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View Full Version : 3.73s from 3rd gen to 4th

epikz
12-15-2008, 10:33 AM
i have a set of 3.73's for a 3rd gen, would they work in a 4th gen rear end?
79 Z28
12-15-2008, 01:44 PM
yes, as long as it is a 7.5 10 bolt and not the 9 bolt
89vert
12-15-2008, 04:36 PM
and the 4th gen has 3.23 or higher gears in it now
epikz
12-18-2008, 10:42 PM
any suggestions where to get the gears installed? i got quoted $550 with bearings ect at i.w.e
that sound reasonable?
ReEntry Racer
12-18-2008, 11:01 PM
any suggestions where to get the gears installed? i got quoted $550 with bearings ect at i.w.e
that sound reasonable?

I think it does if that includes a good set of gears.
79 Z28
12-19-2008, 09:16 AM
knowing IWE id say no, they are a ram...
epikz
12-21-2008, 10:48 PM
that price is with me supplying gears..
89vert
12-21-2008, 10:50 PM
diff in car or you giving them the diff?

they'd probably change them in car anyway, but it'd be easier out of car
epikz
12-22-2008, 02:02 AM
the diff is in the car, anyone know somone that will do it for less i was thinking around 300+
TRANSAMMAN 99
03-01-2009, 12:34 PM
I.W.E. installed my 373's in my TRU-TRAC 6 years ago.....$250...550 sounds a little high.
epikz
03-02-2009, 02:01 AM
i called and thats the price i was given... 400 for the install 90 for the rebuild kit plus tax
nitrous
04-07-2009, 08:52 AM
What about using Billys Mustang... as far as i know they do work on more than just mustangs and by the looks of it they would be a bit cheaper and i'd bet they'd do a good job

http://www.vancouvermustangs.com/forums/showthread.php?t=55851
99ls1car
04-06-2010, 09:15 PM
and the 4th gen has 3.23 or higher gears in it now

4th gens from 2000-02 came with 3.23s anything before can be 2.73 or 3.23 with the performance pkg.

GU2 on the rpo code is a 2.73
GU5 is 3.23
99ls1car
04-06-2010, 09:15 PM
just realized im resurrecting a year old thread doesnt anyone post on these fuckin forums anymore?
90_383
04-06-2010, 09:16 PM
this thread is 364 days old
jordan_88
04-06-2010, 10:41 PM
IWE qouted me $800 to swap my 4.56 gears for 3.73 and its a 4th gen TA rear end. and they will not install customer suppplied gears.. rear end in the car...
epikz
04-06-2010, 11:50 PM
ouch, go to berts there cheaper and they use customer supplied gears.
Dunout
04-07-2010, 02:10 AM
im in the market for the same gears but in a 4th gen rear as well.
epikz
04-07-2010, 10:30 AM
jordan how much for the 4.56's?