10-09-2003, 07:32 AM
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CC Member
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Join Date: Jun 2000
Location: Warrenton,
VA
Cobra Make, Engine: FFR2229K, Vortech-blown 306 (446rwhp, 442 rwtq)
Posts: 236
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Not Ranked
Quote:
Originally posted by REDSC400
One tip, I am running 305-50-15 tires on the rear of ERA375. The program tends to not work as well with the wide tires. So I found that if I chose 205-50-15 then the results were just dandy.
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Tire width has nothing to do w/ final drive ratio. Only tire HEIGHT. If you're really using the calcs for a 205/50 tire, then the numbers are wrong. There's about 4" difference in height between a 205/50 and 305/50 on 15" rims.
Quote:
Originally posted by Anthony
From a dead stop, both will accelerate about the same, by seat of the pants feeling. Only while cruising in 4th, with just stepping on it, you may notice a little slower pick-up.
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Both would be exactly the SAME in 4th, since they both have 1:1 ratios in that gear.
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Wade Chamberlain
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