I think you are right, on the BBC pro stock heads are
symetrical and are not legal in Production.
I think both of you are right about the the SB2. It has
symetrical cyls. and therefore are not legal because
the intake and exhaust manifolds are not the same the
23dg heads have simiesd intakes and the two center
exhaust are no longer together.
****************************************
Well, this is it.
Along with the answers from John Beckett and Dave Dalhgren I believe the issue
of SB2 Heads being allowed in Production classes is resolved. The heads are
not legal. Aftermarket heads which retain the original port configuration are
allowed.
Dave,
Your matrix looks correct. I like it, maybe use it in the rulebook. I'll take
it to the next meeting.
DW
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