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JL8Jeff · 12-09-2008, 06:43 PM

If GM was phasing in a new head casting then there's no reason for them not to use it at the end of the model year run. Something like the LS6 intake with no EGR they would not be able to do without proper EPA certification.

12-09-2008, 06:43 PM	#8
JL8Jeff Hippy Mod, Bergermeister Meisterberger, Moderator Join Date: Aug 2004 Location: Ewing Posts: 6,216 iTrader: (3)	If GM was phasing in a new head casting then there's no reason for them not to use it at the end of the model year run. Something like the LS6 intake with no EGR they would not be able to do without proper EPA certification. __________________ 69 Z28 JL8 4 wheel disc brakes - being restored 09 Silverado Z71