Jason 98 TA

iTrader: (4)

We recently finished up the final version of the all new PRC CNC Ported 285cc LS7 cylinder head! The head is available in stock LS7 castings or in the Performance Induction 6 bolt LS7 head! Look for dyno data next week when we install a set on a 454 LS7 resleeved engine.

NEW GM LS7 Cores or Performance Inductions 6 Bolt Heads!
Based off PRC's CNC Ported LS7 Heads
2.250"/1.610" Valves
PRC Double Spring Kit Complete With PRC Double
Springs, Titanium Retainers, Seats, & Seals
Completely Assembled & Setup To Your Specs!!
Available With Stainless, Hollow Stems, or titanium valves!
Extensive CNC & dyno testing has resulted in one of the most affordable & powerful LS7 based cylinder heads available! Flowing up to 70cfm more than the stock GM LS7 head, the all new PRC cylinder head offers both unmatched power & airflow.

The PRC LS7 cylinder head is available with standard stainless valves, Hollow Stem Stainless, or titanium valves.











Flow Data: @ 4.125" Bore Plate Superflow 600



PRC 285cc
LS7 Intake PRC LS7 Exhaust
.200 169 119
.300 248 179
.400 311 211
.500 353 224
.600 386 235
.650 393 241
.700 407 246
.750 415 251

BgBoost1

iTrader: (2)

WOW....Good Numbers!!!!!

UGotBeaT

geez 2.250 valve thats pretty big..!

Cesar

venom ws7

iTrader: (13)

Again GREAT Work TSP I can't wait to see some results of those bad boy..

What's the price Jason for the good customers??

obZidian

iTrader: (2)

damn! Not bad really when considering its for a small block! The ls stuff is starting to show it can hang with some of the major players.

airforcemanss

iTrader: (23)

so when do you expect to post a graph of the 454? what cam are you guys using? i hope its the ls7r or one similar. . btw, why a ls7 sleeved 454?

Sales2@Texas-speed

iTrader: (5)

Not sure what camshaft Jason is planning to throw in there, but I can tell you he was wanting to go larger cubes without the extra weight of the LSx block and without the cost of the aftermarket block.

Gordon0652

iTrader: (4)

Awesome Work!! Extra CFM would work awesome on my 440.
Just spoke with you Matt hopefully we can work something out.

Sales2@Texas-speed

iTrader: (5)

Nice chatting with you. I'll be giving you a shout as soon as I have some firm info for you!

LS6427

iTrader: (2)

Any more room for more exhaust side flow?

What are those suckers gonna cost fully CNC'ed, fully assembled?


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venom ws7

iTrader: (13)

Your car will gain sick power and TQ with PRC LS7 over those LS1 Heads

Jon@Texas-Speed

iTrader: (18)

http://www.texas-speed.com/shop/item...=1087&catid=40

Check out our site. At the bottom you can price the heads with different casting, spring, and valve options!

Jon

LS6427

iTrader: (2)

lol....I know that, I was just curious if that was the max flow for the exhaust sides.

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LS6427

iTrader: (2)

How thick is the deck, I couldn't find that info anywhere.


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dmracing

iTrader: (78)

Do you think that with these heads and 440 cubes you could make 750ish hp on pump gas?

LS6427

iTrader: (2)

Its all about the intakes at those power levels, its not just the heads. 350 cfm heads can make 750 fwhp...if you have the right intake.

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Gordon0652

iTrader: (4)

I believe on the stock casting its around 3/8".

Gordon0652

iTrader: (4)

Ohhh yes they can!

What he said ^

dmracing

iTrader: (78)

What intake would you use? Fuel injection and carbed?

LS6427

iTrader: (2)

That becomes more of a question of CASH.

In my opinion, there is nothing that can beat an ITB (Individual Throttle Body) intake. There's several brands. They crush sheet metal intakes in flow. But ITB intakes range from $3,000 to $12,000.

For a budget of some sort, a ported LS7 or ported Fast 102mm is probably the best bet. But neither of these intakes can even begin to feed the heads we have available today for our LSx engines anywhere near their max potential. A 400cfm head is a friggin BEAST. So the intakes will remain the weak link for a very long time with LSx engines.

Couple examples of ITB intakes:

$3,600
http://www.extrudabody.biz/servlet/t...evy-LS7/Detail

$10,000+
attached photo below..........Kinsler. First one is for an LS1 and the other two are for the LS7.

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