Lingenfelter CNC Ported LS3 Cylinder Head 11.0 Compression

Lingenfelter in house CNC ported GM LS3 aluminum cylinder heads can be used on 2008-2012 production 6.2L based Chevrolet Corvettes and various 2007-2012 L92 L76 6.2L and 6.0L based GM trucks.

Lingenfelter CNC Ported LS3 Cylinder Head 11.0 Compression Complete
New complete cylinder head assemblies - SOLD EACH, NO Core required

Dyno Charts for these Heads:
http://www.lingenfelter.com/images/Largeview/LPECNCL92intake.pdf
http://www.lingenfelter.com/images/Largeview/LPECNCL92exhaust.pdf

Lingenfelter LS3 CNC ported complete cylinder heads are sold with light-weight hollow stem intake valves and heavy duty inconel exhaust valves that designed to be durable even under extreme high temperature conditions seen with supercharged or turbocharged applications.

LS3 cylinder heads are precision CNC machined on our in house 5 axis CNC machine to ensure 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. The port and chambers are carefully designed to provide the best combination of high flow capabilities across the entire valve lift range. The Lingenfelter quality control procedures include sectioning sample cylinder heads to confirm minimum wall thicknesses.

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

- includes NEW GM LS3 cylinder heads
- 2.165 Light-weight hollow stem intake valves
- 1.59 High performance inconel exhaust valves
- Competition Cams 26918-16 valve springs
- Competition Cams Titanium retainers, 10 degree valve locks & valve seals

Minimum of 4.00 bore size recommended with this cylinder head.

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

Watch Lingenfelter's 5 axis Boston CNC in action click on the link below. Lingenfelter CNC Machine Video Page

Intake valve lift (inches)	.200	.300	.400	.450	.500	.550	.600	.650	.700
stock intake	156	226	276	294	310	324	332	332	308
LPE CNC intake 4.065" bore*	156	228	280	300	320	336	346	352	340
LPE CNC intake 4.125" bore*	158	230	282	302	322	340	350	358	344

Flow differences are purely from the flow fixture bore size difference. The same CNC program and the same head cylinder was tested on both bore sizes.