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Old 05-16-2011, 04:41 PM   #1
racer913
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Default first gear ratio change

434 small block 3300 lb car 411 gears 30inch tall tire 5200 stall. changing from 189 first gear in PG to 180 straight cut gear set any ideas of what et will change?
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Old 05-16-2011, 11:01 PM   #2
Terry Cain
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Default Re: first gear ratio change

I believe I'd run more gear, say a 513 or so. What's it turning at the MPH lights?
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Old 05-17-2011, 01:57 AM   #3
greg fulk
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Default Re: first gear ratio change

It should slow the car....but not much
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Old 05-17-2011, 02:44 PM   #4
racer913
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Default Re: first gear ratio change

traps at 6000 rpm @ 127 mph its a bracket car
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Old 05-17-2011, 06:06 PM   #5
Mike Taylor 3601
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Default Re: first gear ratio change

Not a automatic guy,but I say same to few hundreds quicker,only thing I see that could help would be straight cut planetary may use a little less power than helical gear.
Strength will be biggest gain.IMO
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