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410 gears

M

M.A. CRISSIS

Guest
408 gears

can anyone tell me how much topend i would loose with theses gaers (408)
 
M

M.A. CRISSIS

Guest
410 gears (sorry)

i meant 410 gear set not 408 sorry not thinking , hay great advise in this site, what does anyone think about 410,s -how much top end speed will i loose , i have a 6 speed my corvette.
 

vms4evr

Well-known member
Joined
Jul 18, 2001
Messages
466
Location
Durham, NC
Corvette
2002 Flat Black Z06
With your 6sp cars the 4.10 gears will be fine. Because you have a 6sp and the ratio is so wide you can cover the gear change. 1st gear will go by really quick... But your 6th gear has such long legs that the car will still easily get up past 150mph.

Use the gear calculator tool in the Tools section of this site. Or go to Richmond or one of the other gear vendors sites. They have calculators for this.

With a 3.54 gear in my auto trans and running in OD I could still get to 150mph. OD ratio is 0.7. My 275/40-17 tires have a diameter of 25.7".

The formula looks as follows:

RPM = (((RE Ratio * MPH) / Tire Diameter) * 336) * OD Ratio

5346 = (((3.54 * 165) / 25.7) * 336) * 0.7

ie, @ 5,346rpm i can go 165mph

you should easily make that with a 6sp...

Graham
 
Joined
Jun 20, 2002
Messages
2,509
Location
Tallahassee, FL
Corvette
none right now :(
I have heard that 4.09's will make the car's top speed go from 5th gear to 6th gear (the stock 6 speed top end is in 5th)... However, I haven't done the math... It gets complex here... It comes down to how well your car can run in 6th gear.... basically what needs to be factored in are: how much HP your car has(and at what RPM... how much HP do you have at High RPM?) the weight of your car, the drag coefficient, the final drive ratio, tire size.... What you are trying to find out is if the car has enough horsepower to move itself in 6th gear at high speed... if it can't, you have to figure it out for 5th gear
 

BigRed

Well-known member
Joined
May 23, 2001
Messages
948
Location
Edmonton
Corvette
1985 Bright Red Rocket
Thing Id worry about is your speedometer Bro (Ecklers has a 200 computer dohickey to fix it)
 

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