how does the 4.57R affect the 0-60 mph time? and 1/4 mile time? on NA setup?

 

the quarter time is said to be about a half second better.

 

if you're planning on this for your ap2, keep in mind that you finish the 1/4 mile now at the end of 4th.. .gears any shorter would require a 5th gear shift, and the addittional time it takes to shift may actually make your 1/4 miles time worse.

 

hmm...........good point.

 

yea ive been giving gears alot of thought lately. i'd be curious to see if an ap2 with a lot of work done needs a 5th gear shift. say an ap2 with intake, tb, header, test pipe, exhaust.. only then may a gear be worthwhile because if you already have a 5th gear shift because of the added power, increasing the time you're in 5th won't hurt as much as the time it takes to shift another gear.

 

i think ap2 pulls good enough that's only ap1 needs to pull harder

 

They pull the same amount, sorry.

 

does any1 have "actual" data from b4 & after 4.57R change?

 

This is the 2nd time you've made such a statement in the 4 days you've been here. So, i'll tell you the same thing I told you last time, which you are going to learn very quickly here.

the ap2 doesn't pull any harder than the ap1. they both run the same in the 1/4 mile, and for argument's sake are the same speed. anyone who says otherwise has no idea what they're talking about.

 

I've had a 13.6 so far (with less than decent 60' times). I have a friend who had a 13.3. twice.

No one can give you 0-60 data because no one has really tried to accurately measure it. (ie using an accelerometer while at the track to verify accuracy)