PRC 247cc heads for boost?
02-04-2014, 07:27 PM
#1
On The Tree
Thread Starter
PRC 247cc heads for boost? Hey guys. I've got a 408ci iron block with 317 heads and an F1-A ProCharger, looking to make 800ish rwhp and later on 1000+rwhp, and I'm looking into a different set of heads. I've been looking at the Texas Speed PRC 247cc heads which have a 3/4" deck thickness, and seem to flow as well, if not better than many other aftermarket heads. My only concern is that I can't seem to find anyone using these on a boosted application, or any reviews at all really.
My question is, has anyone used these on a boosted setup, or does anyone know if these would work well with what I'm wanting?
Thanks!
My question is, has anyone used these on a boosted setup, or does anyone know if these would work well with what I'm wanting?
Thanks!
02-05-2014, 11:39 AM
#3
its got a 3/4" deck with solid flow numbers. they are a good head for the money. Im going to run their small bore head on my car. If you spend more money on another set of heads will you make significantly more power? probably not a substantial amount but it all comes down to what you can justify. i cant see spending hundreds more when you can turn that jam **** a lil more and make up the difference. Heads are a lil less important in FI, the 3/4 deck is the selling point IMO
02-05-2014, 11:47 AM
#4
On The Tree
Thread Starter
its got a 3/4" deck with solid flow numbers. they are a good head for the money. Im going to run their small bore head on my car. If you spend more money on another set of heads will you make significantly more power? probably not a substantial amount but it all comes down to what you can justify. i cant see spending hundreds more when you can turn that jam **** a lil more and make up the difference. Heads are a lil less important in FI, the 3/4 deck is the selling point IMO
02-06-2014, 08:43 AM
#6
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They are a good head for boost. All of the same key features as say an AFR or TFS head you want to see on a head going on a boosted application. Good flow numbers as well. Like mentioned above, flow numbers aren't as critical with boost but you aren't giving any up to the other guys anyway. Why spend the extra money to do the same thing?
02-06-2014, 09:48 AM
#7
On The Tree
Thread Starter
They are a good head for boost. All of the same key features as say an AFR or TFS head you want to see on a head going on a boosted application. Good flow numbers as well. Like mentioned above, flow numbers aren't as critical with boost but you aren't giving any up to the other guys anyway. Why spend the extra money to do the same thing?
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02-07-2014, 06:40 PM
#10
few reasons i bought my PRC's.
obivously the 3/4 deck and the extra insurance.
the fact that i can still use them on a 6 bolt block
They are awesome heads with great work done on them.
For my F1 build....anything that helps make more NA power is a good thing because it offsets the parasitic loss that the blower sucks out of the motor. i would not give a **** if they only net 20 hp. that 20hp can be used to turn that damn blower a bit faster.
obivously the 3/4 deck and the extra insurance.
the fact that i can still use them on a 6 bolt block
They are awesome heads with great work done on them.
For my F1 build....anything that helps make more NA power is a good thing because it offsets the parasitic loss that the blower sucks out of the motor. i would not give a **** if they only net 20 hp. that 20hp can be used to turn that damn blower a bit faster.
02-10-2014, 08:33 AM
#11
On The Tree
Thread Starter
02-10-2014, 08:34 AM
#13
On The Tree
Thread Starter
few reasons i bought my PRC's. obivously the 3/4 deck and the extra insurance. the fact that i can still use them on a 6 bolt block They are awesome heads with great work done on them. For my F1 build....anything that helps make more NA power is a good thing because it offsets the parasitic loss that the blower sucks out of the motor. i would not give a **** if they only net 20 hp. that 20hp can be used to turn that damn blower a bit faster.
02-10-2014, 10:14 AM
#16
On The Tree
Thread Starter
Mine are advanced induction fully ported 232cc heads, stainless valves, dual springs, etc. LS9 head gaskets that are copper coated, arp studs. I have an f1-a ProCharger, and nobody is offering me any reasonable amount for my 317's so it's looking like I'll have to keep them. I just really hope they don't lift. I'd like to be able to make at least 900 with mine.
02-10-2014, 10:14 AM
#17
On The Tree
Thread Starter
Awesome, I have the ls9 gaskets as well that I copper coated for some extra insurance. Mind sharing hp numbers? I'd like to know
02-10-2014, 10:23 AM
#18
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I have the PRC 255 6-bolt heads on my new engine (2013 build) in my sig. I love these heads. Very good for the $$$ IMO.
As far has the 317's, we have them on a forged 6.0L and have had a LF 85mm at 26psi and 22* timing on E85 and the heads did not lift. Thats north of 1150whp. ARP studs and LS9 gaskets. Id say it is at its limits for sure as far as lifting the heads.
Good Luck.
As far has the 317's, we have them on a forged 6.0L and have had a LF 85mm at 26psi and 22* timing on E85 and the heads did not lift. Thats north of 1150whp. ARP studs and LS9 gaskets. Id say it is at its limits for sure as far as lifting the heads.
Good Luck.
02-10-2014, 12:37 PM
#19
On The Tree
Thread Starter
I have the PRC 255 6-bolt heads on my new engine (2013 build) in my sig. I love these heads. Very good for the $$$ IMO.
As far has the 317's, we have them on a forged 6.0L and have had a LF 85mm at 26psi and 22* timing on E85 and the heads did not lift. Thats north of 1150whp. ARP studs and LS9 gaskets. Id say it is at its limits for sure as far as lifting the heads.
Good Luck.
As far has the 317's, we have them on a forged 6.0L and have had a LF 85mm at 26psi and 22* timing on E85 and the heads did not lift. Thats north of 1150whp. ARP studs and LS9 gaskets. Id say it is at its limits for sure as far as lifting the heads.
Good Luck.
