Many hours of R&D have gone into the development of this powerful LS3 CNC program. With stout flow numbers and an efficient port shape, the LME CNC ported LS3 offering is truly bolt on performance.

## By specifying your cam lift LME will assemble your cylinder heads with the proper spring installed height. This will result in optimal spring pressures and coil bind distance for maximum performance. Please include rocker ratio to ensure accuracy. (example: .650" lift with 1.8 ratio intake and exhaust)

*All Cylinder Heads Are Priced As ASSEMBLED Pairs

**CORE CHARGE WILL BE REFUNDED WHEN USEABLE CORES ARE RETURNED BY CUSTOMER

FLOW NUMBERS WITH 4.125" BORE @ 28" WATER
LIFT	.100"	.200"	.300"	.400"	.500"	.600"	.700"	VALVE SIZE
INTAKE	89	155	222	284	328	354	365	2.165"
EXHAUST	70	127	174	212	244	265	274	1.600"

*Flowed with radius inlet intake/no pipe exhaust

Intake Volume (cc)	281	Rocker Config.	GM LS3
Exhaust Volume (cc)	98	Intake Port Config.	GM LS3
Chamber Volume (cc)	70 cc	Head Bolts/ Cyl.	4
Valve Guide Material	Factory Steel	Valve Angle (degrees)	15° In. 15° Ex.

LME Standard Head Porting Process

Clean carbon from intake exhaust and chambers (used cores)
Through inspection
Debur sharp edges
Valve guide clearance measured and adjusted for application
CNC ported intake exhaust and chambers
Competition valve job
Valve job hand blended into ports

Combustion chambers measured and adjusted for application
Meticulous final cleaning of cylinder head and components
Intake valves back cut with optimal angle for application
Heads assembled and spring pressure set up for specific cam lifts/application

Parts: Reuse GM Intake valves, REV Stainless Severe Duty Exhaust Valves, LME .660" Lift Spring Kit w/ Titanium Retainers.

LS3, LSA, and LS9 HEAD PORTING SERVICE

LS3, LSA, and LS9 HEAD PORTING SERVICE