Bman2000

you better not be running those times in a 2013 gt500. id have to find you and take the keys away. slap you around a bit, then throw the book at you

stangalator

What are your shift points? With cams you should be shifting in the 6100-6200 area. Do you have a dyno graph of your torque curve?

EDIT:
There is a bit of misinformation on when to shift, i actually did the math and even with my old set up (pi swap and a few goodies) my shift points were 6150, 6000, 5800 (6000 for 5th, never get there in a 1/4). Even though your power is dropping off you shouldnt shift until basically the resulting shift will bring you more torque then the ratio of the current gear ratio/next gear ratio. You want the maximum torque being applied to the road of course. I made a matlab program to graph these in my spare time. It shows a basically stock torque curve modified for each gear (T45), each curve goes from ~2000 to 6200rpm.

Bman2000

all i know about shift points was i shifted at 6k each gear, and trapped in 3rd with my simple bolt ons. people used to say you get faster times by shifting early out of 3rd into 4th. But i consistently ran low 13s not doing that. Full weight car best time 13.39 stock tires. no idea why my shift points are now, but i ran a 12.4 shifting at 5800 all 4 gears. of course im limited at this point by my rev limiter because of fuel issues its only 5900

72MachOne99GT

It's not a ZL1

Cali_Swag

I haven't done a dyno tune yet, I'm waiting until this summer. I'm not sure exactly when I am shifting in 1st or 2nd but its close to red line. When in 3rd I wait until 5700-6000 rpm.

TRUEBLUE3934

I still say it isn't making the power it should with your mods(trap is too low).
I'd consider having a custom tune done to optimize your set-up and to verify A/F and timing are correct.

WhiteFoxGT

I've been trying to tell him the same thing

luke1333

get j&m lca i just installed and the new traction is unreal on my stockers with 245 on them! you would drop a ton with them in quarter mile!