RING N PINION SIZE
03-13-2010, 05:44 AM
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DYNO OPERATOR
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Join Date: Apr 2008
Posts: 496
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?
03-13-2010, 05:58 AM
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RACING JUNKIE
Join Date: Sep 2007
Location: orland pk il
Posts: 2,399
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.
03-14-2010, 11:44 AM
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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.
03-15-2010, 07:30 AM
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MASTER BUILDER
Join Date: Sep 2005
Posts: 134
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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