Thread: 1.5 to 1.6 rocker swap

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i would not wast the money as for lift. i have used bigger rocker s when the lobe were as big as what can be put on the cam core and we want more lobe lift 500 and we want 900+ lift . things that can hit ... some have listed and things not added to the list. push rod guid slot in heads or push rods hitting block and head . needing more valve spring . pressed in rocker studs ? pushrod flex .then pushrod hitting rocker body need to check rocker cup and push rod tip if angle starts getting bad i used 210 rocker tips if the rocker cup looks like pushrod side of tip may rim off the push rod cup . like other said you need to know your ok with piston to valve . stud to rocker body slot . valve guid to valve spring retainer . .valve retainer to valve seal . then coil bind that is were the spring stacks up as for power do not thing you will see any on the street. there is better made steel stamped rocker arms like stockers but are closer to 1.5 and they sell 1.6 in steel stamp if you still feel the need . i think the biggest wast of money are roller tip rocker arms .but it your money.. going up from 1.5 to 1.6 it easy to work out the math if you know the lobe lift. lets say its 450 its not we just use this number. times the rocker arm so 1.5 x450=675 then 1.6x450 =720 then 1.7x 450=765 . some of the stuff i play with is much bigger like 500 lobe X1.7=850 500 lobe x900 lift (: there is many that think there new roller rockers are 1.5 the great thing about rocker arms not many are the same and there no rule that all companys follow as this is not SAE part so on after market rockers . there many come up with different ratio as push rod cup and were it is on the rocker then were stud is in the body size of roller tip size of body i have spent many hours the a dail indicator mounted off the valve retainer reading full sweep on the rocker arms can be a real eye opener