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T O P I C R E V I E W
4-door Chevelle
Posted - 11/26/2015 : 08:07:16 These are original Summit cast iron heads that were rebuilt in 2010 by a machine shop with all new everything and I have all the receipts including flow numbers. Specs are standard 2.02/1.60 valves 200cc intake and 72cc combustion chamber. With these springs and work done they are good to about .520 lift. There was port work done, guide plates, 7/16 screw in studs, 3-angle valve job, resurface heads, valve seals, shimmed to correct installed heights.