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silversvs 06-09-2010 07:40 PM

Gearing question
 
I got the '59 all put back together and running. She runs like a top but my gearing is way to high. I have a sbc 350, Muncie M21 4 speed and Ford 8.8 posi with 3:73 gears. I'm winding the motor up too high even at 55mph. I want to keep the 4 speed so I'm looking to drop the rear gearing. The lowest I found so far is 3:08s. Anyone have a way to calculate how much of a difference the gearing combination would make? I'd like to only make this change one time. Anyone know if there is something lower for the 8.8 like a 2:70 or 2:92? And anyone point to a retailer with good pricing? Summit only has 3:08s at about $170 a set.

Thanks!

LEEVON 06-09-2010 08:12 PM

Re: Gearing question
 
I think 3.08's will do the trick depending on your tire size. Try this calculator:

http://www.ringpinion.com/Calc_RPM.aspx

And your gears:

http://www.ringpinion.com/PartsList....ID=28&CatID=10


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