Is there a post for gear upgrades? | SuperMotors.net Forums

Member since Aug 2016
2 posts
lowell, MA, USA

Aug 24, 2016 at 4:50 PM

Im sure this has been asked! Going to upgrade my gears to 3.55 or 3.73 on my 05 marquis and wanted to see if there was a post on basic info about it! On what is needed or what l should and not should do!Thanks in advance

jdmeaux

Member since Jan 2009
525 posts
Lafayette, LA, USA
1 vehicle in the registry

Aug 25, 2016 at 8:00 AM

You may want to look at www.p71.ca or www.crownvic.net for info of that magnitude. Going to 3.55 gears will not require a tune, but anything higher will.

Best of luck.

*******************
PROUD MEMBER of www.crownvic.net

It's just a SUPER-DUTY Mustang GT Sedan. 198K miles and still rolling HARD.

1997 Crown Victoria P71 SVT *** ex-US Marshall service (the CAR)
STOCK?? I bet it was modified.

13.26 @ 107.24 MPH 1/4 mi w/ me, tools, & full tank of 93 octane

I added CAI, NICHE 19 X 8.5 " wheels with 245/45ZR 19 rubbers, and completely rebuilt the front end with poly bushings, Kooks headers, 2 1/4inch exhaust, TCI 2200-2400 rpm Stall converter

.PLANS:: engine upgrade, 5.4L 2v stroker, rebuild interior in leather w/ buckets, thinking about turbos