yes 69CC and these heads are over $3300/pr from LPE!!!
Intake runner volume - LPE CNC: 275cc - Stock GM: 261cc
Exhaust runner volume - LPE CNC: 93cc - Stock GM: 89cc
Chamber Volume: 69 cc's
9.1:1 compression on a stock LS9 or LSA
10.7:1 on a stock LS3
9.55:1 on LPE low compression 427 short block
9.7:1 on LPE low compression 417 short block
- includes NEW GM LSA cylinder heads
- 2.165 Light-weight hollow stem intake valves
- 1.59 High performance Inconel exhaust valves
- Lingenfelter dual valve spring kit L230075897
- Lingenfelter titanium retainers, 7 degree bead lock valve locks , premium valve seals, valve spring seat cups
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