Quote:
Originally Posted by tyronasauras
My 2 cents, just change the rear end gear first. Your PI v8 has plenty of power for the city for an ecomodder. Stick with a taller tire, the beast needs lots of rubber on the road.
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It's actually a NPI motor. Mustangs got the PI in 99, and the Panthers received it in 01.
I have 2.73s in my Grand Marquis and love it. I don't need off the line acceleration, because I already know it's a slow boat. You want to keep it slow for the mileage.
I've been cranking out 24 mpg combined in my 03 Town Car. That;s pretty f'n awesome, considering it weighes 4500 lbs. (PI motor, Steeda underdrives, and 3.08 RAR)
I'm eventually going to throw in a 5 speed manual. Probably in a year or two.
I'd do rear gears first. Don't forget to cahnge out your VSS so the speedometer reads correct.
# of teeth Color Part Number Stock RAR (ref. only)
16 Blue D0AZ-17271-A 2.73
17 Green C7SZ-17271-A 2.73, 3.08
18 Gray C7SZ-17271-C
19 Tan C7VY-17271-A 3.08
20 Orange C8SZ-17271-B 3.27, 3.55
21 Purple D0OZ-17271-B 3.27
-ryan s.