PRC LS7x 265cc 7.0L CNC Head Porting

Name: PRC LS7x 265cc 7.0L CNC Head Porting
Brand: MailOrder Tuner
Price: 959.99 USD
Availability: InStock

$959.99

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These are for customer supplied cylinder heads. We are not supplying castings! This is porting, valve job, and milling only!

Precision Race Components LS7 CNC 265cc ported cylinder heads. Fully CNC ported LS7-based cylinder heads! (All New GM LS7 Cylinder Head Castings)

Based off PRC's CNC Ported LS7 Heads
2.200"/1.610" Valves (base price for exchange includes new stainless exhaust valves)
Available with 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 35cfm 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 exhaust valves and titanium intake valves.

Flow Data: @ 4.125" Bore Plate Superflow 600

	LS7 Intake	LS7 Exhaust	PRC 265cc LS7 Intake	PRC LS7 Exhaust
.200	161	114	169	119
.300	227	171	248	179
.400	291	193	308	211
.500	330	203	351	224
.600	351	209	383	235
.650	353	204	388	241
.700	353	209	393	246

**If stock valve guides are damaged or badly worn, there is an additional $150 fee to replace them.
**If stock guides are replaced, stock springs can not be used due to the larger O.D. of the aftermarket guide. Spring kit must be replaced with aftermarket as well.

Stock Valve Weight	Stainless Valve Weight	Hollow Stem Valve Weight
106	122	91
Grams	Grams	Grams

Lift	Intake Flow	Exhaust Flow
.200"	157 cfm	117 cfm
.300"	224 cfm	170 cfm
.400"	279 cfm	205 cfm
.500"	329 cfm	225 cfm
.600"	360 cfm	235 cfm
.650"	372 cfm	240 cfm
.700"	380 cfm	243 cfm

	PRC LS3 Intake	PRC LS3 Exhaust
	cfm	cfm
.200	154	115
.300	223	170
.400	282	198
.500	324	211
.600	351	228
.650	358	232