adam_ferguson

ok so this question is half tech half quandry. i have 4.10 gears and the max out 3rd gear at just over 80 mph in my car, about 83 to be more exact.. now i have added mods and i'm running 8.5's in the 8th mile , but my mph isn't going up. i have been running in the 80mph consitantly since i was running 8.9's. my sixty foots are getting better and i know i'm planting more power but i can't figure out why i cant get more mph , cause that would help out to get the low 8's. i was wondering if my gears were the source considering where our powerband is. i'm not sure. if i go to 3.73's what kind of 3rd gear mph would i be looking at? would the 3.73's more than likely increase my mph? any answers , TYIA.

adam_ferguson

to be more clear , i meant would 3.73's increase my trap speed , i know they would increase the mile per hour that each gear tops at.

adam_ferguson

anyone? ttt

bigjohnson4.6gt

since you have 4:10's which are geared lower than 3:73's you are losing some top end speed, if you swapped to 3:73's or 3:55's you would see more mph

adam_ferguson

hmm but would my et decrease or increase?

cliffyk

I would speculate that your ET would increase with 3.73s, because of the reduced torque being delivered to the wheels. [/align][/align]With the 4.10s your overall ratios in 1st, 2nd, and 3rd are: 13.82, 8.16, and 5.45:1; with 3.73s these would be 12.57, 7.42, and 4.96:1 and you'd need 10% or more torque from the engine to maintain the same acceleration rate.[/align]