285cc PRC LS7 CNC Ported 415+cfm Cylinder Heads Now Available
#1
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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.
![](http://www.texas-speed.com/data/images/285in.jpg)
![](http://www.texas-speed.com/data/images/285ex.jpg)
![](http://www.precisionracecomponents.com/data/images/285chamber.jpg)
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
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.
![](http://www.texas-speed.com/data/images/285in.jpg)
![](http://www.texas-speed.com/data/images/285ex.jpg)
![](http://www.precisionracecomponents.com/data/images/285chamber.jpg)
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
__________________
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
#7
LS1Tech Premium Sponsor
iTrader: (5)
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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.
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COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
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#9
LS1Tech Premium Sponsor
iTrader: (5)
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Nice chatting with you. I'll be giving you a shout as soon as I have some firm info for you!
__________________
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
![](https://ls1tech.com/forums/signaturepics/sigpic110569_2.gif)
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
#12
FormerVendor
iTrader: (18)
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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!![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
Jon
Check out our site. At the bottom you can price the heads with different casting, spring, and valve options!
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
Jon
#18
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#20
Banned
iTrader: (2)
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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.
.
Last edited by LS6427; 01-16-2010 at 12:10 PM.