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Author
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Topic: 3.73s, a mistake or good decision?
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Corolla S man
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Member # 1650
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posted
 
 
You all are confusing me! I just dropped my 99 GT off at the shop to get 3.73s installed....I read about the same amount of posts saying that 3.73s are no different than stock as I heard that 3.73s really woke up the car.... I hope I didn't make the mistake of getting 3.73s.. I am on the freeway a little, and next year I will be commuting about 20 miles on the freeway each way to college...so I was scared to get 4.10s...I figured I should notice some difference with 3.73s over the stock 3.27s...I'll be happy if my RPM gauge doesn't drop below 2k when I shift, so I will be in the powerband instantly....if I could take a stock 99+ GT by 1 or 2 car lengths with the 3.73s, I'll be satisfied...or when I go to the track tonight, maybe pull a 13.9 instead of my last 14.2 stock.
Posts: 85 | From: Rocklin, CA | Registered: Aug 2002
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JoeT
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Member # 298
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posted
if it were me, I'd be putting 4.10s in a modular stang at a minumum. but you should be happy with the 3.73s nonetheless. ![[patriot]](graemlins/patriot.gif)
Posts: 6785 | From: San Jose | Registered: Jun 2001
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Yellow94GT
Mr. 60 FT
Member # 431
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posted
Anyone who says that 3.73's are no different then stock is full of ![[BS flag]](graemlins/bs_flag.gif) You should be happy with your decision. But like shade tre said, 4.10's aren't bad on a mod motor'ed car.
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AED
1994 GT Bucket that will likely never run
1999 SLOLEEN Twin Turbo Coyote
2008 F250 580 RWHP 1129 RWTQ
Posts: 5990 | From: Cameron Park, Ca | Registered: Sep 2001
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Gear Head
JARED
Member # 779
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posted
You will be happy with your 3.73's, dont second guess yourself. Just think you now have decent gears for forced induction and thats exactly what mod motors need to go fast.
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Support our troops!
Posts: 5685 | From: EASTBAY | Registered: Jan 2002
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BlackNGold
CaliforniaFords.com
Moderator
Member # 655
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posted
3.73's are perfect for 2 valves. They dont rev like 4v Cobra's,where 4.10's are better. Dont forget to buy a speedo calibration box so you dont put too many miles on your car!good luck on your 13.90's
Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001
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mike22ca
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Member # 1675
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posted
3.73 is an excellent choice for your car....you should really get a t-lock to while your at it. It'd save you money if you did then both at the same time. I have a v6 and I have 4.10's, and they are cool too.
Mike
Posts: 303 | From: Sacramento, CA | Registered: Aug 2002
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Shortee
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Member # 1926
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posted
Gt's come stock w/ traction lock.
[ November 13, 2002, 03:18 PM: Message edited by: Shortee ]
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~* Heather *~
"Chaos, panic, disorder.... my work here is done!"
Posts: 285 | From: California | Registered: Oct 2002
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cobraman_1994
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Member # 467
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posted
anything is better then the weak shit that came from the factory
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86 GT
Posts: 4882 | From: eldorado hills | Registered: Sep 2001
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Drew B
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Member # 698
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posted
you will notice a night & day difference with 373.
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AKA.GR40coupe
Posts: 1992 | From: Nor-cal | Registered: Jan 2002
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Hungry Hippo
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Member # 537
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posted
well? you tell us
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05 S4 Avant(wagon)
09 C6 H/C/I
Posts: 2959 | From: east bay | Registered: Nov 2001
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FireWhore
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Member # 781
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posted
3:73s are the best mod out there! other than forced induction or nos ![[Wink]](wink.gif)
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Mods: SLP Cold Air, 85MM Maf, 1LE Inatke Elbow, Custom Muffler, OBD1 CPU
AIM: FireChickenLS1
Posts: 1310 | From: Livermore,CA | Registered: Jan 2002
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Midnight5.0
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Member # 597
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posted
What about for 5.0 foxes? Is there a difference between putting 3.73's or 4.10's on a 5.0 vs. a 4.6, or does the engine size even matter? It seems like 4.10s are popular with the new stangs, but everyone with 5.0's has 3.73's....?
