I must agree, a turtle could beat these cars off the line. My f. injected ones do get a consistant 25 mpg. Also your axle ratio is correct. -----Original Message----- From: Dick Benjamin <dickb@xxxxxxxxx> Sent: Feb 3, 2004 8:03 PM To: mailing-list@xxxxxxxxxxxxxxxx Subject: IML: '81 rear axle ratio? 2.23 - this with lock-up 904. Makes for 25 MPG trip mileage. No grunt off the line, however. Dick Benjamin ----- Original Message ----- From: "Mike Pittinaro" <mechimike@xxxxxxxxx> The 80's Imperials used a 2.41 > ratio (I believe, someone correct me if I'm wrong) and > had only a 318 engine. They also got ~25 mpg on the > highway. \