1:6:1 rocker arms?

[DesertRat]

Can I install 1.6:1 roller tip rockers on my stock shafts and gain duration and lift without reworking everything? The heads are together and the engine is ready to assemble.
TIA, Rat:-D

 

[70aarcuda]

yes...the shafts dont know what ratio is on them..

 

[ramcharger]

You'll gain more lift than you will duration. The 1.6 rockers will move the pushrod in toward the rocker shaft so you may have to enlarge the pushrod holes. Custom pushrods might be mandatory and you also want to be sure that the increased lift doesn't cause piston to valve clearance issues, spring bind or retainer to guide issues.