Originally Posted by AndyF

. I suspect the lifters are just starting to complain at 5800 rpm. It hits earlier in a BBF due to the 1.73 rocker ratio.


Not saying you guys aren't right, but I don't understand the how and why.

Yes more rocker ratio puts more load on the lifter but to me it's not load on the lifter but a loss of control. I can't eyball the OD of the spring/retainers but looks huge (heavy)/steel to me.

69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700