Best aluminum heads out there??
#31
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#32
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When I opened the box's on the two sets of AFR's I got through Bob, I had them in my living room till it was time to take them to Brad, lol
#33
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To the OP, you could always start with the 305's and then if you do upgrade to the 540 down the road, you could send them in to Tony for a little "massage"..
#34
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We have used a lot of afr heads in our builds make great power on a 502-509 we have used both the 315 and the 335 not much difference on the dyno on my 540 i like the 335 a little better but really not much difference
#35
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I had the same exact question. Actually my question to a head porter was "how in the hell am I supposed to get a can ground with no flow numbers?" He laughed a little bit and said "just call Tim at Bullet, he has designed all the cams for the record setting cars with my heads on them without any flow numbers" CFM really doesn't meant anything any 5year old with a Dremel tool can hog out a port make it flow 100cfm more totally kill the air speed in the port and have a motor that can't get out of it own way. If you noticed in this thread almost everyone recommended and AFR head. Well, there is a reason for that. They work very well cause the guy that designed them knows how to design a port. AFR heads make power no doubt. Go find comparable engine build with AFR heads and any other out of the box head AFR will win every time. Compare the CFM/flow numbers between the heads sometimes the same sometimes AFRs are less CFM but yet they make more power. Port velocity is the difference.
#36
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Just so people know, touching on what haxby said, the no longer working for AFR thing happened very, very recently. To be exact, this past OCT 24th/2014. http://speedtalk.com/forum/viewtopic.php?f=1&t=41533
So don't think you are getting a different product now than what you would have just a month or so ago. It's the same and thus all good.
So don't think you are getting a different product now than what you would have just a month or so ago. It's the same and thus all good.
Last edited by SB; 12-01-2014 at 08:59 PM.
#37
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I had the same exact question. Actually my question to a head porter was "how in the hell am I supposed to get a can ground with no flow numbers?" He laughed a little bit and said "just call Tim at Bullet, he has designed all the cams for the record setting cars with my heads on them without any flow numbers" CFM really doesn't meant anything any 5year old with a Dremel tool can hog out a port make it flow 100cfm more totally kill the air speed in the port and have a motor that can't get out of it own way. If you noticed in this thread almost everyone recommended and AFR head. Well, there is a reason for that. They work very well cause the guy that designed them knows how to design a port. AFR heads make power no doubt. Go find comparable engine build with AFR heads and any other out of the box head AFR will win every time. Compare the CFM/flow numbers between the heads sometimes the same sometimes AFRs are less CFM but yet they make more power. Port velocity is the difference.
#39
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Thanks I plan on calling him to buy the entire top end as next winters project, lol based on those dyno threads there are no dummies in your crew, I wish I lived in your neck of the woods, Its 1000 just for a few hours on a dyno around here
#40
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Just so people know, touching on what haxby said, the no longer working for AFR thing happened very, very recently. To be exact, this past OCT 24th/2014. http://speedtalk.com/forum/viewtopic.php?f=1&t=41533
So don't think you are getting a different product now than what you would have just a month or so ago. It's the same and thus all good.
So don't think you are getting a different product now than what you would have just a month or so ago. It's the same and thus all good.