mercruiser 120 rocker arm compatibility question

nikkievix

Seaman Apprentice
Joined
Apr 20, 2017
Messages
46
hi guys. long time no post. any way...got the boat inspected, passed and took it out last week after getting my tags for it to do some fishing. caught a few nice strippers and a couple rainbow trout. but on the way back to the ramp, the engine was making a clattering sound and when i got back to the camp site, i pulled the rocker cover off to find 3 loose rocker arms and the #2 rocker on the exhaust had a twist. my question is.......what size chevy engine can i get rockers from? can i use the ones for a more than abundant 350 or other chevy small block...or am i stuck trying to source ones specificly for the 153/230 inlines. i know there is nothing special about the design of these...just generic stamped steel, but i know the rocker ration is critical. just hope the SB chevy ones fit, cuz i can order a set fairly cheap from jegs or summit.
 

Alumarine

Captain
Joined
Feb 22, 2005
Messages
3,757
The Sealed Power number is R-832 which is a standard gm inline 4 or 6 rocker I believe.
 
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