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W403 · 01-04-2008, 08:09 AM

If your looking for better flowing ports and still want unleaded fuel capability anything from the #7 heads up from 1972 can and should work. #7s would be the best choice and still have good availability in some older salvage yards. With some basic head work, clean up, knurled guides and valve job you could be back on the road for cheap. Mind you there are lots of choices of course. Also, the #4/4A heads from 403 Trans Ams, and some tow package cars and such( without going into grave detail) have the 2" intakes and 1.5" exhausts. A great tool to obtain that would be able to fully explain all the cylinder heads and they're specs would be the engine tech manual offered by Mondello. And I mean it is very technical and will cover pretty much any questions you may have and then some for the entire Oldsmobile engine. It was the best $25 I spent many years ago.

01-04-2008, 08:09 AM	#2 (permalink)
W403 W403 Join Date: Jan 2008 Posts: 4	Heads up... If your looking for better flowing ports and still want unleaded fuel capability anything from the #7 heads up from 1972 can and should work. #7s would be the best choice and still have good availability in some older salvage yards. With some basic head work, clean up, knurled guides and valve job you could be back on the road for cheap. Mind you there are lots of choices of course. Also, the #4/4A heads from 403 Trans Ams, and some tow package cars and such( without going into grave detail) have the 2" intakes and 1.5" exhausts. A great tool to obtain that would be able to fully explain all the cylinder heads and they're specs would be the engine tech manual offered by Mondello. And I mean it is very technical and will cover pretty much any questions you may have and then some for the entire Oldsmobile engine. It was the best $25 I spent many years ago.