1 1 VALVE TRAIN G The small V 8 engines use push rods having hardened steel inserted tips on one end and should be installed with t W end up M 4 push rods are hardened at both ends l New rocker arms and balls will burn sooner than run S11 pa s i If no used ones are available move an intake ro nd ll 1 over to the burned exhaust position and install on an intake position which runs cooler I 1 1 The small block V B cast aluminum rocker covers have g drippers to improve rocker arm ball lubrication I New valve train parts experience considerable valve e 1 change during run in and lash should be E f yl until stabilized 9 S 1 j 1 4 High lift camshafts make i ch c Q 1 to rocker arm stud clearanc 1 s q i c d at maximuun lift Many ident Eli e M tl cate 1 the latest changes incorpora J9 v Q Dealers have no means for selection b J E i Therefore it ay 1 be necessary to grind some addit o al clearance i 1 arm slot to avoid interference with thejtgszi er t attempt to locate newer rock ar 0 Q gr 1 Two mechanical valve lifters 1 5232695 over head oil metering g s i by an internal 1 inertia flapper valve This is p tion in most mechanical lifter engines 5231585 meters over head oil on the basis of lifter to bore 5 clearance orificing and has several desirable features not available with the piddle valve lifter Lifter 5231585 1 effects a l0 20 reduction in total oil circulation rate due to its design This can be a considerable benefit in dry sump and restricted oil pan capacity installations If conventional rocker arms are used it is necessary to grind a 003 005 flat on one side of each lifter between the oil feed hole and the existing annular groove around the lifter body This increases over head oil to adequately lubricate the production valve train 1 It is recomended Molykote or other molydisulfide based EP lubricant be used on lifters for proper break in Also valve 1 lifters will be more compatible with the camshaft should the tappet contact surface be polished with 600 grit paper Good 1 used tappets are more desirable 1 1 1 20 ll 16 70 1 l a l 1