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ok thanks. So, when my speedo says I'm going 65 I'm really going 66.3 mph? How about in when I'm at the end of 3rd gear and the speedo says 91. I'm actually going 93-95 or so?
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Stock circumference: 79.95"
New circumference: 82.24"
Difference: 2.864%
91 * (1-.02864) = 88.3 mph.
[ March 07, 2005, 02:56 AM: Message edited by: 98Camaro3.8 ]Matt
1998 Mystic Teal Camaro M5
Whisper Lid, Pacesetter Headers, Catco Cat, Dynomax Super Turbo, B&M Shifter, BMR STB, LSD, P&P Intakes, GT2 Cam, Comp OE Lifters, 1.7 Roller Rockers, Pushrods, SSM Heads, DHP PowrTuner.Comment
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Like Matt said, other way around. Reads 65 actually going 63.7.2001 Firebird 3.8L V6 M5,<br />It once had....<br />NX Nitrous Wet Kit, ZZP X-P Hot Cam, <br />3.42 LSD, Pacesetter Headers, <br />36# Injectors, HP Tuners<br />322 RWHP, 379 RWTQ<br />13.596 @ 102.56 w/100 shotComment
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