Whats This Sound!? (First Starts After Heads/Cam Install - Page 7 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

christianchevell · 05-18-2016, 07:15 AM

Having milled the heads you know the distance / geometry has slightly changed and if you have a aggressive cam you could go PTV interference requiring fly cutting, but most likely not with just a little longer pushrod, and a mild clean up clean the deck.... if your not a real aggressive cam, keeping safe PTV is crucial and a good reason to ditch springs every 25k to keep the springs with good strength. If your just gaining part of a point of compression your tune should be good, only adjusting the knock retard slightly is what would IMO be done. Good Luck.

05-18-2016, 07:15 AM	#85
christianchevell old school chevy rodder Drives: 2021 zl1 a-10 WildCherry Join Date: Jul 2012 Location: Oregon Posts: 5,622 View My Garage	Having milled the heads you know the distance / geometry has slightly changed and if you have a aggressive cam you could go PTV interference requiring fly cutting, but most likely not with just a little longer pushrod, and a mild clean up clean the deck.... if your not a real aggressive cam, keeping safe PTV is crucial and a good reason to ditch springs every 25k to keep the springs with good strength. If your just gaining part of a point of compression your tune should be good, only adjusting the knock retard slightly is what would IMO be done. Good Luck. __________________ 2021 Wild Cherry ZL1 A10, Sunroof, Data,Red Carbon Interior, Nav, RotoFab Big Gulp , Elite x2ultra, Borla ATAK, Driveshaft shop, BMR susp, Speed covers, intercoolers, ATI , 2650 MAG, DSX lid, 103 NW, TSP Longtubes & cats, LPE, 1le mods, ,LME cover, Katech pump and chain, Trunnions, BTR stage 2, LPE boostapump, Gforce, Speed eng , Granetteli, etc etc