Lingenfelter CNC Ported LS3 L92 Cylinder Heads - Pair
Part Number: L92CNC-PAIR
Free Shipping: W/$250.00+ Order
Shipping Weight: 50.00 pounds
Lingenfelter offers a CNC ported version of the L92/LS3 aluminum cylinder head used on 2008 production 6.2L based Chevrolet Corvettes and various 2007-2008 L92 L76 6.2L and 6.0L based GM trucks.
The cylinder head ports and chambers are carefully redesigned to produce the best flow characteristics that will provide improved horsepower & torque. Lingenfelter L92/LS3 cylinder heads are precision CNC machined on our in house 5 axis CNC machine to insure that tight tolerances are maintained. The Lingenfelter CNC porting procedure is a computer controlled machining operation that duplicates details from a finished Lingenfelter hand ported cylinder head. Hand porting is a very labor intensive and time-consuming procedure that takes years to perfect.
By CNC porting the cylinder heads the high cost of hand porting is reduced, plus the CNC porting is more consistent and will produce better results. Each CNC ported cylinder head will have the same port and chamber configuration as the original master used to develop the CNC program. Following porting each head receives: Precision 3 angle valve job to maximize flow & provide extended life, CC checking chamber size for correct compression, surfacing to insure deck flatness, deburring, pressure testing, professional assembly, setting spring height & checking all tolerances, and serial number.
Intake runner volume - LPE CNC: 275cc - Stock GM: 261cc
Exhaust runner volume - LPE CNC: 93cc - Stock GM: 89cc
Base price package includes porting your supplied cylinder heads
Stock 2.165 intake valves
Stock 1.59 exhaust valves
Stock retainers, locks, and valve seals
Prices include checking your valve guides for proper size, if your heads require guide replacement the cost is $9.50 per guide.
Minimum of 4 bore size recommended flow numbers are measured on 4.125 bore
LPE CNC L92 LS3 Flow Specs
Intake valve lift / Exhaust valve lift
.200 - 158 cfm / .200 - 116 cfm
.300 - 230 cfm / .300 - 161 cfm
.400 - 282 cfm / .400 - 201 cfm
.450 - 302 cfm / .450 - 213 cfm
.500 - 322 cfm / .500 - 220 cfm
.550 - 340 cfm / .550 - 226 cfm
.600 - 350 cfm / .600 - 231 cfm
.650 - 358 cfm / .650 - 234 cfm
.700 - 344 cfm / .700 - 237 cfm
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