Originally Posted by RATTRAP


Spring pressure is 300 seat & 750 open.


You don't need to remove the inner spring to run in a solid roller. There shouldn't be much "break in" going on.

If running a bushed lifter you will likely need to break those in with some rpm.


Last edited by INTMD8; 08/25/22 10:55 AM.
69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700