Thread: roller rocker help

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To "quesstimate" HP you need more imfo, compression ratio, cam lift (for sure), cam duration, intake (dual plane or single plane) just for starters.

The studs on small blocks are usually 3/8", so they would require 3/8" nuts. BUT some builders add 7/16" syuds and for these you would need 7/16" nuts. The firs thing to verify is if the rocker fit the studs properly.

Good Luck

The rockers should be stamped with the ratio. Check that first. Then see if the nut fits down in the rocker. Then see if the rocker trunnion fits the stud. You said the nut won't fit the stud. Is the nut too large or too small for the stud?