My question may be out there a little bit, but I did want to ask to see what, if anything, can one do by playing around with push rod length? Obviously this would change the overall valve lift at the end of the parts train.

Most of the time when I see any info about push rod length, I always read something about the fact that push rod length should match the heads you are using. I understand about the 56-57 lengths being shorter, and that all of the others (54-55, 58-64) were longer. Obviously, in 56 adn 57, all Y blocks came with the ECG 6564 1.54 ratio rocker arms, hence the shorter length. Theoretically, what would happen if one were to use the longer length rod with the hi ratio rockers?

I have early heads on my 292, and one bank has a set of 6564 and the other has (had) a set of 1.43 rockers. I can only assume that one should use push rod length in accordance to rocker arm ratio as mentioned above...correct? Knowing that I am going to put a blower on the motor and I want to get those exhaust gases scavenged at a pretty good rate.....how about using the shorter push rod on the intake rocker and the longer push rod on the exhaust rocker? Would this create a dynamic balance problem with the valve train?

Does all of this sound too whacky to even deal with??? Deos anyone else ever have these crazy thoughts?

Daniel Jessup

Lancaster, California

aka "The Hot Rod Reverend"
check out the 1955 Ford Fairlane build at www.hotrodreverend.com