from there experience, with your particular combination.
I have seen heads that look like Ray Charles and Stevie Wonder tagged teamed it, flow incredible at .400-.500 lift and run like a dog with flees on the car. We have also seen beautiful race heads like our 2JZ program that had great flowing heads sometimes wouldn't pull the MPH we were looking for..I can tell you that the head we ran 215mph flowed less then the one we ran 211!
Pics of the HeadGames/AMS head...no silly stages, just increased horsepower


I have seen heads that look like Ray Charles and Stevie Wonder tagged teamed it, flow incredible at .400-.500 lift and run like a dog with flees on the car. We have also seen beautiful race heads like our 2JZ program that had great flowing heads sometimes wouldn't pull the MPH we were looking for..I can tell you that the head we ran 215mph flowed less then the one we ran 211!
Pics of the HeadGames/AMS head...no silly stages, just increased horsepower


I've never met this guy from Headgames but I will say I am in 100% agreement with everything he just said. The head work does look good.
Posting flow bench data is a waste of time. We will not give out flow bench numbers. We use a GKN flow bench, everyone else uses a SuperFlow. Superflow numbers compared to the GKN bench are like comparing Dynojet numbers to Mustang Dyno numbers. So giving out numbers unless all the heads are flowed on the same bench are worthless.
The example of looking at flow at .500 lift is awesome. I don't know how many heads I have had come through here with rediculously high claims that flowed like crap on the bench through the entire lift range except up around .500 lift. As Headgames said, who cares, no cams go there anyway and if the entire rest of the lift range sucks you are not going to go fast, forget it.
Actually I disagree with one thing. I think that the combustion chamber work is crucial. We also only offer "one" head for the EVO, we call it our Stage 3 head which means it gets the works. Lettuce, ketchup, mustard, mayo, pickles and our special sauce too
Posting flow bench data is a waste of time. We will not give out flow bench numbers. We use a GKN flow bench, everyone else uses a SuperFlow. Superflow numbers compared to the GKN bench are like comparing Dynojet numbers to Mustang Dyno numbers. So giving out numbers unless all the heads are flowed on the same bench are worthless.
The example of looking at flow at .500 lift is awesome. I don't know how many heads I have had come through here with rediculously high claims that flowed like crap on the bench through the entire lift range except up around .500 lift. As Headgames said, who cares, no cams go there anyway and if the entire rest of the lift range sucks you are not going to go fast, forget it.
Actually I disagree with one thing. I think that the combustion chamber work is crucial. We also only offer "one" head for the EVO, we call it our Stage 3 head which means it gets the works. Lettuce, ketchup, mustard, mayo, pickles and our special sauce too
I've never met this guy from Headgames but I will say I am in 100% agreement with everything he just said. The head work does look good.
Posting flow bench data is a waste of time. We will not give out flow bench numbers. We use a GKN flow bench, everyone else uses a SuperFlow. Superflow numbers compared to the GKN bench are like comparing Dynojet numbers to Mustang Dyno numbers. So giving out numbers unless all the heads are flowed on the same bench are worthless.
The example of looking at flow at .500 lift is awesome. I don't know how many heads I have had come through here with rediculously high claims that flowed like crap on the bench through the entire lift range except up around .500 lift. As Headgames said, who cares, no cams go there anyway and if the entire rest of the lift range sucks you are not going to go fast, forget it.
Actually I disagree with one thing. I think that the combustion chamber work is crucial. We also only offer "one" head for the EVO, we call it our Stage 3 head which means it gets the works. Lettuce, ketchup, mustard, mayo, pickles and our special sauce too
Posting flow bench data is a waste of time. We will not give out flow bench numbers. We use a GKN flow bench, everyone else uses a SuperFlow. Superflow numbers compared to the GKN bench are like comparing Dynojet numbers to Mustang Dyno numbers. So giving out numbers unless all the heads are flowed on the same bench are worthless.
The example of looking at flow at .500 lift is awesome. I don't know how many heads I have had come through here with rediculously high claims that flowed like crap on the bench through the entire lift range except up around .500 lift. As Headgames said, who cares, no cams go there anyway and if the entire rest of the lift range sucks you are not going to go fast, forget it.
Actually I disagree with one thing. I think that the combustion chamber work is crucial. We also only offer "one" head for the EVO, we call it our Stage 3 head which means it gets the works. Lettuce, ketchup, mustard, mayo, pickles and our special sauce too


edit**damn you Eric!!








