We run a 318/230 in N/SA. We started with a 8" that would stall about 3000. Every time we loosen the darn converter it would pick up both 60 Ft. and ET. We are on the fourth converter that goes easily to 3800 against the brake (No 2 step) and it show 4800 about 20 feet out. At 12.25 Et we only go about 102 MPH with a 1.56 .60 Ft. Bear in mind our car is 3520 LB. with a touquefite. We had no luck our selves with even a tight 7"..... was just terribly loose by 1000'. We were lucky we get a deal on converter adjustment! It is not unusual to cycle a half dozen converter changes to find out what any of our low horsepower combo's like.. Hope this helps!!! We shift around 6400 and go thru lights 6800. Just my opinion
