Jason 98 TA

iTrader: (4)

Guys we're proud to announce after months of development & testing that the all new PRC LS7 cnc cylinder head is complete! The PRC LS7 cylinder head was built for big cube ls engines wanting the maximum possible cylinder head flow for the dollar! With 390+cfm air flow capability this all new cylinder head is set to be the leading head choice for these new big cube LSx & LS7 based engines.

Extensive valve testing has resulted in an all new hollow stem valve option to help keep both price & valve weight down! No longer will it take $3000 to build a LS7 based cylinder head for your big cube project!

Current price on the base PRC LS-7 Cylinder Head is $1699.99 with standard stainless REV valves & stock LS1 springs. Upgrade to the all new PRC hollow stem valves & PRC double spring kit & the complete cylinder head kit is only $2199.99!

Here's the options available with these cylinder heads:

Stainless Valves / Titanium Valves / Hollow Stem Valves
Standard Spring / 928 Comp Springs / PRC Dual Spring Kit

Here's Flow data for you guys!
LS7 Int LS7 Ex PRC LS7 Int PRC LS7 Ex
cfm cfm cfm cfm
.200 161 114 168 119
.300 227 171 244 179
.400 291 193 304 207
.500 330 203 345 219
.600 351 209 375 229
.700 359 390

Check out additional pics & info @ http://texas-speed.com/shop/item.asp...d=823&catid=40

TurboLark

iTrader: (3)

Is there an intake made that will allow the head to flow that?

njc.corp

thats the ****-

1bigcam

iTrader: (9)

will it work on a 416

Hennytime

iTrader: (33)

will these ever be offered with 6 bolts per cylinder so we can use them with lsx block?

venom ws7

iTrader: (13)

WOW Thats great price for those heads.
Awesome work Jason and Everyone at TSP and PRC.

1999vetteroo

iTrader: (15)

Jason,
You guys will guys will be hearing from me soon! Great job.....

Titus

WizeAss

iTrader: (5)

not really....the only advantage is you can run the LS7 manifold.

71CamaroLS1

Would these be considered too big for a mid-level 427 build?

Any dyno results yet?

What's the chamber volume?

Can you use stock LS7 valves with these?

TIA ...

texada

iTrader: (3)

I know what heads I'll be using if I build a 454ci LSX. Thanks TSP

Bo White

iTrader: (59)

Theres no way you coulda told Grumpy Jenkins 30 years ago we could do this on a "small block" production casting

Beaflag VonRathburg

iTrader: (176)

Wow, that is amazing! How much do the different valve options weigh?

HotWhipT/A

iTrader: (31)

Would these work really good on a 402 from you guys?

Jason 98 TA

iTrader: (4)

Thanks for all the support guys! I'll get more info for you all very shortly! This cylinder head really needs to be on a 4.100" bore. I'll have dyno results on a LS7 C6 very soon

Jason 98 TA

iTrader: (4)

You can run ls7 valves

Weight & dyno results coming very soon

jermzz

iTrader: (18)

Looks like they flow a little better then the etps for half the price.

Hennytime

iTrader: (33)

but will they have 6 bolts? thats my big thing

52172

iTrader: (2)

what castings are these stock ls7 or l92 I would imagine l92 so you should not call them ls7 heads. How can you use stock ls1 springs with the huge valves that must be a misprint? You would get valve float at 3000 rpms. Thanks!

52172

iTrader: (2)

these must be l92 heads so they have factory 15 deg valve angles right? Ls7 is misleading.

cncbird

iTrader: (3)

wepb site says " all new LS7 castings" -- not L92 based