3.73s vs. 410s for V6

buddyantunez1 · November 21st, 2009, 12:01 PM

im rocking 3.73's in V6 manual V6 right now, im in an 8.8 but its similar. if you want to do it the affordable way, get the differential out of a ranger with a 7.5 and 3.73's already on it. get an install kit and pop it in there. pretty sure its offered on the 4wd models. thats what i did and with a good install, it lasted for years, until i started using nitrous. if you plan on going F/I, go ahead and look for a used 8.8. they can be had pretty cheap if you search.

JTs03v6 · November 21st, 2009, 11:15 PM

Originally Posted by Codeman

ok well maybe i will. i already have the 3.73s brand new with the tlok and bearing kit waiting to be installed in my car. i cant do it till summer it is too cold and i dont have a heated garage, so maybe i will just sell the 3.73s and buy the 4.10s not sure yet. i would love the 4.10s but it is just i drive 225 miles highway a week.

3/4 a tank per week with the 373's. look to burn an additional 1/8th with the 4.10's.

Codeman · November 22nd, 2009, 05:09 PM

well it is only two more years that I will have to drive that much highway until im out of college. And by then I will want to put a detroit trutrac in and 4.10s. I mean I got these babies cheap and they will work for what I want now, I know I am spending extra on buying them later, but it is just easier.

justang1999 · November 24th, 2009, 09:19 AM

i getting ready to buy 3.73's myself, do you half to buy the t-lok or is just something that you can do later

01VBmustang · November 24th, 2009, 11:22 AM

Do it at the same time.
Unless you want to pay $300 twice for the installation.

99redstang · November 24th, 2009, 11:46 AM

ok so here is what i get out of this
3.73 + auto = good for mpg. bad for racing
4.10 + auto good for racing. very bad mpg

any info and corections would be thankfull

goren813 · November 24th, 2009, 01:15 PM

As a few of the more informed members have said, the mpg downgrade isn't as drastic as some lead to believe. With a proper install and everything else in working order, you shouldn't lose THAT much gas efficiency. In an auto go with 4.10's.

Ticket-Me-Yellow · November 24th, 2009, 01:31 PM

but make sure you also get a t-ock too. I reccommend the detroit true trac. I had a ford racing one in the but i blew it up with just bolt ons.

goren813 · November 24th, 2009, 01:39 PM

^Agreed.

Codeman · November 24th, 2009, 01:54 PM

^ah crap, oh well if i blow mine out, stuff breaks. It is too late i already bought it and didnt have enough money to buy the tru trac. and one more question. Am i supposed to use the friction modifier with the new t lok? and how do i break in the gears? because i was looking at mine last night and they said to make sure to break in but did not tell how.

99 BLUE V6 · November 27th, 2009, 07:43 AM

is it possable to do a 4.30 or do you need to go 8.8 for that. and from what i have read it's pretty much mandantory you use a sct so tranny shifts properly with gear set.does anyone have input on that.

JTs03v6 · November 27th, 2009, 04:57 PM

Originally Posted by 99 BLUE V6

is it possable to do a 4.30 or do you need to go 8.8 for that. and from what i have read it's pretty much mandantory you use a sct so tranny shifts properly with gear set.does anyone have input on that.

Unfortunatlley so. Thats one of the downsides to staying with the 7.5. 4.30 would be nice if offered in 7.5

lcorriveau3 · November 29th, 2009, 08:07 PM

I have been running 3.73 for a couple of years now. I have the manual trans. I would like to try 4.10 but wonder about the low first gearing in tranny, would have to shift from 1st pretty quick.. I am guessing on this though.

austintylerr · November 29th, 2009, 09:56 PM

Originally Posted by buddyantunez1

im rocking 3.73's in V6 manual V6 right now, im in an 8.8 but its similar. if you want to do it the affordable way, get the differential out of a ranger with a 7.5 and 3.73's already on it. get an install kit and pop it in there. pretty sure its offered on the 4wd models. thats what i did and with a good install, it lasted for years, until i started using nitrous. if you plan on going F/I, go ahead and look for a used 8.8. they can be had pretty cheap if you search.

What year ranger does the 7.5 with the 3.73's in it come on?

bb0029 · November 30th, 2009, 03:36 PM

Originally Posted by austintylerr

What year ranger does the 7.5 with the 3.73's in it come on?

This might help you out some.

9986paulk · December 1st, 2009, 06:14 PM

To break the gears in I just took it easy on them for the first 400 miles. And everything's fine. And the guy that installed mine said to do a bunch of tight figure 8s in a parking lot as soon as you get everything installed to get oil on all of the friction plates. Because if you read the paper with the t-lock it ays to take it apart and soak all of the friction plates in oil before installing. But my a guy that works on GM cars said their differentials are the same and all they do are the figure 8s.

Codeman · December 1st, 2009, 07:14 PM

Ok thanks. That sounds easy enough.

November 21st, 2009, 12:01 PM	#21
buddyantunez1 November 08 ROTM 2000 3.8L Mustang 195.9/220.8 hp/tq N/A Join Date: Sep 2008 Location: Cleveland MS/Stafford VA Posts: 1,370 iTrader: 0 reviews	im rocking 3.73's in V6 manual V6 right now, im in an 8.8 but its similar. if you want to do it the affordable way, get the differential out of a ranger with a 7.5 and 3.73's already on it. get an install kit and pop it in there. pretty sure its offered on the 4wd models. thats what i did and with a good install, it lasted for years, until i started using nitrous. if you plan on going F/I, go ahead and look for a used 8.8. they can be had pretty cheap if you search. __________________ ~Nitrous is like a Hot Girl with STD's, you know you wanna hit it, but your afraid of the consequences~

