RING N PINION SIZE

Old 03-13-2010, 06:44 AM
  #1  
JEFF69Z28
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Default RING N PINION SIZE

THINKING ABOUT BACKHALFING MY CAR WHAT SIZE RING N PINION WOULD I NEED TO GET 4.56 GEAR RATIO WHEN USEING 32X14X15 WHEELS?
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Old 03-13-2010, 06:58 AM
  #2  
MEMRACING62
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if your backhalfing I would go with ford 9 in. tire size & gear ratio are two separate things, you need to choose the combinationof the two to achive the the desired rpm best for your set up.
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Old 03-14-2010, 12:44 PM
  #3  
JEFF69Z28
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RIGHT NOW IM GOING THRU THE TRAP AT 7-7100 RPM,WOULD LIKE TO KEEP IT THAT WAY.9 INCH , DANA 60 OR MOSER M9 WHICH ONE IS LIGHTER.
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Old 03-15-2010, 08:30 AM
  #4  
wmeabates
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Old tire rollout divided by new tire rollout=x.Old gear ratio divided x= new gear ratio.Old tire 90 divided by new tire 102=.88 4.56 divided by .88 =5.18.Put your numbers in.Bill.
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