What you are describing as a "faint" gear howl is probably nothing to worry about. What you might do is have the shop pull the cover and look at the wear pattern. This would quickly tell you if it was a correct install or not....That aside, there is a lot of difference between a 2.73 and a 3.73 ratio, and you are bound to have "some" built in gear noise with the different ratio....It just has to be. Regardless of who says not, its a fact... And then there is the fact of weather your vehicle is a Premium model or base model...The base model have quite a bit less sound deadening in them and this will just excentuate the different ratio gear noise....Like I said if its only a "faint' noise, get it looked at, but quit worrying about you are just hearing something your not used to, from the get go...........best regards Plum
I just had a set of FRPP 3.73 installed this morning with a mini install kit (no bearings) due to low mileage (1100). No abnormal noises. Sounds exactly like it did with the 2.73. Butt dyno feels a huge improvement, as expected.
2014 DIB Premium 3.7L MT82 Pony Package
MPT 91 Tune, BBK Chrome Longtubes, BBK Offroad X pipe, 14" Vibrant Resonators, Airaid CAI, Shelby Short Throw Shifter, 3.73 FRPP