Thread: BBC rocker arms
View Single Post
  #54  
Old 03-09-2023, 10:19 AM
78w72 78w72 is offline
Ultimate Warrior
 
Join Date: Nov 2007
Location: iowa
Posts: 4,723
Default

Quote:
Originally Posted by Skip Fix View Post
If you had let’s say a ideal geometry working with a 1.5 rocker and you switched to 1.65s which moved the cup .050” closer to the stud, then a .050” longer push rod should get you back to having hood geometry.

With my HS they took the same pushrod. And I'm betting RAIVs were just longer because of the longer valve not the pushrod cup and the stamped rocker.
i have HS 1.5 rockers and OF cam on E-heads with no issues.

dave at SD told me the same thing regarding HS 1.65 rockers vs 1.5. i was/am considering going to 1.65 from the current 1.5 & asked what pushrod length i would need, he said for the 1.65 HS rockers, i can use the same length i have for my HS 1.5.