Cchris1109

iTrader: (11)

Hey guys, i have some shorty headers, 4.10s, Ram AIR, exhaust and what not *all mods in sig*

I am still running a 14.0, coudl the 4.10s be killin my top end since I have an A4 i would think with the mods i could at least keep up with a stock LS1 but looks like i cant, very sad

with just intake and exhaust i did a 14.0 at 99 so basically after doing Ram Air, chip, new wires/plugs, and 4.10s i run a 14.0 as well?

should i go back to a bigger gear or 3.73s? not sure need input

BlackWidow

There is not much difference in 4.10's and 3.73's I believe it is one tooth difference, why not back down to 3.55's. JMO

Cchris1109

iTrader: (11)

ill go back to stock gear and run to find out, but i also forgot to mention i ran a 14.0 at this one track and a 14.0 at another track, could be the tracks

93BlackZ

usually in an A4 3.73's are better for a street/strip duty car, the best way to bring down your time is to put some dr's on and a stall, if it were me i would change to 3.73's but thats your deal, but dr's a stall, and maybe 3.73's and you should drop your ET

Cchris1109

iTrader: (11)

yeah but im still wondering my times are the same after doing a nice ram air mod, gears, and a madz28 tune

The LT1 That Could

iTrader: (3)

3.55 gear isn't available for the f-body 10 bolt. i would say there may be a difference in tracks...especially if they are at a much different altitude. otherwise, the 4.10s would only give you a .1 at the most going from a 3.73. it will take off maybe 1 mph......sine they are already in there, just leave them. In time, you will prolly gain a lil bit in ET and 60'.

hammrman31

yea 3.73s and a stall.

BlackWidow

My badd I was not thinking. What size converter do you have ? and why not spray it also ?

urbanhunter44

iTrader: (1)

I ran 4.10s in my '94 T/A A4. Never ran it back to back at the track to compare but it felt like the top end picked up QUITE a bit from the 3.23s.

With a tune, full exhaust and gears you should be able to hang with an LS1 without problems.... My CAI, LT back exhaust car doesn't have problems.. what's the state of your tune? I see you have new plugs and wires.. how many miles? Optispark ever replaced?

What was your trap speed after the gears? Did you do ANYTHING else to the car besides gears between runs? What were your 60 foots? Entire timeslips would help. What about weather?

Honda Hunter

iTrader: (8)

This makes no since to me. This is my opinion but the gears dont/arent making you lose power top end. It's where it puts you at in the powerband and your shift points.

urbanhunter44

iTrader: (1)

exactly. gears won't make u loose top end, they'll only increase it.

Is your computer tuned for the gears? in other words, did you get madz28 to adjust your transmission's shift points for use with the new gears? If not you'll have problems. My **** banged it's head on the rev limiter for days until I got it tuned.

DeltaT

iTrader: (5)

Of course you'll lose some ultra top end speeds, but remember the 4L60 has a .70:1 overdrive so your 4.10's look like a 2.87 in OD. It shouldn't be killing your top end - it should be killing your tires off the line!

Jim

Honda Hunter

iTrader: (8)

He's reffering to top end power. Note he's reffering to the 1/4. The way I see it, you dont get to do super high speeds on the road anyways so top speed mean diddly.

the_merv

iTrader: (88)

My car was keeping up with LS1's no problem, and that was with a Hypertech Tune, and Pace Setter Mids. You should pick up alot with changing gears. I went from 3.23's to 3.73's and that was a difference. I had the Cam installed at the same time, but the difference in acceleration was very noticible.

sdm1234

iTrader: (8)

do you think he's even making it into 4th? i wouldn't think so.

sdm1234

iTrader: (8)

what were your trap speeds for each run? it sounds like with the higher gearing/torque, you may have spun more, but gained it back with the power.

the_merv

iTrader: (88)

He has to be coming close to 4th with 4.10's..

speed_demon24

iTrader: (6)

I can't believe no one asked this yet, but what was the 60' for both runs, trap speed, and weather conditions.

DeltaT

iTrader: (5)

I missed that, sorry.

Your gears shouldn't mess up your top end power at all - like someone said, they make it easier to get up there. What generally messes up someone's top end is lack of proper breathing - intake/cam/heads/exhaust stuff.

Jim

S8ER95Z

iTrader: (3)

3:42s were the highest I was willing to go with an Auto... I was able to hit 170mph (ran out of room and was only trapping 104 in the 1/4) and run decent 1/4 times... 4:10 = too much gear IMHO unless your ONLY intent is to run the 1/4 mile.