I am running a 4.11 now in my 1970 Mustang. The car runs 10.81 at 124 mph in the 1/4. I leave at 5600 rpm and shift at 5800 rpm and cross at 5800 rpm. I am running a 29.5 inch slick. I am running a PG with a 1.76 low gear.I will be running some 1/8 mile race this year and I wounted to know what gear would be good in the 1/8 mile. The dyno test said that my mtr. was still making power up to 6200 rpm but I am trying to be easy on it. Thanks for your time.