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2000 firehawk 6spd rpms at 70

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Old 06-04-2011, 02:57 PM
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Default 2000 firehawk 6spd rpms at 70
i got a 2000 firehawk with a 6speed i bought it used i do about 1200 rpms at 70 in 6th gear anyone have any idea what gears i have?
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Old 06-04-2011, 03:02 PM
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sounds like 273s
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Old 06-04-2011, 03:13 PM
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what kind of rpms would i be at with 373's and 410's
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Old 06-04-2011, 03:48 PM
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Definitely not right for a stock 3.42 M6 car. Maybe gears/rear was changed and PCM wasn't reprogramed? Visit www.f-body.org/gears/ and plug in different ratios. Plugging in 2.73 is 67 MPH - I'd pull the cover and see what's in there.
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Old 06-04-2011, 04:09 PM
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well the speedo is off i use gps the speedo marks 55 when u go 70
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Old 06-04-2011, 04:33 PM
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Don't go by the speedo then, what RPM are you at going 70 with the GPS?
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Old 06-04-2011, 07:21 PM
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I've got 3.73's in the rear and I run right at 1750 at 70 mph
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Old 06-05-2011, 08:49 AM
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my 3.42s make engine turn 1600 at 70.
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Old 06-05-2011, 08:53 AM
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http://www.f-body.org/gears/

Put in the gears and tells the rpms

6th gear 1200 rpm 67 mph
6th gear 1300 rpm 73 mph with 2.73s sounds like they swapped the rear-end.
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Old 06-05-2011, 11:04 PM
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You asked about 4.10's. at 72 mph im running just about 1900 rpm
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Old 06-07-2011, 10:54 AM
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Swapped gears, may not be turned for it.
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