For all those who have picked up the Ecotec Engine Handbook, does it have actual specs in it for the CNC ported and polished head GM has been offering? Please let me know. Thanks.


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INTAKE EXHAUST


valve head diameter 1.385" 1.185"
valve stem diameter 0.215" 0.215"
erffective valve area (sq. in.) 1.470 1.067
leakage (cfm) 0.00 0.00
valve seat angle (degrees) 45.0 45.0
valve spring installed height 1.350" 1.350"
valve spring seat pressure (lbs.) 105 105
spring pressure@.407 lift (lbs) 320 320
port volume (cc) 181.0 78.0
average flow (cfm) 187.29 169.52
maximum flow 268.50 208.30




I hope that helps




I ain't callin u a gold digga,but you ain't messin wit a broke cracka