PRC LS7x 265cc CNC Heads

Name: PRC LS7x 265cc CNC Heads
Brand: MailOrder Tuner
Price: 3935.99 USD
Availability: InStock

$3,935.99

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Precision Race Components LS7 CNC 265cc ported cylinder heads.

Click Here to SEE why we build better heads!

MADE IN THE USA!!

CAST IN THE USA!!

MACHINED IN THE USA!!

PRC 6-Bolt LS7 Cylinder Heads with Thicker Deck Surface
Will Work on Both Standard GM 4-Bolt & Aftermarket LSx / RHS 6-Bolt Style Engine Blocks
2.200"/1.610" Valves
TSP .660" Dual Spring Kit w/ PAC Springs, Retainers, Seats, & Seals
Springs, Titanium Retainers, Seats, & Seals
CHE Bronze Guides
Completely Assembled & Setup To Your Specs
Available With Stainless Steel, Hollow-Stem, or Titanium Intake Valves

Extensive CNC and dyno testing has resulted in one of the most affordable and powerful LS7-based cylinder heads available! Flowing up to 35 CFM more than the stock GM LS7 head, the all-new PRC cylinder heads offer both unmatched power and airflow!

The PRC LS7 cylinder heads is available with standard stainless valves, hollow-stem intake, and titanium intake valves. If you are going to run the stainless steel intake valves, we recommend limiting total valve lift to no more than .616" due to the weight of the intake valve. Upgrading to the hollow-stem intake valve will shed significant intake valve weight and allow for additional lift. The titanium intake valves will be the lightest choice of the three choices and offer the best lift possible!

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

**Valve spring lift ratings are based on using titanium intake valves.

PRC LS7x 265cc CNC Heads , BTR LS7 heads , LS7 Heads - Mail Order Tune

LS7 heads , PRC heads , Texas speed and Performance, Manley valve , CHE guides - Mail Order Tune

PRC 6-Bolt LS7 Cylinder Heads with Thicker Deck Surface
Will Work on Both Standard GM 4-Bolt & Aftermarket LSx / RHS 6-Bolt Style Engine Blocks
2.205"/1.59" Valves
TSP .660" Dual Spring Kit w/ PAC Springs, Retainers, Seats, & Seals
Springs, Titanium Retainers, Seats, & Seals
CHE Bronze Guides
Completely Assembled & Setup To Your Specs
Available With Stainless Steel, Hollow-Stem, or Titanium Intake Valves
68cc Chamber Size as Standard

The PRC Small Bore LS7 cylinder heads are designed for both stroker, and stock cube applications with a 4.060"-4.100" bore. For bores larger than 4.100" bore checkout the PRC LS7 265cc & 285cc cylinder heads!

The PRC LS7 cylinder heads are available with hollow-stem intake and titanium intake valves. We recommend no more than .625" total intake valve lift with the hollow-stem intake valves and no more than .670" total valve lift with the titanium intake valves.

Superflow 600

	PRC 265cc LS7 Intake	PRC LS7 Exhaust
.200	169	118
.300	246	176
.400	304	208
.500	348	221
.600	380	230
.650	383	235
.700	388	240

**Valve spring lift ratings are based on using titanium intake valves.

PRC LS7x 265cc CNC Small Bore Heads , TFS LS7 Heads , BTR - Mail Order Tune

PRC LS7x 265cc 7.0L CNC Head Porting

$959.99

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.

PRC LS7x 265cc 7.0L CNC Head Porting - MailOrder Tuner

TSP LS7 heads, trick flow LS7 heads, PRC LS7 , Manley valve , stainless valve , LS7 engine , GM 7.0 Heads - Mail Order Tune

PRC LS3, L92, & LSA CNC Cylinder Head Porting

$899.99

Tons of R&D on both the flow bench & engine dyno has created one of the leading LS3/ cylinder heads available!

The PRC LS3 cylinder heads porting for customers with existing LS-3 cylinder heads. Corvette & 2010 Camaro customers can now send in their heads to be ported!

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

Precision Race Components LS3/L92 CNC ported cylinder heads. Fully CNC ported LS3-based cylinder heads!

2.165"/1.59" Valves
PRC Double Spring Kit AVAILABLE
Completely Assembled & Setup To Your Specs!!

Service Includes:

Cylinder Head Cleaning
CNC Valve Job
CNC Porting
Milling to customers specs
Fully Assembled

Dyno Tested 25+HP Gains Over Stock 6.2L Cylinder Heads!

	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

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

PRC LS3, L92, & LSA CNC Cylinder Head Porting , TSP head porting - Mail Order Tune

PRC LS3, L92, & LSA , stainless valves , CNC porting , LS3 heads , L99 heads , PAC springs - Mail Order Tune

PRC LS3 Aftermarket 6-Bolt 260cc CNC Cylinder Heads

$2,937.59

All Precision Race Components (PRC) cylinder heads come fully CNC-ported and machined using state-of-the-art technology!

Click Here to SEE why we build better heads!

MADE IN THE USA!!

CAST IN THE USA!!

MACHINED IN THE USA!!

PRC's aftermarket casting LS3/L92/L99 cylinder heads come standard with the following options:

NEW PRC 13-Degree Valve Angle LS3 Castings
Improved Piston-to-Valve Clearance For Extra Compression & Larger Camshafts
Smaller Than Stock Intake Port Volume For Improved Port Velocity
Manley Stainless 2.185" Intake, 1.60" Exhaust Valves
Billet Rocker Pedestals
TSP .660" Dual Spring Kit w/ PAC Valve Springs, Titanium Retainers, Seats, & Seals
CHE Bronze Guides
Completely Assembled and Milled to Your Specifications
60-68cc Chambers

All PRC cylinder heads are extensively researched and tested. The all-new PRC aftermarket casting LS3 cylinder heads are designed to flow considerably more than a gm ported casting while keeping the port sizes smaller for improved port velocity. The result is a cylinder head that is smaller than a stock GM LS3 port and moves more air than any other ls3 cylinder heads!

The all new PRC aftermarket casting LS3 heads are the perfect option for customers looking for the ultimate in LS3/L99/L92 cylinder head technology

The PRC aftermarket casting LS3 cylinder heads are available in 2 different configurations:

255cc Runners for max effort stock cube LS2/LS3/L99/L92 engines looking for a 370cfm cylinder head that can be aggressively milled & still keep better than stock p/v
260cc Runners For LS3/L99/L92 stroker engines needing a 380cfm+ cylinder head!

The 13-degree valve angle will allow for the ability to run more compression and larger camshafts thanks to additional piston-to-valve clearance!!

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

With all PRC cylinder heads, quality and performance are our two highest priorities! In addition to performance, you will not find a better performing set of cylinder heads at this price (cost is for the pair!). Call one of our sales consultants today if you have any questions or if you would like to discuss your specific application.

PRC LS3 Heads . PRC 260cc , CNC heads , LS3 260cc Cylinder heads - Mail Order Tuner

PRC LS3 heads , Stainless valves , PAC springs , LS3 260cc heads , Best LS3 heads, BTR , PCM of NC , Summit racing LS3 heads - Mail Order Tune

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