idrag2

Well the topic says it all, what do you consider to be the best possiable street racing grears.........Thought about running 4.11's but the rev's would be to high....so what gears do you run?

mattRS

i dont know about you, but to get to the races in dallas you have to drive a while on the highway, so anything above 3.73 is out of the question. plus, with even 3.73s you are goign to be around 3500 rpms at 70 mph. i think some 3.23s would be the best bet. still pull good through the top end.

ChillPhatCat

1st, 2nd, 3rd, maybe 4th j/k

3.73 is probably the best compromise, but don't go with them if you do daily highway driving. I'm pretty happy with 3.23's.


:lala: :lala: :lala: :lala:

SoCo80p

iTrader: (5)

regarless of track or street racing, you need gears that best fit your engine/trans combo, if you have a mild or basically stock engine a 3.23 or 3.42 will be your best choice, i more heavly built engine with a nice stall about 2,300-2,800 would like a 3.42-3.73 gear, a big cammed, ported or aftermarket hedded engine with a 3,000 or so stall likes a 3.73-4.33 but putting too big of a gear on a car that cant handle it will make the car SLOWER then if it had a 2.xx gear or low numericle 3.xx

SoCo80p

iTrader: (5)

305 oh man,.....just looked at your sig. i would say a 3.23 will be ideal for your setup, possible a 3.42 if you want to push it.

85transamtpi

If you are still running the stock L03 cam, then I wouldnt go any higher than 3.23's. Keep in mind that the 700r4 has a pretty short first gear anyway...so you really shouldnt need too much more. I have 3.27's (stupid 9 bolt) and love them.

-peace

Mark A Shields

Exactly, I found this out the hard way. After I got 3:73s I found out my cam stops making power past 3500 rpms. Needless to say after $500 for gears and a swap plus a cat-back, I didn't even drop a 1/10 in the 1/4 because I selected gears that kept me out of my power range.

Ray87Z

I have 3.42s in both my current 87Z and my old 86 IROC. I think either the 3.42s or 3.23s are about the best compromise. I also find myself racing from highway rolls quite a bit, and with the infamous 700r4s that won't hit 4th gear at WOT the extra mph 3.42s afford you is nice. Also, just cruising the RPMs are nice and tolerable, while still giving you the gearing to get going plenty quick.

3.73s on most cars will just help you have more traction problems launching, 3.42s are good enough down low, yet still good up top. My vote is for them...

idrag2

Ok well I shift my car at 5200 ....belive it or not...yes its a lo3.....I am sure. But from stop light to stop light I never get out of 1st gear and in the quarter I never get out of 2nd gear.........I thought about 3.73's but very unsure.........did I change anyone's opions?

SoCo80p

iTrader: (5)

find out what you have now, its its a WS-6 car then your probley have the 3.23's and i would stick with them. 3.73 will give you no performance gain. if you do have a 2.xx gear go with a 3.23 a cam swap will also make a BIG improvement in performance.

ChevyLuva3

Call me crazy, but... shouldn't a MODERATOR know the answer to this.

IROCThe5.7L

I think Moderators know alot. But not everything

1fastIROC

Well , I've got 4.10's in my car, but I don't run the TPI setup anymore. Read my signature.

AGRESSIVE RACER

I agree with everyone that 3.73's are the best for the street. Anything else would suck while on the highway or just cruising.

iroc22

3.23's with the T5, and 3.42 with the th700r4

idrag2

What type of Rev's would I be turning with 3.23 vs 3.42 vs 3.73? Sorry so many questions I just don't want to make the same mistake that alot of other people did........Oh yeah and right now I have a 25 inch tall tire and they are almost bald.....

Mark A Shields

I got 25" tires too w/3:73s, @55mph 2000 rpms, 70 mph @2500 rpms.

ChillPhatCat

I think the above statement brings up a good point... if you're going to run low profile tires, you will get a lower final drive ratio so to speak which may make 3.73's liveable. I run 26" tires which put me at 55 around 1900 RPM...

I have to ask one question though, are those 25" tires stock, and if not have you calibrated the speedometer correctly?

NJ SPEEDER

street races are very short, most barely go 1/8 mile. so hook is step one and then as much gear as you can get. a lot of the serious regulars in philly run 4.88 and 5.18's to give you an idea.

later
tim

Mark A Shields

No, the tires aren't stock and the speedo isn't calibrated. That will be fixed this spring. I figured the rpms and speed in 2 ways, one the calculator part of this website, plus I had someone drive along beside me at both speeds.

xxwarrior36xx

I am looking to do the same as you. A friend of mine has 3.73's adn he runs great, he is upping it to a 4.10. I think that is too much and a 3.73 is too little. I am going to get the inbetween a 3.90 gear. Richmond makes one and I am going to grab it. The best of both worlds. I looked it up and with my five speed I will run 2, 800rpm at 76 mph that not that bad. I think