My car has run 1.53 60ft 11.23@119. Trap rpm is 7000 with 4.88's and hoosier radial 29.5 tall 92.5 circumference. If I drop my gear ratio to 4.30 or 4.10 what should I expect. Any recommendations?

The results will be that you will go down the track further in 1st and 2nd gear before going into high, which means the motor will cross the finish line at a lower RPM ,possibly I say possibly because your motor may be cammed to pull real hard above 6000 rpm unlike a motor that is designed and cammed to pull hard from 4000 RPM to 6000 RPM. What size motor and what are the cam specs and intake lobe center with the lobe seperartion angle? What I have found on Mopar motors is the smaller C.I. motors need more rear gear ratio than the larger C.I. motors do, even in the same family of motors, BB vs SB My Duster ran the same ET (10;40s)and MPH (128.+)with 3:73, 3:91 and 4:10 gears, the electric fuel pump was the problem in the end

Engine is a 360 with ported edelbrock performer rpm heads and a MP .590 cam 108 lsa. I shift at 6500 and it never drops below 5500 on the shift recovery points. Running an aeromotive 150 gph fuel pump fuel pressure set at 7psi at the regulator.

Our 71 Dart 360 is similar to yours except we run a hughes 260/264 flat tappet..

tires are hooiser 10 x 29 slicks..with a 4.56 gear..

is the 590 cam advanced or straight up?

cam is advanced 2 degrees in @ 106. What are the specs on that hughes cam? What heads? Shift points and trap rpm?