The only thing I'm worried about is if I can use a hydraulic lifter cylinder heads with the mechanical lifter set up on my 67. I have not found any information either way as to if this is possible or not. I have someone telling me that I have to use heads that have mechanical lifters.
You can use any LA heads, nothing about a head dictates whether or not you can or can’t use either type of lifter. You would need different pushrods as they are different for both applications.
