Thread: gear ratio
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Old 10-03-2002, 06:12 AM   #2
Jeff Chambers
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Join Date: Aug 2000
Location: Milan, OH
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I'm not sure about Project Stocker, but they run a taller tire on the car so they probably have a pretty tall gear in it maybe a 4.88 or 5.13 with the 29" tall tire.

Most of the Street Warrior cars were running either a 4.30 or 4.56 gear this year. I ran a 4.56 because I switched to carburetor and was shifting first at about 7200. I started out with a 4.30 but just couldn't get the engine up into the RPM range it needed to be happy. I switched to the 4.56 and picked up two-tenths on the first pass down track. I would like to try a 4.88 sometime but I think it would be too much. From my calculations a 4.70 would be just about perfect.

With the rule changes in store for next year (aluminum heads, long tubes, 26x10" tire, etc.) I'm going to have to go back to the drawing board to see what will work best, but it will probably still be in the 4.56 range to keep from killing the top end MPH.
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Jeff Chambers
1990 Mustang GT 10.032 Seconds / 137.5 MPH
14-time Street Warrior World Record Setter
CRT Performance
2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH
2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2

"There's nothing boring about a small block automatic shifting gears at 9400 rpm!"
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