Papa Wells

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? Might post this in the forced induction section as well.

Thanks!

Papa Wells

Bump..anyone have experience with these heads on a boosted setup?

Rise of the Phoenix

iTrader: (27)

I would think those heads would be a beast on your application. The thicker head decks are a huge plus and they flow well, so it sounds like a win to me.

JakeFusion

iTrader: (7)

I'd go with aftermarket LS3 heads... either TFS or PRC.

LS3 heads love boost and provide a lot more flow than the 247s.

Papa Wells

Already have my intake and cam setup for the cathedral ports or else I would.

Papa Wells

Thanks, that's what I was thinking. I was just seeing if anyone had any hands on experience with them since it's so hard to find anyone running them.

Rise of the Phoenix

iTrader: (27)

Nothing wrong with the cathedral ports, especially those heads. Look in the FI section on here; tons of builds with cathedral port heads that make more power than you'll know what to do with.

Papa Wells

Right, plus I'm not trying to make it an all out race car. Just wanting to have something that I don't have to worry if I decide to try and make 1000rw. I have a brand new set of Advanced Induction 232cc ported 317's that are super nice, I'm just worried about lifting the heads, so I'm trying to sell them and get a set of the PRC 247's.

Rise of the Phoenix

iTrader: (27)

Those PRC 247 heads will do the trick. How much boost are you looking to make?

Papa Wells

Awesome. 16-17psi for now, stock 4L80e with te hd-2 kit going in so if I break the 80e, I'll have it built and then turn the boost up later on. I wish I hadn't of bought the 317's and just waited to get the 247's, I've had some decent offers but nobody is really going after my heads.

Rise of the Phoenix

iTrader: (27)

There are plenty of people running that amount of boost on 317's. Have you asked Phil at AI what he thinks?

Sales2@Texas-speed

iTrader: (5)

PRC 247s would work great for this type of application. We have had a number of customers use them in this setting with great success. The thicker deck allows for a better seal, and the heads move some impressive air in our opinion.

Papa Wells

I haven't talked to him about it, I'll probably give him a call soon though to see what he says. Setups similar to mine have made anywhere from 800-950whp on 16-17psi, and everyone tells me that the 317's don't like that much, although I have seen some that have made over 1000 on more boost than that with them. My tuner doesn't seem to think they will do well. I hate to get rid of them since they are already bolted to the engine (which is ready to go in the car) but I figured if I could sell them and buy the 247's, now would be the time.

Rise of the Phoenix

iTrader: (27)

Yeah, if you can sell them for a good price, then go for it and buy the PRC 247's.

Papa Wells

Great to hear. Hopefully I can get my heads sold and buy some of the 247's.

Papa Wells

That's the plan, I may have to run my 317's but hopefully they will sell. Thanks for the help bud.

Papa Wells

Would you happen to have any dyno results or know of any numbers that certain boosted setups have make with the 247's? Just out of curiosity.

Sales2@Texas-speed

iTrader: (5)

There are a couple I can think of off hand but don't have any dyno graphs to post. I have a customer in the middle east who used a set of 247s on a 408 with a F1 procharger making a little over 900rwhp. We also have a guy up in Illinois with a 418 and a 400 shot of nitrous using those heads.

Papa Wells

Very nice, any ideas on what kind of psi number he is seeing at 900whp? Either way, I trust they would work well. The only reason I'm looking to upgrade is because of the thicker deck. Just worried about lifting heads with my 317's.

Sales2@Texas-speed

iTrader: (5)

He never gave me any boost numbers. I would expect he is around 15-20, but that is just a guess. I have not heard back from him since he let me know what it dynoed.