View Single Post
Old 03-21-2006, 06:24 AM   #3 (permalink)
PetChemMan
Senior Member
 
Join Date: Aug 2004
Posts: 85
1973 Olds 455

I assume that you have easy access to the '73 motor. Remember, however, that the 1972-74 motors were loaded with exhaust emissions controls, and represented the poorest performing motors coming from Detroit. In 1975, GM went to exhaust catalysts, and the performance of the motors began to recover since some of the engine emissions controls were removed, and the catalyst was left to do more of the emissions reductions. Prior to 1972, the strict emissions controls were not yet in place.

Even so, there's nothing to stop you from improving the performance of your '73 motor through the usual parts swapping and hot rodding methods.
This site has a lot of good information on the subject in the technical sections. Good Luck !
__________________
Love those Starfires
PetChemMan is offline   Reply With Quote