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Will stock clearance heads, valves, etc. on an '05 5.3L take 1.8+ ratio roller rockers?
1.8's will work....but...
Originally Posted by Mangled03gmc
Use a stock ratio rocker.. No really
this is the way to go. Not much to be gained by going to a roller rocker or a higher ratio rocker. If you want the extra lift, get it ground into the cam. Much cheaper that way.