top speed in gears help
I am trying to debate between 4.11 and 4.56 gears. Can someone tell me what the top speed would be in each gear (M6), at say 6800rpms? Thanks
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Re: top speed in gears help
Roughly 130 mph with 4.11 and 115 mph with 4.56, with a tire radius of 13".
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Re: top speed in gears help
What gear is that in?
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Re: top speed in gears help
ive been at 150mph in 5th at a tad over 6krpms. I think top speed would be 160ish unless you want to rev it to 7k.
With 4.56s you may reach top speed in 6th if you have enough power. |
Re: top speed in gears help
I was going by 5th gear ratio of 1, 6th will get you higher.
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Re: top speed in gears help
With 4.11's in 5th gear you should reach 171mph-4.56's should get you to 156.
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Re: top speed in gears help
Originally Posted by MyShibbyZ28
I was going by 5th gear ratio of 1, 6th will get you higher.
With 4.11's, at 6,800RPM, the theoretical speed is: 5th - 170 6th - 252 With 4.56's, at 6,800RPM, the theoretical speed is: 5th - 153 6th - 227 Whether you can reach those speeds depends on how mugh HP you are putting down. Its not likely you could get anywhere near 200mph without huge HP. |
Re: top speed in gears help
Assuming stock sized 245/50R16 tires and stock M6 tranny ratios (these are the ratios of my '02 Z... most LT1's are the same, but I think 93's had a different first gear ratio).
4.11:1 rear end @ 6800 rpm: 1 - 47mph 2 - 70 3 - 97 4 - 126 5 - 170 6 - 252 4.56:1 rear end @ 6800 rpm: 1 - 42 2 - 63 3 - 87 4 - 113 5 - 153 6 - 227 That is, of course, assuming you have the power to reach 6800rpm in each of those gears, which is extremely unlikely. |
Re: top speed in gears help
Bah! Fred beat me by three minutes. I was more thorough though!
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Re: top speed in gears help
Originally Posted by JakeRobb
Bah! Fred beat me by three minutes. I was more thorough though!
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Re: top speed in gears help
Hey thats exactly what I was looking for, I think I will go with the 4.56s. They should turn good times at the track with the 383, LE ported trickflows and intake, and the HEALTHY bauer cam. Plus the CSR Waterpump etc.
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Re: top speed in gears help
Just in case this is a street car, you may be interested to know that the 4.56 setup will have you at about 1800rpm at 60mph. In general, your RPM will be 33% higher than it was with stock 3.42's.
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Re: top speed in gears help
I didn't know 4th was 1:1, shows how much I know about manuals...:(
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Re: top speed in gears help
Originally Posted by MyShibbyZ28
I didn't know 4th was 1:1, shows how much I know about manuals...:(
:D |
Re: top speed in gears help
Originally Posted by 97WS6NY
Hey thats exactly what I was looking for, I think I will go with the 4.56s. They should turn good times at the track with the 383, LE ported trickflows and intake, and the HEALTHY bauer cam. Plus the CSR Waterpump etc.
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