anyone tell me what rpm to shift at for the best 1/4 mile times with my o4 gt

 

Below redline.

Seriously, I would venture to guess somewhere ~ the peak torque RPM.

 

well, the one guy who drove the 03 cobra said its best to pretend like the tach is slow. so I would shift at 6200, that way you never accidently bump the limiter. dunno if that helps.

 

i am adding a raptor shift light this week that should take the not so accurate stock tach out of the picture

 

i havent taken ours to the track yet. but it feels strong right upto redline. so i would just shift alittle before that. but besure to turnoff the T/C before you launch! ouch the sudden lurch when it kicks on stinkS!

 

Doesn't the Cobra have a different Redline than the GT?

 

yes it does. My 99 GT's redline is at 5750(well, the tach says it is, but it doesnt hit the limiter till 6000), and my 03 cobras redline is at 6500.

 

I believe the limiter on the 2v is set at 6250 rpm, its about there, I've bumped into it many times.

 

hmmm, its been a while since ive driven the gt, so you may be right. i dont think it would be different for a 99 and an 02.

 

fuel cut-off on a 99+ gt is 6250. You'll stop making power WAY before that. Best bet is to shift around 5500-5600. That will take you far enough past your peak Hp (around 5200) and drop you right around the beginning of the peak HP curve. Should allow you to pull through it quite nicely.

 

doesnt the redline start at 5500? never really paid any attention when driving it. which is RARELY out of the 3K since april i might have put 500-600. and most of that was on one trip! LOL

 

Here is a 2001 Cobra gauge.

 

I think this is a 04 GT: