Jason 98 TA

iTrader: (4)

We're pleased to announce the PRC casting is just about complete & here's a teaser pic of the all new 237cc casting cnc ported & ready for install on a customers 408 iron block!

The 237cc port is a supersized version of the 215cc cylinder head that recently claimed the quickest heads cam record!! The 237cc port is designed for customers with 4"+ bore applications looking for a max effort cathedral port cylinder head!

The 237cc cylinder head ships with the following:

• 2.100" Stainless Intake Valves
• 1.600" Stainless Exhaust Valves
• PRC Double Spring Kit (.650" Lift)
• 68cc CNC Machined Chambers
• Provisions for Stock Rocker Arms or Aftermarket Rockers
• Increased valve cover clearance for aftermarket rocker systems
• Thick Deck for better sealing in power adder applications
• 6 bolt option standard for LSx blocks!
• .700" Valve Spring Upgrade Available!!

Flow Data:

Lift Intake Exhaust
.100" 66 cfm 57 cfm
.200" 147 cfm 117 cfm
.300" 225 cfm 170 cfm
.400" 284 cfm 206 cfm
.500" 325 cfm 227 cfm
.600" 334 cfm 235 cfm
.650" 339 cfm 241 cfm

More info available at:
http://www.texas-speed.com/shop/item...d=992&catid=20

Preordering for 215, 227 & 237cc versions available with estimated ship time of mid Jan.

njc.corp

Looks good-will their be any valve upgrades that u might offer?

-ZW-

They look awesome Jason. I know this was a long process for you guys and alot of thought and hard work has gone into this or any PRC product for that matter. There are alot of mediocre heads in the LSX industry. This looks like a GREAT product as usual from PRC!!

Zach

Jason 98 TA

iTrader: (4)

Thanks for the messages guys! We will have different valve options available, hollow stem / titanium, etc....

WKMCD

iTrader: (2)

Hey Jason, what's the deck thickness on these. Just curious.

Kevin

Jason 98 TA

iTrader: (4)

Mr. WKMCD they're right at .700" if memory serves me correctly.

WKMCD

iTrader: (2)

Nice.

venom ws7

iTrader: (13)

Very very nice like always great work TSP and PRC I cant wait for some dyno numbers.

1997bird

iTrader: (2)

Are your heads designed to use a stock LS1/2/6 shaft mount system (I have bolth T&D Machine & Jesel)?

Riverracer

I'm a SBC guy and am not familiar with the Cathedral Port head, what are the Pros and Cons of them vs a traditional oval or rectangular/style port head like the LS7 head?

raymond mckinney

iTrader: (4)

Just a question but I think i've seen ported Ls6 heads flow better than this, am i wrong?

TVWilkes

Not and be realistic.

raymond mckinney

iTrader: (4)

I am being realistic.

1997bird

iTrader: (2)

While I'm noy going to say that it can't be done on a 243 casting, you will be needing one of the best head porters in the nation to get there.
Compare these heads to the TFS 235cc heads on a 4.030" bore fixture (the exhaust #'s are not compareable as the TFS heads are with a 1 7/8" pipe vs no pipe for TSP)

Ryne @ CMS

iTrader: (10)

seems like a solid cylinder head....... what is the price point?

The Dragon

iTrader: (6)

SOMbitch

iTrader: (8)

You sound so sure in post 13 so post up a link and share with us. We are all on the edge of our seats......

manueltarin

iTrader: (6)

Those are nice.

firefighting1101

iTrader: (48)

The SAM ls6 cylinder heads flow over 400 cfm if my memory doesnt fail me, but those are a school project and get tons of attention. a lot more than and typical cnc head

BigRich954RR

iTrader: (1)

How's every thing going with this head are they shipping yet?

How are they vs the 6bolt trickflow 235 heads?

Is there any way to get the warhawk bolt pattern on this?

Is there any room for hand porting?