3.73s or 4.10s ???
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From: Gardnerville, NV.
3.73s or 4.10s ??? I'm going to do a gear swap and can't decide.
The car is an 02 SS with the T56. I should be in the 400-420rwhp range when I'm done with the mods. I'm not a 1320 guy. I plan on street, highway and an occiasional Solo II event. Who has experiance with the different ratios? I'm looking for all around performance.
All advice welcome
The car is an 02 SS with the T56. I should be in the 400-420rwhp range when I'm done with the mods. I'm not a 1320 guy. I plan on street, highway and an occiasional Solo II event. Who has experiance with the different ratios? I'm looking for all around performance.
All advice welcome
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From: Cypress, TX
Depends on what your primary fun factor will be. Roadrace and AutoX, 3.73. Drag race, 4.10. I have 3.73, and it did make a small difference. My first 13.1x time was after installing the new gears. Best before that was 13.3x. Driver could've had just as much to do with the better time since I was more experienced when I changed the gears, so there's no telling. I plan on forced induction at some point, so I doubt I'll ever run anything beyond 3.73.
Staging Lane
Joined: Nov 2003
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From: Arizona
Originally Posted by ssheets
I'm going to do a gear swap and can't decide.
The car is an 02 SS with the T56. I should be in the 400-420rwhp range when I'm done with the mods. I'm not a 1320 guy. I plan on street, highway and an occiasional Solo II event. Who has experiance with the different ratios? I'm looking for all around performance.
All advice welcome
The car is an 02 SS with the T56. I should be in the 400-420rwhp range when I'm done with the mods. I'm not a 1320 guy. I plan on street, highway and an occiasional Solo II event. Who has experiance with the different ratios? I'm looking for all around performance.
All advice welcome
3:73 rear end with an M12 tranny (or just change the first three gears of your M6) is the ultimate for daily driveability and strip performance.The first three gears will equal a 4:10 w/M6.
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From: michigan; where even our licens plates rust
this is how i have always done it... figgure out what rpm you want to be at cruzing on the highway and use this formula.
rpm formula: mph x axle ratio x 336 / tire diameter
this has worked for me in the past. the therory is you want to have the quickest 'snap' to your accelration as possible but you realy dont want to be sitting at 4000 rpm at 70mph on the highway
rpm formula: mph x axle ratio x 336 / tire diameter
this has worked for me in the past. the therory is you want to have the quickest 'snap' to your accelration as possible but you realy dont want to be sitting at 4000 rpm at 70mph on the highway
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From: Calgary
You can use this calculator to find the right rpm that you want. With 400hp I'd leave it stock. You won't have to worry so much about breaking it then.
http://www.f-body.org/gears/
http://www.f-body.org/gears/
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From: Miami
I have 4.10's on the stock 10 bolt. It's a great setup for running a big cam, as the gearing makes up for any weak-kneed low rpms. I have the setup for street/strip (until the 10 bolt breaks, then I'll go 9" and 4.11's).
For road racing, maybe 3.73's would be best.
For road racing, maybe 3.73's would be best.
Staging Lane
Joined: Dec 2001
Posts: 61
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From: Lewisville, Tx
Most of the guys are saying 4.10s because of the acceleration factor, which is all well and good.
But
Since you said you mostly street/highway race, I'm going to tell you to get 3.73s. I went from 3.42s to 3.73s and from a roll, they are the best gear you can get. You will pull a stock geared car in all gears, and if you plan on high speed racing, you'll own 4.10 cars too. Trust me on this one.
Blake
But
Since you said you mostly street/highway race, I'm going to tell you to get 3.73s. I went from 3.42s to 3.73s and from a roll, they are the best gear you can get. You will pull a stock geared car in all gears, and if you plan on high speed racing, you'll own 4.10 cars too. Trust me on this one.
Blake
Staging Lane
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From: Lewisville, Tx
Originally Posted by z98
4.10's will beat 3.73's at any given speed (ignoring things like traction).
You take equal horsepower cars w/ equal drivers' skill. Leave one with 3.42s and put 4.10s in the other. The 4.10 car will jump out first but by the top of 4th thru 5th the 3.42 car will pull back and ahead of the 4.10 car.
Don't believe me? Ask around. The guy said he is NOT a track guy, he's a street racer. If you just want to run stop light to stop light, 4.10s will be fine. If you want to hop out on the highway and play with the big boys you need to stick with 3.73s or 3.42s. Preferably 3.73s if you're pushing 400 rwhp.
Blake
Staging Lane
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From: Lewisville, Tx
Originally Posted by z98
All I can do is say physics proves you wrong.
Hell, a guy here a while back was bitching because he put 3.73s in his car and his buddy with 3.42s pulls him in 4th gear. Before he went to 3.73s he would put 2 cars on him and stay there.
What happened to physics there?????
Look dude I'm not here to argue with you, I'm just telling you what I know.
Shorter gears (numerically higher) do not always make the best highway gear.
If you're racing to 100 mph fine. Unfortunately for me, noone in a Vette or anything else for that matter (Except a Nova one night) has ever ran me that low. Nearly every damn time I get run up to well over 130 mph. I sure as hell would hate to be stuck in a top end race with 4.30 gears
Blake
