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Picking a good gear ratio?

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Old Aug 11, 2008 | 08:04 PM
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Default Picking a good gear ratio?
I have a 94 LT1 6-speed car with heads cam and sray, I had a stock 10 bolt and broke it. I found a sweet deal on a moser 12 bolt. It had a set of 4:56 gears in it. My problem is threw a 1/4 mile im running out of gear and having to shift into 5th gear. Any suggestions on a good ratio would be great.
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Old Aug 11, 2008 | 08:18 PM
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What is your trap speed and maximum RPM?
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Old Aug 11, 2008 | 09:14 PM
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4.10s or 3.73
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Old Aug 12, 2008 | 04:30 AM
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Quick fix, By a taller tire. Problem solved.

I run 4.30's in my 9" and run 26.5" tall tires at the track I trap at 6500 RPM's in 4th.
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Old Aug 12, 2008 | 09:22 AM
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4.10's would be perfect. I'm also about to ditch my 4.56's (same deal as you, they came with the rear) in favor of 4.30's.
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Old Aug 12, 2008 | 10:14 AM
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pick a tire first, then the gear based on your mph
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Old Aug 12, 2008 | 11:13 AM
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^^^^Agreed, don't go about it backwards. Figure out tire combo and then buy a gear.

Jeff
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Old Aug 13, 2008 | 07:35 PM
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I am currently running a 26" DR, but will probably buy new 26.5" DR. Im turning around 6400rpm and falling probably 450- 500 ft. of the line in fourth. What do you guys think? Jaws if you carry anything for a moser 12 bolt i would be interested.
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depends how high you are revving, stock cam or bigger cam? there is a calculator.. and if you know what speed you are trapping at use the calculator and see how tall a tire ure gonna run, etc.. and what ure 5th gear is... probably .74, but IDK about LT1 T56s...
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