changing gears need opinions and estiments please!

[lilredstang97]

allright guys here is what im doing. i have a 8.8 with 2.73 gears im swaping out to 3.73 and replacing all bearings and seals every thing will be new except the housing. i was wanting to know what are your opionions about this, have any of you done this, what was the loss of gas milage, and what rpm did you run at on the high way (60-80mph) thanx for posting in advance.

 

[red95r]

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[ivan12]

Cost for gear swap is around $400-$600 by a reputable shop, don't know how much more it'll be to swap out the rest. I have 3:73s on my 5 speed and freeway RPMs at 65 are around 22-2300

 

[OnyxCobra]

yeah 3.73s at 75mph are gonna be about 2600rpm, my 3.55s push 2400 or so.

 

[Win]

Didn't see any Loss in mileage but maybe 1 MPG from my 3.08 to a 3.73 but i do all city driving.

Total for everything should be $650-$700 and that is with every part you need.

Mine consisted of

FRPP 3.73 Ring and Pinion
FRPP Carbon Disc
FRPP Rebuild Kit
Valvoline 75w90 Full Syn
Fric Modifier

Labor Total was $250

That included install Ring and Pinion and Rebuild the Trac Lok

 

[lilredstang97]

i have allready bought all of the parts that are needed last year when i had my 97 gt now i have a 94 that the parts will work in i was just worried about the mpg and how high the highway rpms would be.
the cool thing about this whole sitution is that i have kinda made friends with a ford master tech that is going to help me with the swap for 250$ so im geting off cheap on the labor and he is going to teach me how to do this so if im not happy with the set up i can change the gears myself the next time around.

 

[Win]

Ok well sorry i saw Estimate and thought $$$....


Then as long as he is helping you rebuild the trac lok then. GET ER DONE!!!

 

[Raffaelli]

I went from 2.73s to 4.10s. (auto tho)

300 in parts all ford
45 minutes to do the job (new axle bearings, trac-loc pack, R/P install, everything)

Gas mileage is the same, all city.
Power difference is unreal, feels like its 1,000 lbs lighter.

But instead of 2K rpm at 70, its nearly 3K.