Posts: 551 | From: 925 | Registered: Dec 2001
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PeNiNsula302
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Member # 1061
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posted
I think 4:10's with 5.0's just tend to suck on the gas more than th 4.6's at freeway speeds. and also the powerband on the modular motors just needs a greater ratio to really get movin..although im not sure on that, but i do know this much though, my 3:73's kick ass to me ![[Smile]](smile.gif)
Posts: 3423 | Registered: Mar 2002
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Corolla S man
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Member # 1650
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posted
Well, after getting the gears installed yesterday... I went to the track that night and had no idea how to launch my car with the gears.. I started out with a 16.1 run, then a 15.1 run, then my last run was a 14.2 @ 99 which is the same time I got without the 3.73s... So, I guess I need to get more familiar with my gears and go out again once I know how to launch better. It was very difficult to get traction even with my NT555s. Well, more updates later on.
Posts: 85 | From: Rocklin, CA | Registered: Aug 2002
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Gear Head
JARED
Member # 779
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posted
Midnight 5.0- Mod motors bog alot so they need more gear to get there cars in there power band so they can get down the track. Five liter motors have alot more torque so they dont need as much gear to get them going. Thats how I ahve always thought about it.
99GT- You raced on them that night ![[Eek!]](eek.gif) ? Damn how many miles did you put on them before you did that and how many heat cycles of heat up and cool down did you do?
Anyways you are just going to have to practice on your times man, it just takes practice you have a high 13 sec car there. Good luck!
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Support our troops!
Posts: 5685 | From: EASTBAY | Registered: Jan 2002
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Corolla S man
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Member # 1650
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posted
I put about 50 miles on them before I raced... I did 2 trial runs with about 30 minutes inbetween each run and one actual race that was about 45 minutes inbetween the last run. Do you think I messed up my gears by doing this?? I didn't dump the clutch at all and my time was only a 14.2 so I doubt I really pushed them that hard or I would have a better time.
Posts: 85 | From: Rocklin, CA | Registered: Aug 2002
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Gear Head
JARED
Member # 779
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posted
You should be fine when I got my gears installed I raced hard that night as well but I was street racing. You just have to do a lot of heat cycles to temper teh gears its not really the milage issue. You should be fine.
Practice with those gears and make sure to spina little coming out of the hole so you dont bog that motor of yours. Thsoe egarts should take off like half a sec.
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Support our troops!
Posts: 5685 | From: EASTBAY | Registered: Jan 2002
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griffined
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Member # 1330
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posted
Back when I had a high mileage '82 GT, things kept wearing out and breaking, and I bought a lot of Ford Racing Parts. When the original 7.?" rear end went South, I bought an 8.8" Traction Lok one with 3.73's. I thought it made a big difference, but I forget whether the '82 stock ratio was 3.08 or 3.27
That car also got a '84 GT's 5.0 and T5 before I sold it.
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2001 Cobra Vert #678 of 3384
269 SAE rwhp 279 Tq stock
2000 Cobra R #154 of 300
395 SAE rwhp 398 Tq
1986 Mustang SVO daily driver
Posts: 207 | From: Daytona Beach, FL | Registered: May 2002
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yesIdid
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Member # 58
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posted
You made a good choice...
Move on with your modding. Gears are only one part of the package .
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SOLD :(
Black 99 GT w/the 35th Anniversary package
BOUGHT :)
2015 Mustang GT premium w/PP
Posts: 514 | From: San Franpsycho | Registered: Oct 2000
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BATTMAN
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Member # 2063
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posted
You'll be happy with the 3.73's. I personally would have gone with the 4.10's for a mod motor. You made a good decision though.
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3.73 gears,pro 5.0 shifter, hotchkin lca's, 4in hood,75mm MAS, 3core radiator, 1.7rr, cold air kit, 65mm tb, ported e7's, pullies, short belt, long tubes, h-pipe, dynomax exhaust, 95gt 17in rims, 275/40 in back, 245/45 in front
Posts: 45 | From: ANTIOCH | Registered: Nov 2002
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