Hey everybody got some pushrod questions. To start with I am running a set of edelbrock performer rpm heads on my stock 89 rebuilt motor. The question I have is that edelbrock says i have to use there hardened pushrods with these heads because of them rubbing the guideplates, but the rods that they want me to use are 6.385 inches long versus the stock size of 6.250. Why are there pushrods longer than the stock ones? I have already checked my cleareance with the stock pushrod and had to shave a slight bit off the top because of there not being enough clearance. I dont want to have to do it again because of a longer rod. Do i have to use 6.385 inch ones or can i use shorter ones? Are they longer for a reason like because of the heads being taller than stock ones? Any help i can get would be great. Thanks guys