Quote:
Originally Posted by ramairformula74
Combustion chamber shot
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2.11 intake valves.
there were three different secondary codes on the '73-74 4X -400 heads,
with the 400 2bbl version having the smaller 1.96" intake valves.
have gone through core supply's of Pontiac cyl heads before looking for 2.11-1.66 400 4X heads.. In every case, was looking for a certain date range pair to be rebuilt, & then go on a '73 or '74 TransAm's original 455 Dport shortblock.
GLWS