Ok, I did 2 things. Someone suggested I call T&D so I did. Duh, why did I not think of that. They told me that the intake rocker stamped with an E meant 1.65 ratio and the exhaust rocker stamped with a C meant 1.55 ratio. I used a dial indicator to measure actual valve lift off the spring retainer. This was kind of tricky as the lifter would bleed down slowly at high lift. I either needed a solid roller lifter to test with or to remove the valve spring and put in a super light valve spring just to hold the rocker in place. I did neither as I did not have these items laying around. I just cranked the motor over quickly and watched for the highest reading on the dial gauge. Taking these max lift readings and using the stated lobe lift on my cam card I came up with very close to the 1.55 and 1.65 ratios that I got from the T&D tech guy. Now my cam is a Comp Cams 269HR with an intake duration of 218 and an exhaust duration of 212. It has shows intake lift of .511 and an exhaust lift of .504. The intake lobe lift is .33 and the exhaust lobe lift is .325. These numbers give an assumed rocker arm ratio of 1.55. Right? Now, with my actual rocker arm ratios of 1.55 and 1.65 that gives an intake valve lift of .545 and an exhaust lift of .504. Bear with me here as I am not an engine expert. So assuming that the 1.65 and 1.55 ratios are correct and given my cam information and the rest of my combo as stated in my sig, does this combination of cam and rocker arm ratios make sense or is it a problem? The car has been running decent with these components but I recently blew a head gasket due to a tuning error an my part and I am putting the engine back together myself and taking a closer look at everything. Thanks for your input everyone.
