JDSfastGN
Well-Known Member
- Joined
- Jun 16, 2001
Can somebody School me on M&A aluminum heads? J I recently purchased a set of M&A aluminum heads that were ported professionally. They have the casting of Stage III on the underside that I understand all the production runs have marked on them. I have a few pictures of the other casting numbers that the seller sent me. Does anybody else make a center bolt valve cover that fit these heads with the M&A rockers that will clear the heater box better? I will run the M&A valve covers that came with the heads if I have to but they are a real PITA to get on and off In the car if I need to do anything on the passenger side head. Do the heads require a different set of head studs than I currently run for my ported 8445s? If I keep my current cam with .516 lift will the M&A rockers (not sure on brand? Crane?) will they be ok? I have read about their valvetrain geometry issues but haven’t found any conclusive reports on failures or issues. I am hoping they are the 3rd batch of heads they produced since cracking is a concern with the first 2 production runs. I plan on taking them into my machine shop to have pressure checked and get a couple of runners flowed to verify the port work. Thanks for any help or advice on these heads.
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