Just like title says, I have stock 3.42 gears and thinking of getting 4.10 gears. My mods are in my sig. I went to the track last week and got a 12.7@119mph w/ 2.2 60ft.
I know its not good for the 10 bolt but will be saving for a 9" or moser down the road. In the mean time i want to improve the times a little. I also ran with 18" street tires so i will be going out with DR's next time at the track.
So you guys think with 4.10's I can get those times down to low 12's? Car pulls like a freight train and I know it has lots of potential
DR's and 3.73s gave me about a tenth and a half in the 8th. havent ran it in the quarter with this setup yet. but i imagine its worth at least the same for your setup. id go easy on the 10 bolt with you being an M6 car and all. your 60fts could use a lil help. thats prolly worth a tenth or two if you can get that down to 1.7-1.8s.
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Any car can be an SS, but only a Camaro can be a Z/28
wouldn't get 4.10's if i were you until you got down launching w/ the 3.42's.
4.10's will REALLY wake your car up, but it's going to be harder to launch. and as of right now, you are getting off the line HORRIBLY. a 2.2 60' is kind of bad dude.
after you get that down, step up to the 4.10's. with a goood launch, drag radials, and 4.10's, you will be knocking on 11's door with that kind of mph.
trust me, the track prep sucks because it was a street legal drag night so they dont do all the prepping. I've got my launching down but with the low gears you kinda have to bring the rpms high to take off, AND by doing so i just spin the tires. If i bring the rpms low, then it bogs a little. My best 60ft with the 18" street tires that night was 2.0 but missed 3rd
yes i know the 10 bolt is a weak link, but like i said i will be saving up down the road for a better rear. I just wanna know how much the 4.10's will help
You won't gain a thing and will actually lose until you get traction. Gears make things worse. 119 MPH should be low 11's but you managed a 12.7. That's stock times. Get the suspension/tires working first before doing the gears.
Maybe .1-.2 when you get there
__________________ 02 WS-6 Patriot Stg 2 l 224/228 Comp Cam l FAST 92mm l 96mm TB l Circle-D 3700 l MWC 9" W/3.70's l 3800 lb raceweight 11.41@119.12 MPH 1.54 60' 400 RWHP
You won't gain a thing and will actually lose until you get traction. Gears make things worse. 119 MPH should be low 11's but you managed a 12.7. That's stock times. Get the suspension/tires working first before doing the gears.
Maybe .1-.2 when you get there
he is no where near low 11's. you have to remember that he's spinning off the line... when you spin off the line you gain mph, but lose ET
and vice versa, when you bog, it lowers your mph and your ET
and when he gets gears, that's going to lower his mph even more
My guesstimate with tires/4.10's, a solid 1.70 60's, he/she should be somewhere in either the very very low 12's or high 11's at around ~116 mph
well i would slip the clutch but it sucks. Its hard to shift sometimes after i get on it. I see what you guys are saying though. With the gears it will be harder to launch, but i wont have to slip the clutch more right?
If i get the gears, for sure im getting some dr's to help out traction
get more seat time and run it in the fall. my z28 has gone 12.34@ 112 on the stock 342 rear. stock motor, lid, no muffler, ported stock maf and tune with a sticky tire 1.75 60' ive hit 1.8s on street tires. get more seat time or a sticky tire
__________________ -Ron-
1998 Pontiac T/A M6- 11.89@118.27mph 1.83 60' Stock internals, bolt ons, Chummmma tune, stock 3.42 rear 245 50 16 sumitomo street tires out back
1999 Z28 M6 The Slow Whip w/ 01 LS1. lid, ported stock maf and TB, muffler delete, Chummmma tune 12.34@112.26mph 1.75 60' 255 50 16 drag radials and skinnies
Shit with that mph you will be in the 11's no problem with a good 60'. Will probably take some ET streets or something along those lines though. 119-120 mph spinning most of the way through 1st and 2nd is enough for mid 11's no problem. You car runs nice for a cam only car, great power.
After swappin my stock gears, for the motive 4.10s, I have to admit, it took alittle more to keep the tires from spinnin, but the otherside of that is, I stay right in my power, even when I shift, and it will pull alittle harder in 2nd and 3rd.. after you do gears, play with some tire size, and keep yourself from shifting into 4th. I run a 27" dr.. it helps there too..
With your idea of doing gears, and then putting some tires.. great go for it, but remember when you play with fire you can get burnt.. thus, you put that kinda force down on a geared stock 10, you could have issues!!! who knows!! Just dont leave on a 200 shot, at about 5500rpm.. and you should be fine.. LMAO!!!
if you have any questions hit me up.. I have done this exact same swap.
well im pretty sure getting the gears will put me into 4th gear at the end of the traps. I was ending in 3rd gear right at the end with the stock 3.42's. But yeah, i will look for some 27"-28" tall slicks.
I wont dump the clutch either with that 10 bolt, just will slip it out of the hole at first. Maybe 4k max dump
yes i know the 10 bolt is a wak link, but like i said i will be saving up down the road for a better rear. I just wanna know how much the 4.10's will help
I say keep your gearing and continue to save for a better rear. Maybe find a 26" slick
Are you running n2o? Your trap is very high for a cam only.
nope, no juice. Would like to have some though in the future
I looked at my timeslip again today and the speed was actually 118.6mph. My bad, so it was almost 119mph. I dont care if the gears will drop my mph, i just want those low et's
Will 4.10 gears drop my 1/4 time? 
2002 Trans Am (VERT) M6 
