Need gear suggestion for my kenne bell cobra

[rizjan67]

Hello MACA,,,Well i have an 04 kenne bell cobra with 4.10 gears which was good when the car was under 500rwhp but now car have 623rwhp and 4.10s are getting on my nerves I mean its just too much gear for me I have to shift every time I hit the gas,
So I am thinking about going to 3:31 or stock 3:55s ,just want to know what gear ratio would be good with 600+horsepower.Any suggestions would be appreciated.

 

[04yellowcobra]

What kind of mph are planning on going out the back door with? That will determine the gear and tire size.

 

[04yellowcobra]

Quarter Mile ET/Gear Calculator By Wallace Racing

 

[PSUCOBRA96]

3.27 or 3.55 should be the right gear for you to still have punch and not be shifting all the time.

 

[rizjan67]

What kind of mph are planning on going out the back door with? That will determine the gear and tire size.

Honestly I m not really worrying about track times more likely for street and not a lot but some often I go to track.

 

[GT500RedStripe]

Make sure you lock in a rear tire diameter. I started with 3.73 on my 26.3" tires. Then I went to 28.8 tires and needed to go to 4.10's. Now I have M&H tires (and man do they hook!) and at 28.0 inches, I am trapping at redline and might need to change again. I will want to go to the track and try it a few more times. Better ET might bring my speed down and 4.10's could be right.

 

[HURTNEM]

Are you planning on running bigs/littles or even a 28" tire on the street? If so, I believe the 28" tire will make 4.10s perform like 3.55s, so that'll change your shifting to like factory. Also, if you're going to go with 26" tires (normal/stock height) then 3.55s would be good and if you put a 28" tire on with those it'll make the 3.55s perform like 3.27s, so you'll have longer time in between shifts and less TQ to worry about taking off from a dig.

When I increase my power if the stock gears are too much I'm personally going with 3.27s, but I'll try a 28" tall tire 1st to see how I like it before I switch gears.