$929 each at AM. Dont forget you will need head gaskets, new bolts, and you may as well change all the fluids (small but it all adds up) Plus a re-tune on a dyno, I dont know that I would trust a canned email tune, I dont give a shit who writes it, to make the best power from them. By the time all is said and done, probably add a good 600-1000 to the cost of just the heads themselves. Again, this is if YOU do the work (which honestly shouldnt be that hard)
And really, if you are doing heads, you may as well do head studs. Even if you dont NEED them, I would do them anyway.
And yes of course they make power, they are factory CNC ported heads.
probably looking at somewhere around 30whp? Ford claims 50whp between the hot rod cams and the FRPP heads. That doesnt mean 25whp each. They will each, on their own, probably do maybe 30 or so. But as we know, if you do 10 mods that by themselves add 10whp each, you wont end up with 100whp. (diminishing returns...)
Its more than just peak power gains.
You GOTTA stop thinking in terms of just "how much is my number going to go up"
Because you will concentrate on something that pushes your peak number up 50whp, and someone that modded smart but only gained 20whp hands you your ass on a platter because they picked up 20 peak but 40 down low and 50 at redline (just using those numbers as an example)
Heads will make dramatic changes to the power curve. I dont know specifically about the FRPP heads, but speaking just from my experience with a ported head, my semi educated guess would be that you are looking at the car pulling a bit harder everywhere past a little over the bottom end (maybe3k) then pulling a decent bit harder through mid to where the peak USED to be, then pulling and pulllllling and puuuuuuuuuulllllllllllllliiiiiiiiiiiiiiiiing to the rev limit.
*note* Obviously this is appled and oranges here but, Ill use this as an example.
My Forester went from peaking then tapering, to pulling like a freight train towards the rev limit. Obviously that is apples to oranges, as on a 4cyl turbo Subaru motor with a big turbo, heads done like mine are good for somewhere around 60whp at peak. (which on that particular motor, is now close to redline) Obviously you arent going to get that from the FRPP heads on a non boosted car, but it goes to show the dramatic changes heads can make.
Also, when I am talking about the big gains I experienced at the rev limit, please dont mistake that for saying I didnt make more power at the range where the peak USED to be. I made more power over the entire curve.
I would think pretty hard about the expense before you do the heads. By the time all is said and done, you are looking at minimum 1800 bucks I would say, and that is if you do the labor yourself. That is a little less than half what a centri would cost, for 1/4 to 1/5th the gains.
Also please note, I am only speaking of the FRPP head. A more extensively ported head will gain more. Not that the FRPP heads arent ported well. They are just a bit more conservative.
Take this all for what its worth though, like I said, I have no firsthand experience with the FRPP heads, or heads on a 3V at all for that matter.
But I am speaking from general knowledge and firstand experience with worked heads (to one degree or another) SO I gotta think its fairly on point.
I am sure one of my haters (OMG I hate that term) will come in and crap all over it and essentially call me an idiot.
I dont mind being told I am wrong, but some people are just dicks about it. (although most people on this board are VERY cool and generally great guys)