Jason 98 TA

iTrader: (4)

With all the recent talk about "new cylinder head" stuff going around online I thought it would be a good time to tell everyone how the PRC castings compare to the competitors' cylinder heads.

Cathedral Heads:

We are currently expanding our cathedral cylinder head lineup to include off-set rocker, big runner cylinder heads. While we currently offer and stock the PRC 215, 227, & 237cc cylinder heads, we will also be adding several off-set rocker 245 & 255+cc runner configurations very soon! The rocker arms will be offset to remove the pushrod restriction of the conventional location.

As always, the PRC cathedral heads will feature stock-length valves and a PRC double spring kit with TITANIUM RETAINERS. All of the PRC cathedral heads will, as always, accept factory GM rocker arms without any issues. With stock-length valves, you don't have to worry about excessive valve weight causing valvetrain issues at higher RPM.

The current version of the PRC 227cc cathedral head is available in both small chambers (small bore) & large chamber configurations. The small chamber 227 cylinder head is the same head currently being run on the TSP 9.66 heads/cam record holder '98 Camaro.

We've recently updated our chamber configurations and will now be offering both the PRC 215 and 227 cylinder heads to clear our Tsunami, MS3, and MS4 camshafts without requiring valve reliefs! Just specify when you place your order!




LS3 Rectangle-Port Cylinder Heads:

As everyone knows, we're currently working to wrap up several different aftermarket casting LS3 port configurations. We expect to have three different ports available in the upcoming months! These cylinder heads will allow for different chamber sizes & piston-to-valve clearances, allowing our customers to run a wider variety of camshaft configurations!

THE LS3 RECTANGLE PORT WILL BE PRICED THE SAME AS THE PRC CATHEDRAL HEADS!!




LS7 Rectangle-Port Cylinder Heads:

Recently, we've been working on tooling to begin PRC LS7 cylinder head production. As with all of our PRC castings, we will keep the pricing very affordable. Look for these combos to price out similar to the current GM LS7 casting PRC ported heads!

Below are some screen shots of our CAD data for everyone to checkout!





As always, you can count on PRC to sell our heads with the best components possible in our standard package. We will not be offering PRC cylinder heads with steel retainers or other cost-cutting items in an effort to confuse the consumer. PRC heads come standard with double PRC springs, stainless valves, titanium retainers, bronze guides, and are decked to the customers' specs!

PRC cathedral heads are currently priced at $2399 per set fully assembled with all the best components. ($1200 per cylinder head) The heads are available without spring kits for $2,150 ($1,075 per head) for customers looking to move over their existing spring kits.

For a limited time, we will be giving an additional $200 off all PRC cathedral aftermarket casting cylinder heads!

We have PRC 215,227, & 237 heads in stock and priced at $200 off! Please feel free to give us a call if you have any questions.

PRICES HAVE BEEN UPDATED ONLINE SO YOU CAN ORDER AT WWW.TEXAS-SPEED.COM OR CALL US AT 806.866.0734

flatchat

Cathedral Heads:

We are currently expanding our cathedral cylinder head lineup to include off-set rocker, big runner cylinder heads. While we currently offer and stock the PRC 215, 227, & 237cc cylinder heads, we will also be adding several off-set rocker 245 & 255+cc runner configurations very soon! The rocker arms will be offset to remove the pushrod restriction of the conventional location

Hmmmm another brand of cylinder head has a offset rocker setup....PI
Must work for people to copy?

1CAMWNDR

iTrader: (21)

Agreed.

Jason 98 TA

iTrader: (4)

You guys do realize this isn't reinventing the wheel here?!!? We are using a productions L92 rocker to help improve a restriction in a cylinder head. This is exactly the kind of stuff people have been doing for years in other race type applications.

Most aftermarket heads have a different valve angle from stock. Did everyone copy that idea just because people do that in other applications? Big blocks have been doing this for years... everyone must have copied that!



That's just flat ridiculous that someone would come in and make a statement like that.

If life does work that way I call dibs on relocated LS3 ports with different valve angles! Nobody can build that anymore without being a copy cat!

We were also the first company to use the 2.04" intake valve in production. I guess that makes everyone who runs 2.04" valves copy cats as well....

TXZ28LS1

iTrader: (5)

Jason, have you guys tested your PRC 215 head against the TFS 215 head by any chance?

Jason 98 TA

iTrader: (4)

Both are absolutely great heads. Here's what makes the PRC heads better IMHO.

1. Better spring kit standard (with TFS your getting a .600" spring kit that wont handle most LS camshafts

2. PRC heads built for stock rockers (with TFS your recommended to buy $500 rockers)

3. Smaller chamber options (with PRC you can have stock p/v & 59cc chambers TFS start out much larger so you have no hope of getting a compression bump with larger camshafts)

4. Price PRC heads are several hundred dollars less even though they already have all these upgrade features.

5. 6 bolt option is standard & free on PRC heads. Even if you dont have a 6 bolt block right now you will always have room to grow with the PRC heads

Don't rule out the 227 head either though TXZ. They work really well on the larger camshaft LS 346 applications. Our TSP camaro went 9.66 the second trip out to LSx thanks to the upgrade from 215 PRC heads to 227s. The two heads do very well & have chamber configurations options that will allow you to run larger camshafts & keep good p/v.

1CAMWNDR

iTrader: (21)

Fair enough. How are you guys at PRC making the idea better other than price?

flatchat

maybe copy was the wrong word........follow suit . Not knocking at all as i think you guys make good poducts.

LilJayV10

iTrader: (39)

Back pedal, back pedal

flatchat

No back pedal just re wording. some people set the foundations and others wait to build on it........

At least this time these heads are half decent and not chinese crap.

I will stick to my PI/MAST heads though as it takes more then just a push rod movment to make a great head.

Jon@Texas-Speed

iTrader: (18)

I suggest if you are going to post in our threads you need to get your information straight. There has NEVER been a single Chinese part in any PRC product ever produced. Everything that goes into these heads including castings is 100% made in the U.S.A. Maybe you are confusing PRC with another, cheaper, brand head but that is 100% false.

Whether you re-word or not. You are still wrong. Like Jason stated, people have been moving valves in aftermarket castings for years! You would have to look back many, many years to figure out who the first one to actually do it was. It's not something that just popped up. It's obvious if you are going to build larger volume ports you have to move things around. The results are off-set rockers!

Honestly, no one here is going to tell you don't run PI/MAST heads. We have obviously done business with both companies. You come across as if someone hurt your feelings or something. If you want to run their heads, go for it. I'm sure you will be happy with them. However, if you are going to post in this thread, keep in constructive with FACTUAL information or don't post at all.

flatchat

I never said PRC products were chinese??????????

No no feelings hurt maybe trying to have a chat about a product on a forum is hard......did not mean to come across that way.

Yes i know valves have been moved and so have many other things on heads over the years....im just stating PI were the first with cath heads for the LS heads and it must work ok???