[Z06] 390CFM PRC LS7 CNC Ported Heads Now Available!
10-05-2007, 06:29 PM
#1
Premium Supporting Vendor
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390CFM PRC LS7 CNC Ported Heads Now Available!
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
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
10-05-2007, 08:29 PM
#3
Drifting
I think stock heads flow 330 cfm intake. I had mine ported by Charlie at RPM Motorsports, and they flow 382 cfm. 
I am curious to see what the cfm is on the exhaust ports.
I am curious to see what the cfm is on the exhaust ports.
10-08-2007, 08:19 AM
#5
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10-09-2007, 08:07 AM
#9
Burning Brakes
This setup looks sweet.
Jason,
What mod's would you recommend before opting for these heads?
I'd be interested to see a Stock dyno graph and one with the new heads in the same thread. I realize that if your going with ported heads that the car would most likely have additional mod's, but could you humor us anyway...?
One last question, any low rpm driveability issues with this setup?
Jason,
What mod's would you recommend before opting for these heads?
I'd be interested to see a Stock dyno graph and one with the new heads in the same thread. I realize that if your going with ported heads that the car would most likely have additional mod's, but could you humor us anyway...?
One last question, any low rpm driveability issues with this setup?
10-09-2007, 07:25 PM
#11
Premium Supporting Vendor
Thread Starter
Guys I'm currently looking for a cam'd ls7 car in the area to test the exchange dyno results! I'll let you know when I find a Z to test with!
10-10-2007, 05:14 AM
#12
Burning Brakes
10-23-2007, 10:20 PM
#20
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Location: Scott, LA 337-354-9970
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Thanks for talking with me the other day. I will drive there as soon as I get the word