Does anyone have Dyno# with these heads. they are new and just came out.. they make them for a 3.900 bore and also 4.00 bore too.. They are suppose to be CNC ported and have a max flow of 315cfm I think it could be more correct me if I'm wrong. Anybody with some positive input would be nice.. More interested with an LS1/LS6 but any input would do..

 

are these GMPP heads?

 

The ones I seen in GMHTP were the West coast version CNC Ported .. But I'm sure GMHPP has some CNC too... if you guys miss it check out GMHTP this months..

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