FS: PRC 227cc CNC Ported Heads: Refurbished
08-23-2016, 01:46 PM
#1
FS: PRC 227cc CNC Ported Heads: Refurbished
SOLD!
Hi Guys, I selling my PRC high compression heads to make way for my twin turbo project. Came off my 2007 LS2 coupe M6. Also will be selling the G6X3 cam and headers in the near future.
These heads have the tall cathedral intake ports. Look up the specs for these heads on the Texas Speed website.
Stock head gasket on a LS2 will yield 11:4.1 compression ratio. The angle of the valves are laid over to allow more PTV room, and flow rates on the ports are fantastic.
Real world performance: I have the G6x3 cam, Fast Intake 102, Headers, UDP, meth injection, and stock head gasket. Stock heads, the car was really fast in the lower and mid ranges. . . even with the big cam. When I changed over to the PRC heads, the car really woke up especially in the mid to upper rom ranges. I could really feel the extra power when downshifting from 6th gear to fourth to pass on the highway. Throws you in the back of the seat hard and performance is very snappy. For naturally aspirated cammed engines, these heads are beast. Tuned on a dyno, car put out 502rwhp thru a stock six speed and 459 ftlbs of torque. I bought the heads new and used them for about 15k. No track use and only 3 dyno pull sessions.
After I removed them from my car, I sent them to Texas Speed (the manufacturer) to have them completely redone with brand new intake and exhaust valves, (updated) valve springs (good for .660" lift), valve seals, valve job, cleaned, and checked for trueness and cracks. One of the heads still in the box.
I am selling them for 1400.00 free shipping UPS in continental USA.
They are also on Fleabay...ending Friday. Ask me any questions!
SPECS from Texas Speed Website:
227cc Fully CNC Ported Intake Runners
84cc Fully CNC Ported Exhaust Runners
Small Bore Chambers For Increased Horsepower & Torque+ SPECIFICALLY DESIGNED FOR 3.9"-4" BORE APPLICATIONS
TSP Spring Kit w/ PAC Valve Springs Rated To .660" Lift
62cc CNC Machined Chambers
2.065" Intake / 1.600" Stainless Valves
Factory Rocker Friendly!!*
The all new 227cc cylinder head is finally available for customers looking for the pinnacle of LS cathedral port performance. Now is your chance to own the same cylinder head that currently holds the fastest stock bottom end heads / cam record! The new 227cc port has been flow bench tested to flow over 320cfm & can support everything from smaller camshaft street engines all the way to all our race engines. This cylinder head is a combination of a max effort high flowing port combined with a smaller chamber designed for max power in stock cube applications.
This cylinder head was used on the Texas Speed 98 Camaro when it lowered the heads cam stock bottom end 1/4 mile record to 9.66!!
Flow Data:
4.00" Flow Plate - No Exhaust Pipe
LIFT INTAKE FLOW EXHAUST FLOW
.100" 68 CFM 56 CFM
.200" 145 CFM 115 CFM
.300" 214 CFM 167 CFM
.400" 261 CFM 202 CFM
.500" 300 CFM 219 CFM
.600" 322 CFM 238 CFM
.650" 330 CFM 236 CFM
Hi Guys, I selling my PRC high compression heads to make way for my twin turbo project. Came off my 2007 LS2 coupe M6. Also will be selling the G6X3 cam and headers in the near future.
These heads have the tall cathedral intake ports. Look up the specs for these heads on the Texas Speed website.
Stock head gasket on a LS2 will yield 11:4.1 compression ratio. The angle of the valves are laid over to allow more PTV room, and flow rates on the ports are fantastic.
Real world performance: I have the G6x3 cam, Fast Intake 102, Headers, UDP, meth injection, and stock head gasket. Stock heads, the car was really fast in the lower and mid ranges. . . even with the big cam. When I changed over to the PRC heads, the car really woke up especially in the mid to upper rom ranges. I could really feel the extra power when downshifting from 6th gear to fourth to pass on the highway. Throws you in the back of the seat hard and performance is very snappy. For naturally aspirated cammed engines, these heads are beast. Tuned on a dyno, car put out 502rwhp thru a stock six speed and 459 ftlbs of torque. I bought the heads new and used them for about 15k. No track use and only 3 dyno pull sessions.
After I removed them from my car, I sent them to Texas Speed (the manufacturer) to have them completely redone with brand new intake and exhaust valves, (updated) valve springs (good for .660" lift), valve seals, valve job, cleaned, and checked for trueness and cracks. One of the heads still in the box.
I am selling them for 1400.00 free shipping UPS in continental USA.
They are also on Fleabay...ending Friday. Ask me any questions!
SPECS from Texas Speed Website:
227cc Fully CNC Ported Intake Runners
84cc Fully CNC Ported Exhaust Runners
Small Bore Chambers For Increased Horsepower & Torque+ SPECIFICALLY DESIGNED FOR 3.9"-4" BORE APPLICATIONS
TSP Spring Kit w/ PAC Valve Springs Rated To .660" Lift
62cc CNC Machined Chambers
2.065" Intake / 1.600" Stainless Valves
Factory Rocker Friendly!!*
The all new 227cc cylinder head is finally available for customers looking for the pinnacle of LS cathedral port performance. Now is your chance to own the same cylinder head that currently holds the fastest stock bottom end heads / cam record! The new 227cc port has been flow bench tested to flow over 320cfm & can support everything from smaller camshaft street engines all the way to all our race engines. This cylinder head is a combination of a max effort high flowing port combined with a smaller chamber designed for max power in stock cube applications.
This cylinder head was used on the Texas Speed 98 Camaro when it lowered the heads cam stock bottom end 1/4 mile record to 9.66!!
Flow Data:
4.00" Flow Plate - No Exhaust Pipe
LIFT INTAKE FLOW EXHAUST FLOW
.100" 68 CFM 56 CFM
.200" 145 CFM 115 CFM
.300" 214 CFM 167 CFM
.400" 261 CFM 202 CFM
.500" 300 CFM 219 CFM
.600" 322 CFM 238 CFM
.650" 330 CFM 236 CFM
Last edited by JimiHendrix; 08-24-2016 at 11:46 PM. Reason: Added Specs for Heads
