LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

A4+3.73's=?RPM

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Old Apr 4, 2004 | 04:56 PM
  #1  
"White Knight"'s Avatar
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From: Michigan
A4+3.73's=?RPM

What RPM are you guys with A4's with 3.73's running at 75mph?

Just wondering if 3.73's are too much RPM. Basically this car is for racing but when i drive on the freeway i don't want to be pulling 3 grand all day....harder on the motor.
Old Apr 4, 2004 | 05:47 PM
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about 2800 rpm at 75 with 3.73s.
Old Apr 4, 2004 | 06:32 PM
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http://www.f-body.org/gears/
Old Apr 4, 2004 | 08:57 PM
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cruising along at about 3000 rpm im guessing im around 80-85 mph. speedo isnt recalibrated yet so im not sure. I did bury the speedo because of that though
I pegged it at 155 which would really be about 115-120. it was cool.

I actually think around town fuel mileage would be unchanged or better with this. the converter locks in at a lower rpm (between 35-40 mph, my guess.) I practically coasted up a hill going 1400 rpm in high gear at 45.
Old Apr 5, 2004 | 01:35 AM
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From: Christiansburg, VA
60mph is 2400 in OD
80mph is 3000 in OD
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