Question about gears
Thread Starter
Pro
Joined: May 2006
Posts: 743
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From: Toms River NJ
Question about gears
I have an 07 c6 z51 mn6 w/ AR headers, BB Exhaust, 345 PS2's in the back and a few other goodies. I don't track my car, it's not a daily driver either. I'm looking for some more power. I'm considering doing a cam. But before I take that step, I realized that gears might make more sense. Although, now i'm considering both. For 0-60, 30-80 acceleration on my car, what gears would make the most sense? Also what is the cost roughly installed?
Any other input or suggestions are welcome.
At this point, i'm not interested in FI.
Any other input or suggestions are welcome.
At this point, i'm not interested in FI.
Le Mans Master
Joined: Apr 2006
Posts: 5,933
Likes: 13
From: The Beautiful Inland Empire WA.
With the M6 you could go as deep as the 4.11's and still have decent RPM's on the highway......you are going to lose a couple of MPG's though, but the first two or three gears will more than make up for that...If you want to go more moderate, try the 3.73's........they are going to cost you about $2,000 with the rebuilt diff, hardened output shafts and install. If you do this consider ONLY RPM brand trans and diffs....
Safety Car
Joined: Aug 2006
Posts: 4,347
Likes: 25
From: Apache Junction AZ
In other words, with say a 3.73 then 6th gear is more like 5th, 5th is more like 4th, etc. So the higher the rear end number the lower for all the gears in the trans.
Also conceder the overall drive ratio as the real key. Multiply the rear end ratio times the particular trans gear ratio your using and you will get the overall drive ratio as long as you are using the same size tire. If you add tire size into the picture than larger diameter tires will take you in the other direction to a certain degree and vise versa.
BJK
CF Senior Member
Joined: Feb 2006
Posts: 23,313
Likes: 25
From: Tucson Arizona
Even though there's 'more than one way to skin a cat' (PETA no emails please) I suggest you go with 'real' horsepower...improve your engine. Cost notwithstanding, IMO you're better off doing a head/cam package.
The Z51 option was designed for the parking lot autocross enthusiast and possesses the wider ratio transmission gearing which for the sake of illustration I'll equate to a granny gear in a truck. I feel it's less desirable to mate the wide ratio Z51 transmission to even more radical rear end gearing. You'll be 'all gears.'
Even though you don't track your car I still think its best to look to your engine for increased power. I feel you'll be able to run your engine closer to its power peak in more diverse applications with your stock gearing.
The Z51 option was designed for the parking lot autocross enthusiast and possesses the wider ratio transmission gearing which for the sake of illustration I'll equate to a granny gear in a truck. I feel it's less desirable to mate the wide ratio Z51 transmission to even more radical rear end gearing. You'll be 'all gears.'
Even though you don't track your car I still think its best to look to your engine for increased power. I feel you'll be able to run your engine closer to its power peak in more diverse applications with your stock gearing.
Thread Starter
Pro
Joined: May 2006
Posts: 743
Likes: 0
From: Toms River NJ
Even though there's 'more than one way to skin a cat' (PETA no emails please) I suggest you go with 'real' horsepower...improve your engine. Cost notwithstanding, IMO you're better off doing a head/cam package.
The Z51 option was designed for the parking lot autocross enthusiast and possesses the wider ratio transmission gearing which for the sake of illustration I'll equate to a granny gear in a truck. I feel it's less desirable to mate the wide ratio Z51 transmission to even more radical rear end gearing. You'll be 'all gears.'
Even though you don't track your car I still think its best to look to your engine for increased power. I feel you'll be able to run your engine closer to its power peak in more diverse applications with your stock gearing.
The Z51 option was designed for the parking lot autocross enthusiast and possesses the wider ratio transmission gearing which for the sake of illustration I'll equate to a granny gear in a truck. I feel it's less desirable to mate the wide ratio Z51 transmission to even more radical rear end gearing. You'll be 'all gears.'
Even though you don't track your car I still think its best to look to your engine for increased power. I feel you'll be able to run your engine closer to its power peak in more diverse applications with your stock gearing.
Drifting
Joined: Jul 2008
Posts: 1,576
Likes: 1
From: Webster Groves (St. Louis) MO
Even though there's 'more than one way to skin a cat' (PETA no emails please) I suggest you go with 'real' horsepower...improve your engine. Cost notwithstanding, IMO you're better off doing a head/cam package.
The Z51 option was designed for the parking lot autocross enthusiast and possesses the wider ratio transmission gearing which for the sake of illustration I'll equate to a granny gear in a truck. I feel it's less desirable to mate the wide ratio Z51 transmission to even more radical rear end gearing. You'll be 'all gears.'
Even though you don't track your car I still think its best to look to your engine for increased power. I feel you'll be able to run your engine closer to its power peak in more diverse applications with your stock gearing.
The Z51 option was designed for the parking lot autocross enthusiast and possesses the wider ratio transmission gearing which for the sake of illustration I'll equate to a granny gear in a truck. I feel it's less desirable to mate the wide ratio Z51 transmission to even more radical rear end gearing. You'll be 'all gears.'
Even though you don't track your car I still think its best to look to your engine for increased power. I feel you'll be able to run your engine closer to its power peak in more diverse applications with your stock gearing.
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