PRC CNC Porting Service - Cathedral Port Heads (Customer Supplied Castings)

Name: PRC CNC Porting Service - Cathedral Port Heads (Customer Supplied Castings)
Brand: MailOrder Tuner
Price: 899.99 USD
Availability: InStock

$899.99

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The price listed is for you sending your cathedral port cylinder heads (4.8/5.3, LS1, LS6, LS2, LQ4/9) to us for porting. Our stage 1 porting service will include the re-use of the stock vales. Stage 2.5 will include aftermarket 2.02/1.57 stainless steel valves. We also offer valve spring upgrades.

PRC CNC Porting/Machining Service Includes:

Disassembly
Deep Cleaning
CNC Porting
CNC Valve Job
CNC Engraving of PRC Logos
CNC Milling to Your Specs
Reassembly
Pressure Testing

Click Here to SEE why we build better heads! All Precision Race Components (PRC) cylinder heads come fully CNC-ported and machined using state-of-the-art technology. With all PRC cylinder heads, quality and performance are our two highest priorities! In addition to this, you will not find a better performing cylinder head porting service at this price. Call one of our sales consultants today if you have any questions or if you would like to discuss your specific application.

Stage 2.5 5.3L Flow Chart
Lift	Intake Flow	Exhaust Flow
.200"	147 cfm	111 cfm
.300"	207 cfm	145 cfm
.400"	254 cfm	185 cfm
.500"	291 cfm	204 cfm
.600"	308 cfm	223 cfm

Stage 1.0 LS6 Flow Chart
Lift	Intake Flow	Exhaust Flow
.200"	147 cfm	114 cfm
.300"	207 cfm	148 cfm
.400"	255 cfm	187 cfm
.500"	292 cfm	202 cfm
.600"	313 cfm	220 cfm

Stage 2.5 LS6 Flow Chart
Lift	Intake Flow	Exhaust Flow
.200"	147 cfm	114 cfm
.300"	207 cfm	152 cfm
.400"	255 cfm	191 cfm
.500"	292 cfm	207 cfm
.600"	316 cfm	226 cfm

Stage 1.0 LQ9 Flow Chart
Lift	Intake Flow	Exhaust Flow
.200"	147 cfm	114 cfm
.300"	207 cfm	148 cfm
.400"	255 cfm	187 cfm
.500"	292 cfm	202 cfm
.600"	313 cfm	220 cfm

Stage 2.5 LQ9 Flow Chart
Lift	Intake Flow	Exhaust Flow
.200"	147 cfm	114 cfm
.300"	209 cfm	152 cfm
.400"	258 cfm	191 cfm
.500"	294 cfm	207 cfm
.600"	316 cfm	226 cfm

*Typically a 1-2 week turn around time once heads arrive at our facility.

*Stage 1 porting NOT available for 4.8L and 5.3L castings due to the factory 1.94" intake valve size. All 4.8L and 5.3L cylinder heads must select the stage 2.5 option that includes 2.02"/1.57" stainless steel valves!

Castings:

4.8/5.3 (706/862)
LS1 (241/853)
LQ4/LQ9 (317)
LS6/LS2 (243/799)