Cascade Crew

jakemk8706 · Posted: Wed Apr 25, 2007 4:03 pm Post subject: questiion on gears.

so im gonna get gears next payday. and lately iv been researching. i def wanna go 3.73. but the "chevy guy" at my local baxters says since i have overdrive i can run 4.10 and still have economy. but i dont know i think that may be too much for a daily driver. what do you think.

aaron_sK · Posted: Wed Apr 25, 2007 4:07 pm Post subject:

700R4? If so, smack that Baxter's guy. With 3.73's and a near-stock TPI you'll be rolling about 12mpg with hard city driving.

jakemk8706 · Posted: Wed Apr 25, 2007 4:08 pm Post subject:

ya i know. iv kinda wanted to do that for awhile. me and him have got into an argument or two about how much of a d bag he is.

rjmcgee · The Hammer Joined: 08 Jan 2004 Posts: 2328

I love my 4.10 gears, of course I don't have a slushbox tranny or tuned puss injection. Razz

Don't go over 3.73's.

aaron_sK · Posted: Wed Apr 25, 2007 4:13 pm Post subject:

See the thing about the 700R4 is that it's first gear is 3.06, which is deep as hell. When I was running it with my 3.73 9-bolt on the street my car would shift into second almost instantly off a hard launch (assuming I actually got traction). It wont be as extreme for you since you're not running a higher stall or a shift kit, but it will still make your first gear pretty useless.

This on top of the fact that your also pushing the TPI even farther out of it's sweet spot.

QwkTrip · Posted: Wed Apr 25, 2007 4:22 pm Post subject:

4.10:1 is too much for your car. Be sure to consider the final gear ratio of your car, including the transmission, rear axle, and tire size. All of them effect the torque put to the ground. Your 700R4 transmission has a very aggressive 1st gear ratio over 3:1. That means you can have less gear in the rear axle and have the same final gear ratio as an older muscle car with 4.10 gears and a 3-speed auto.

Also, your engine isn't exactly a revving monster and has strong low end and mid range torque. You want to take advantage of that and let the engine operate in that range. I think 3.73 is more than enough. Maybe even 3.5x gears would work better. I had 3.45 gears in my supercharged Vette with a 6-speed transmission.

aaron_sK · Posted: Wed Apr 25, 2007 4:24 pm Post subject:

rjmcgee · The Hammer Joined: 08 Jan 2004 Posts: 2328

It's not a World Class, but it has the 2.95 first and the .63 overdrive.

jakemk8706 · Posted: Wed Apr 25, 2007 4:43 pm Post subject:

soooo. 3.73's???

QwkTrip · Posted: Wed Apr 25, 2007 5:35 pm Post subject:

Definitely no more than 3.73.

BigDaddyVu · Posted: Wed Apr 25, 2007 5:39 pm Post subject:

4.10's work great on t-56

305 302eater · Posted: Wed Apr 25, 2007 8:22 pm Post subject:

I had 4.10 with my t56 and i didn't like it. My first gear was so short it wasn't even funny. I have 3.73 and i can actually use my torque. The highest i would go on t-5 is 3.73. personally i would go with some 3.55 or what ever. keep it in the power band a little longer. Smile

aaron_sK · Posted: Wed Apr 25, 2007 8:25 pm Post subject:

Jake, out of curiosity, what gears are in the car now?

rjmcgee · The Hammer Joined: 08 Jan 2004 Posts: 2328

aaron_sK · Posted: Wed Apr 25, 2007 8:59 pm Post subject:

If he does go with a cam and StealthRam the gears will help him out. TPI pushes past it's band very fast with gears. When I was streeting the IROC I ran dead even on a brand new 350Z off the line, but (no lie) lost to a Ford Taurus from a 110mph roll. All bottom end.

BTW, Rod, you have one of the best looking torque "curves" I've ever seen. 300rwtq from 2K to 5K. Thumbs up

jakemk8706 · Posted: Wed Apr 25, 2007 9:10 pm Post subject:

right now i got stock...so i thinks it's 3.23

aaron_sK · Posted: Wed Apr 25, 2007 9:12 pm Post subject:

Damn dude, why waste time with gears? I thought you had like 2.73's or something. Lots of other things that will net you more performance than that.

Twilightoptics · Posted: Wed Apr 25, 2007 9:22 pm Post subject:

No use going over 3.73 if youre motor isn't designed for it.

jakemk8706 · Posted: Wed Apr 25, 2007 9:28 pm Post subject:

ya i didnt want to go over that...i just was just wondering what you guys thought.

Quasi-Traction · Posted: Wed Apr 25, 2007 10:43 pm Post subject: