Gears & Axles - 2.73-3.42 1/4 mile ?

are there any good 1/4 miles time with 2.73
plus whats the differance in power from the 2.73-3.42?
thanks

Some guys claim a half second going 3.42's to 4.10's probably very comparable considering its about the same numerical difference.

well reason I ask is because my gears have always been noisy the backlash was set @.008 and I put new bearings well I had enough and i'm pulling them out saturday and putting back my 2.73 I know I will like the gas mileage but not the power loss.
I remember when i switch from 2.73-3.42 I did the 1/8 in the same ET
I did spin off the line alittle but not a whole lot.
it al depends how I like the 2.73 if not them i'm going with the 3.73 but motive gears.

I ran 11.70s with full boltons and 2.73 gears. I swapped those out for 4.10s and went 11.40s. Nothing else changed.

Just time changed not trap speed?

well I did the swap, it feels alittle slower on the same amount of gas I gave before but it smokes the tires more off the start now?
maybe it has something to do with my TC str 2.4
I have reall got on it yet to see any differance,
But I do love the low RPMs on the freeway.

Just time changed not trap speed?

I forget the trap speed. I would have to dig up the slips as it was over two years ago.

when i went from 2.73's to 3.42's i went from 8.5 to 8.1 in the 1/8th and 60ft went from 2.0 to 1.8

mph? ide like to see mph differences

i would also like to know. i just made the swap today and am anxious to hit the track.

i would also like to know. i just made the swap today and am anxious to hit the track.

keep me up to date I wana know to.

86mph to 87mph...

I did mine when the car was still stock. Times went from 14.0 to a 13.5 and 60's went from 2.21 to 2.0 seconds. The 2.73's suck at the strip, I could cross the finish line still in 2nd gear!!! It's like having a damn powerglide :)

well i got the gears installed, finally got on it after a few hundred miles break in, and all i can say is wow, the power difference is awesome. i'm expecting at least .3 off my et in the 1/8th.

well i finally got to the strip last friday, and the results were pretty good. i went from running an 8.86 with a 2.2 60' to an 8.54 with a 2.0 60'. i lost .3 just like i thought :) good gears for an auto car, i dont think i'd want to go much lower unless it was track only.

Your next mod should be TC. I went from constant 13.1s to 12.6s-12.7s on my stall and gear swap (2.73s to 3.42s). Those ETs were on 18" BFG street tires also.

i agree... great gear for autos... did u spin much off the line?

sadly, that 60' was on nitto 555r drag radials so no there was no spin. i could pull a lower 60' if i didnt pussy foot it off of the line lol.

aww just get ya a stall

you didnt need a stall to pull a 1.8 lol

aww just get ya a stall
he has a stall

you didnt need a stall to pull a 1.8 lol


yeah but i needed all the bolt on's plus some MT DR's haha

but stall is next on the list :drive:

he has a stall

that was intended for sunset'01Z not slagger...

yeah i dont have an aftermarket converter yet..



key word, yet :)

hey brad, what wheels do you have?

stock snowflakes :drive: :) :drive:

some boyd coddington smoothies are on my list but thats a few thousand dollars down the road haha

yea i'm running some heavy ass z06 wheels lol

so how much do you think the pulley, maf, and tune really helped?

pulley ~ 10rwhp
mafs ~ -5rwhp haha j/k'ing i have no idea but could tell a small increace

but if u want a mafs go to the chevy dealership and order a 02 z06 ls6 one... there same size and already de-screened might swap mine out for one... might wanna check it to that... dont no if u have to do anything to the computer of if it has the same wire conecters or whatever.... but check into it....

meh, mine is ok for now :)

are your nitto drs on all the time or just for the track?

24/7 baby!!

how many miles u get outta them?

depends on how many times i go to the track, but i've heard 10-20k.

i'll probably get 10-12 :)

pulley ~ 10rwhp
mafs ~ -5rwhp haha j/k'ing i have no idea but could tell a small increace

but if u want a mafs go to the chevy dealership and order a 02 z06 ls6 one... there same size and already de-screened might swap mine out for one... might wanna check it to that... dont no if u have to do anything to the computer of if it has the same wire conecters or whatever.... but check into it....

or he can descreen his :judge: