I'm wondering what the configuration of the GM "Fast Burn" aluminum heads is, i.e. what intake and exhaust manifolds mate up with them? Can they be installed on an old 327 (870) block?
Also, what is the reason that the Vortec-type heads don't work with old manifolds?
Thanks,
Also, what is the reason that the Vortec-type heads don't work with old manifolds?
Thanks,
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