bad cam
#1
Junior Member
JOURNEYMAN
Thread Starter
Join Date: Feb 2008
Posts: 28
bad cam
i have a 454 and all my lifters stuck,so i put new ones in and ran one race and there already weak.when you ajust them the motor bogs down before the rockers stop rattling but.any ideas?thanks
#2
Junior Member
APPRENTICE
Join Date: Sep 2007
Posts: 24
Stuck?? what do you mean by stuck? :shock: siezed up ?? the engine should bog down a little when you adjust your hydrolic cam and its a little to far out of adjustment .. I assume hydrolic since you stated till the rockers stop rattling... any more info ?? solid cam ? roller ? cam lobes wiped out ?
#3
Junior Member
JOURNEYMAN
Thread Starter
Join Date: Feb 2008
Posts: 28
seized yes springs inside froze and quit oiling kindof like if the were solids,and new ones work good but now are starting to do it too the motor starts popping not loud popping like times too high and laboring almost dieing.can't set past .004 with feeler gauge hydrolic cam 490 like stock cam all stock lobes rockers and springs look good .maybe cams qround wrong :?: can't figure it out.help any?thanks
#4
Senior Member
RACING JUNKIE
Join Date: Sep 2007
Location: Montvale, VA
Posts: 1,431
Do you have roller rockers?They will always make a little rattling noise.Are you pushrods okay?Best way to set valves is with engine warm but not running.Get the valve your adjusting completely closed to the head,then tighten the nut untilyou just barely get rid of all your slack.Then put 1-1.5 turns of preload on it and walk away.
#5
Junior Member
JOURNEYMAN
Thread Starter
Join Date: Feb 2008
Posts: 28
no rollors,push rods are good.that' how i usually ajust by bumping up the valves but it wont run.u can't even go a 1/4 a turn if u do it one at a time or the motor starts to die.tried it hot cold running not running .what could it be??thanks