Try this site: http://www.teufert.net/pontiac/page2.htm The YN code and #17 heads lead me to believe you have a 68'tempest engine not a 69' which i think used #47, trivial,either way it was 265hp What is your goal for this engine? Personally i think you need better flowing heads if you want any performance out of that engine.
David
http://FirstGenFirebird.org/show/closeup.mv?CarID=571 If i don't get this car back on the road soon i'm gonna go postal! On a quest for FGF knowledge 1968 Pontiac Firebird Convertible 1969 Oldsmobile Cutlass "S" Convertible *Sold*
