According to EFI diy the head flows as good as my Kirby head.
MBHD
Yea, that really says something about the advances in technology, when you can take a $600 junkyard engine and spend only a couple of hours cleaning the ports up and being able to flow comparative to a top of the ladder fully ported performance/race head that probably cost 4 or 5 times what the whole 4200 engine cost.
