Engine Question

[99WhiteGT]

Ok so i run a 99 gt and have a automatic with overdrive. So when i hit 4th my accel pretty much dies compared to the lower gears, what kind of options do i have to get that 4th gear accel up?

Whats done: 01 bullit motor w/ bullit heads (3 angle valve job), diablo chip, CAI, UD pullies, TB and Plenum, MAC LT's w/bassani x-pipe and flowmaster 40's back, 4.10 gears, full length subframe connectors. (also just got new timing chain, waterpump, timing guide, upper and lower gaskets, and thermostat)

[ASUSMC]

Accelerating hard in O/D is overall a bad idea for automatics. There really isn't anything you can do beyond a power adder as far as adding noticable power.

[Mr. Austin]

Im hearin $ and super ooo and turbo!!!

[99WhiteGT]

Well if thats the case, should i start with nos and then go to a supercharger? or just wait and go with a supercharger?

[ASUSMC]

If you put a power adder on your car then let it shift into overdrive while under full power you can plan on picking up transmission parts off of whatever road you are on.

[ChuckD]

That will depend on if he does anything to the tranny or not.

[99WhiteGT]

What do you suggest the next step is?

[ASUSMC]

If you want power in 4th gear get a car with a manual. Then you are going to run into the same problem in 5th gear. Overdrives are designed for gas mileage, not for making power.

[99WhiteGT]

Could i swap out a manual into mine?

[ASUSMC]

Absolutely.