November 22nd, 2009, 05:09 PM	#23
Codeman Hardcore Enthusiast Join Date: Nov 2007 Location: North Dakota Posts: 2,933 iTrader: 1 reviews	well it is only two more years that I will have to drive that much highway until im out of college. And by then I will want to put a detroit trutrac in and 4.10s. I mean I got these babies cheap and they will work for what I want now, I know I am spending extra on buying them later, but it is just easier. __________________ UDP, CAI, True Duals, LTs, 91 Tune from TT, 3.73 gears, Tlok,Windstar upper, GT TB, Ported lower, Comp 218/226 cam, FRPP C Springs, J&M LCA, Tokico Blue shocks and struts, and J&M Full Length Subframe Connectors

November 24th, 2009, 09:19 AM	#24
justang1999 Regular 2001 Mustang GT DUNNO Join Date: Nov 2009 Location: kingsport, TN Posts: 77 iTrader: 0 reviews	3.73's i getting ready to buy 3.73's myself, do you half to buy the t-lok or is just something that you can do later

November 24th, 2009, 11:22 AM	#25
01VBmustang Regular 2001 Mustang Convertible Join Date: Jan 2008 Location: Virginia Beach Posts: 153 iTrader: 0 reviews	Do it at the same time. Unless you want to pay $300 twice for the installation. __________________ BBK CAI. H pipe/dual flows. 4.10s and tlok. window tint. Bullits. SCT Tuner.

November 24th, 2009, 01:15 PM	#27
goren813 MM's Official Lucifer '00 3.8L & '05 4.6L Join Date: Apr 2008 Location: Odessa, FL Posts: 3,620 iTrader: 0 reviews	As a few of the more informed members have said, the mpg downgrade isn't as drastic as some lead to believe. With a proper install and everything else in working order, you shouldn't lose THAT much gas efficiency. In an auto go with 4.10's. __________________ "Fast she goes...in the city of Overdose"

November 24th, 2009, 11:46 AM	#26
99redstang Regular 99 v6 Join Date: Nov 2009 Posts: 381 iTrader: 0 reviews	ok so here is what i get out of this 3.73 + auto = good for mpg. bad for racing 4.10 + auto good for racing. very bad mpg any info and corections would be thankfull

November 24th, 2009, 01:31 PM	#28
Ticket-Me-Yellow Hardcore Enthusiast 2001 Mustang V6 14.89@93 mph Join Date: Nov 2006 Location: Hawthorn Woods, IL Posts: 1,187 iTrader: 3 reviews	but make sure you also get a t-ock too. I reccommend the detroit true trac. I had a ford racing one in the but i blew it up with just bolt ons. __________________ Selling Mustang So Im Selling All M112 Parts

November 24th, 2009, 01:39 PM	#29
goren813 MM's Official Lucifer '00 3.8L & '05 4.6L Join Date: Apr 2008 Location: Odessa, FL Posts: 3,620 iTrader: 0 reviews	^Agreed. __________________ "Fast she goes...in the city of Overdose"

November 24th, 2009, 01:54 PM	#30
Codeman Hardcore Enthusiast Join Date: Nov 2007 Location: North Dakota Posts: 2,933 iTrader: 1 reviews	^ah crap, oh well if i blow mine out, stuff breaks. It is too late i already bought it and didnt have enough money to buy the tru trac. and one more question. Am i supposed to use the friction modifier with the new t lok? and how do i break in the gears? because i was looking at mine last night and they said to make sure to break in but did not tell how. __________________ UDP, CAI, True Duals, LTs, 91 Tune from TT, 3.73 gears, Tlok,Windstar upper, GT TB, Ported lower, Comp 218/226 cam, FRPP C Springs, J&M LCA, Tokico Blue shocks and struts, and J&M Full Length Subframe Connectors

November 27th, 2009, 07:43 AM	#31
99 BLUE V6 Premium Member 99 V6 BASE NEVER RACED THIS ONE Join Date: Nov 2009 Location: PALM BEACH FLORIDA Posts: 1,377 iTrader: 1 reviews	is it possable to do a 4.30 or do you need to go 8.8 for that. and from what i have read it's pretty much mandantory you use a sct so tranny shifts properly with gear set.does anyone have input on that. __________________

November 29th, 2009, 08:07 PM	#33
lcorriveau3 Enthusiast 1999 YAWN!!! what?? Join Date: Nov 2009 Location: N'oreast Posts: 692 iTrader: 0 reviews	I have been running 3.73 for a couple of years now. I have the manual trans. I would like to try 4.10 but wonder about the low first gearing in tranny, would have to shift from 1st pretty quick.. I am guessing on this though.

December 1st, 2009, 06:14 PM	#36
9986paulk Hardcore Enthusiast 1999 Mustang V6 Join Date: Dec 2008 Location: Youngstown Posts: 1,226 iTrader: 3 reviews	To break the gears in I just took it easy on them for the first 400 miles. And everything's fine. And the guy that installed mine said to do a bunch of tight figure 8s in a parking lot as soon as you get everything installed to get oil on all of the friction plates. Because if you read the paper with the t-lock it ays to take it apart and soak all of the friction plates in oil before installing. But my a guy that works on GM cars said their differentials are the same and all they do are the figure 8s.

December 1st, 2009, 07:14 PM	#37
Codeman Hardcore Enthusiast Join Date: Nov 2007 Location: North Dakota Posts: 2,933 iTrader: 1 reviews	Ok thanks. That sounds easy enough. __________________ UDP, CAI, True Duals, LTs, 91 Tune from TT, 3.73 gears, Tlok,Windstar upper, GT TB, Ported lower, Comp 218/226 cam, FRPP C Springs, J&M LCA, Tokico Blue shocks and struts, and J&M Full Length Subframe Connectors

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