Quote:
Originally Posted by Dragncar
Its OK to be a smart ass, I know how I come off sometimes. Some have a problem with me giving a opinion and that's fine. My point is you gave your opinion too. Yes you did base it on a build you have done. Your build is admittedly not a high end build, some used parts. Nothing wrong with that.
Thing is, if you can not make 600+ HP on pump gas(E85, 13-1, not really) .264 roller cam with 318cfm heads something is wrong. I mean, its going to unless the cam is 8 deg retarded.(buddys engine)
Your engine has two fours on a tunnel, 1400 cfm of carb with a .275 @ .050 cam and 11.37-1 CR. Its simply going to make 600+ HP unless something is very wrong. You did port them yourself, saving money.
Nothing wrong at all with the power you are making. Just not a high end enough build to give a strong "opinion" as to these Chinese heads are better than our USA Edelbrocks.
The 461 I am building at this moment will not see a pump. It will see weight, ET and MPH and go from there. No used parts, well thought out Sparred little expense. Cam I am using made 815 and 865 HP on pump gas 535 and 505 engines. And will post what it does when ironed out and folks can say what they want no problem.
To me I would need to see a "wow" engine before I would think those Speedmasters are any better. Have not yet I need that before I throw my country under the bus on this.
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Where is the STFU emogee? I am still looking for the post where the OP said he was building an all out high end race engine and sparing no expense? Hmmm. I have a set of the "Chinese" heads and they look great. Far cheaper than the out of the box E-heads and my purchase is simply for use on a street car, not a race engine.
Are these heads perfect out of the box? Are any of them? Any assembled aftermarket head should be broken down and examined. One reason I got the bare heads as I will prep/assemble them to my specs. Could they use some clean up port work? I think that depends on the user and his/her intent on the use of the heads. Stock cast iron heads can use some clean up port work to greatly improve them, but does everyone do that?
I did do a web search to see how many complaints and bad reviews there were on the Speedmaster heads - Pontiac and others. Really didn't find anything that would cause these heads to fall into the "junk" list or "don't waste your money." If they were crap, the complaints would be all over the assorted forums and no one would be buying them. But to the contrary, they got good overall reviews that did point out that these heads all could use some bowl clean-up/blending which was easily done with a sanding roll and not a lot of time involved.
But once again, it is so easy to arm chair your opinion and sound like an expert on heads when you have not even purchased, let alone worked with, a set of Speedmaster heads. When you actually purchase a set, do all your fancy work to them (or pay someone else as I am sure you do), and provide real world dyno numbers either supporting or negating their use on the ultimate build, otherwise STFU.
Thank you to the OP for sharing. Very encouraging and others who buy American will also be thanking you because it'll bring the cost down of those who had thought they had the market share on aftermarket aluminum Pontiac heads and were over pricing them.