Join Date: Sep 2001
Location: Elizabethtown, PA
My guess would be that your speedo is off, and when it says you're going 60, you're probably going closer to 75, and 3800 RPM's at 75 MPH is pretty close with 3.55's.
Your car probably came with 4.11's, and when someone swapped them out for 3.55's, they never changed the speedo gears inside the transmission, giving you false speedo readings.
Watch out for cops until you get the speedo corrected. At 3,000 RPM's, you're probably going about 67 MPH.