I wouldn't expect to hear any different from someone who sell's them......They would NOT EVEN BE CLOSE
JOE SHERMAN RACING ENGINES
Dang, do you know who you are talking about?I wouldn't expect to hear any different from someone who sell's them......
Muscle Mustangs & Fast Fords did do a head swap only comparison.2500rpm -6000rpmI wouldn't expect to hear any different from someone who sell's them......
It would be interesting to see a non-biased dyno Test, Say a Factory 5.0 short block, Performer RPM, and a simple E303 cam, between the 165's and the GT-40X heads. Out of the box parts and no Ringers......
I'd be willing to bet it would be pretty darn close and neither head would run away.
Then apply the $300-$400 savings you realized with the Gt-40x heads into some bowl and port work..........
Got to love AFR's marketing !!!Dang, do you know who you are talking about?
Joe Sherman does not need to come here to harp AFR heads. He's simply stating what he has personally observed. He's been chasing horsepower for over 40 years, and doesn't need to spam this message board to get business!
The Motorsport GT40-X head isn't even in the same ballpark as the AFR.
Some people like to -hate- the AFR since they are so popular... but they got popular for a reason. They are GOOD!
I purchased my first set of AFR heads back in 1995. They were a set of 195 Chevy heads for a 383 I was building for a street rod. They came in and I was AMAZED! The CNC port work looked AWESOME. I had never seen a head that literally needed NOTHING DONE TO IT. I had taken the grinder to every set of heads I had ever purchased.... until this set. It was great! Here was a set of heads that you could literally take out of the bag and install straight onto the engine!
Back then, I ordered straight from AFR, and they went through all the options over the phone... drilled for temp gauge, springs, retainers, valves, etc... and they came with my name hand written on them with a Sharpie. They had no plans on ever producing a Ford head back then. (I asked them) But, once the Fox body mustang really took over, they jumped right in.
To this day, over TEN years later, the competition has still not caught up! Some offer limited CNC offerings, but the price is high. AFR has GOOD heads at EXCELLENT prices.... once the quality of the port work is taken into consideration.
Only bad side... You used to have to be good with a grinder to be one of the FAST cars, but now, all you need for a DAMN good set of heads is a valid credit card!
Joe Sherman isn't going to tell you a load of crap in order to sell you a set of heads. He is GRACIOUSLY donating some of his time to come on here and help people out. I would suggest, that when Joe speaks, you LISTEN.
GT40 X heads are flat out JUNK compared to the AFR. That's just how it is.
I'm curious to see the test, do you have a link to it? plus your numbers aren't adding up. Based on heads only the AFR's at about $1400 = 3.53 per hp and the GT-40X's I'm talking about are $1050 = 2.97 per hp.........LOL Just poking !!Muscle Mustangs & Fast Fords did do a head swap only comparison.2500rpm -6000rpm
Mild hyd roller, rpm air gap intake
GT40 353HP AFR 165 396HP
GT40 363TQ AFR165 378TQ
Cost per hp gt40 $21.25 afr165 $14.43 your $300-400 saving can go towards the NOS kit ;^)
AFR165 are a good value, period
In that article, their cost per HP was based on the INCREASE in HP, from the stock heads, which made ~300hp. But that article used the GT-40P's, not the X's, a much different head.I'm curious to see the test, do you have a link to it? plus your numbers aren't adding up. Based on heads only the AFR's at about $1400 = 3.53 per hp and the GT-40X's I'm talking about are $1050 = 2.97 per hp.........LOL Just poking !!