Originally Posted by melsie68

How much lobe are you calling "a lot of lift"? Aren't those rockers a 1.850 pivot length? I have done an SB2.2 (brand new heads from HRD flowing past .900, not cup left-overs) which had 1.850 pivot rockers, 1.75 rocker ratio and a .500+ lobe with no issues. What sort of issues are you talking about? Not trying to be a smart ***, just curious...

Originally Posted by Shawn @ VA Speed

they are a 1.550 pivot length.but that is for another discussion.

great looking engine Fraser.

Originally Posted by AES Racing

Well not if they are these 3pc manton pushrods

Performance Induction LS7 heads we found 7/16 pushrod will clear exhaust side,
intake can only clear 3/8" so we had it tapered to 7/16 on the lifter end.