[DAVID GAGNARD]

Unique 289;

Yes,with bigger bore and shorter stoke it should rev quicker....Low end grunt is probably not lacking in your case especially with a light car....Just checked Summit,the Air Gap you have is most likely a dual plane manifold,although you can get an air gap in single plane.....When I mentioned mufflers,you can run the dyno numbers with or without mufflers.....

If that thing of yours pulls to 6800 rpm,you have a well built motor and a pretty healthy cam,how is it on the street at low rpms???? What length rods does it have????

David