I finally got my 427 to broken in. (Lunati
hydraulic cam, 290/290 duration, [email protected]
, .544 lift) But the only way I could get it to start it was to tighten the intake adjustment nut to Zero lash, using the EO/IC method, and then loosen it 1 turn. (Boy, were they loose....but I got maximum compression of 110 psi there.
After break in, I reset the valves to zero lash + 1/4 turn, again using he EO/IC method, but it will not start. I don't see how this makes a difference, but I'm using Comp roller tip rockers.
I don't think I am overtightening, as I ran the motor for a minute before resetting, to make sure the lifters were pumped, and was very, very careful about stopping when I felt the slightest drag while spinning the push rods.
Why would I get higher compression with loose valves, which would make the intake open later, and close sooner, reducing compression?
What is the problem?
What can I do to fix it?
Thanks in advance for the help.