Gears VS ET

[CRASH7772]

I know this has been posted prior but after searching for 5 mins I gave up.

What I was wondering was what E.T. did you pick up with what rear gear change? Modded or stock doesn't matter, auto, stick, etc....

Ex 2.73-3.73 .5 seconds
Ex 3.27-4.10 .3 seconds

I know traction is a issue so if tires changed that's fine but if taller/shorter please mention that.

 

[Grn92LX]

I'm hoping to pick up around 4-5mph with my 3.73-4.30 swap. I'm gearing the car for the powerband. With the 3.73's, i'm crossing the traps appx 1,000 rpm's too low. The 4.30's will allow me to cross where I need to and let me use that last 1,000 rpm's of useable powerband.

 

[mob]

Mods i had before and after gear swap:
Bcam
O/r h pipe
flowmaster catback
with a king cobra clutch

stock 3.08 gears: 14.2@99mph with 2.2 60'
JUST 3.73 gears: 13.8@99mph with 2.0 60'

This is on nitto street tires all i did was a gear changed and dropped .4 secs, I would do it in a heart beat again.

Oh and with stock 3.08's id cross the line in 3rd, I have to shift to 4th with the gears.

 

[CRASH7772]

Thanks for the replies...............

Stock I was running 3rd through the trap around 5200 with the 2.73's with ET's in the mid 14's. I have modded little by little and worked down to high 13's before H/C/I swap and with gears and the H/C/I I want 12's. I was going with 3.27's but got a killer deal on 3.55's so I'm dropping those in this weekend. I'm just trying to see how much driving or work I will need to dip into the 12's. I know the 3.27's would cause me to use 4th but not much of it so I'm hoping the 3.55's will put me closer to 5k at the line. The local dyno shop has a 5.0 that puts 260hp to the wheels and trips high 12's at the local strip. I was 225rwhp before H/C/I and had estimates of 290rwhp +/-10 after H/C/I swap. When I can scrape up 4 bills I will hit the dyno for a custom chip and of course new power figures.

 

[Kdubslugga]

Before my gears, with 2.73s i ran a 14.776 at 97.56, with just the 4.10s i went to a 14.210 at 99.10