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Author
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Topic: 3.73s VS 2.73s how much different?
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KCmustangboy
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Member # 1927
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What kind of 1/4 mile time change can I see here? I have 2.73s I am running a 2.35 60ft and ET at 14.58@ 95.8 With the 3.73s how much change should I see? Thanks for the help guys.
Casey
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03 Cobra... Factory long block, with Whipple and AED tune... 812rwhp 10.0s @ 140... almost there!
WWW.AEDHP.COM
Posts: 1691 | From: San Jose, CA | Registered: Oct 2002
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street_illegal_stang
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Member # 1554
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posted
at least 3-5 tenths
everyone is gonna say its probably the best mod you can do is gears ![[burnout]](graemlins/burnout.gif)
Posts: 1276 | From: Long Beach C.A | Registered: Jul 2002
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PeNiNsula302
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Member # 1061
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night and day, it really wakes up the car, i love my 3:73's ![[Eek!]](eek.gif) ... As for the times, well as far as i know its goot for like 3-5 tenths, but im not sure on that one. It all comes down to the driver, how many runs have you had with your 2:73's? With some sticky tires, pullies, and gears you can pull some serious 60 ft's and break into the 13's...
Posts: 3423 | Registered: Mar 2002
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street_illegal_stang
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Member # 1554
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right on ...that was cool..we both though of the same thing at the same time ![[Big Grin]](biggrin.gif)
Posts: 1276 | From: Long Beach C.A | Registered: Jul 2002
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PeNiNsula302
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Member # 1061
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quote:
Originally posted by street_illegal_stang:
right on ...that was cool..we both though of the same thing at the same time
great minds think a like, hehehe
Posts: 3423 | Registered: Mar 2002
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KCmustangboy
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Member # 1927
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posted
Well I have headers and X pipe and Pullies. My 60fts aren't great but its tough with 17s and 2.73s. But I know I need to get better as a driver. Still I know I have room for at least one tenth in my 60ft now. Are the gears really worth 5 tenths?? that is amazing to me lol I am in a vert Gt and its not the quickest but I am having fun getting there.
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03 Cobra... Factory long block, with Whipple and AED tune... 812rwhp 10.0s @ 140... almost there!
WWW.AEDHP.COM
Posts: 1691 | From: San Jose, CA | Registered: Oct 2002
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MRBiggs
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Member # 513
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You sure your t-lok doesn't need to be rebuilt ? I run 17s at the drags and I used to pull 2.2 - 2.3x 60 fts because I had the dreaded "one wheel peel" going on... ![[Frown]](frown.gif)
After I got it fixed and had the 3.73s put in and learned how to launch the car again... 2.0x were the norm.
These days I'm seeing 1.95s on the average almost every run.
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342 stroker, Windsor Sr. heads, Jay cam, TFS track heat
www.socalhorsepower.com
Posts: 300 | From: San Dimas, So. Cali GO LAKERS !! | Registered: Oct 2001
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Stimson
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Member # 51
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posted
quote:
Originally posted by KCmustangboy:
What kind of 1/4 mile time change can I see here? I have 2.73s I am running a 2.35 60ft and ET at 14.58@ 95.8 With the 3.73s how much change should I see? Thanks for the help guys.
Casey
3.73's and a set of drag racing tires will put you into the 13's
Posts: 2373 | Registered: Jun 2000
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andyman_2k01
CAFords OG
Member # 1448
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posted
i had 3.27's and put in the 3.73's and it was a huge difference. you will definetly notice a difference not only in performance but in E/T's too. i highly suggest the gear change.
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-00 Mustang GT (R Clone)
-99 Saleen Convert. #231-SOLD
Posts: 1503 | From: Bay Area, CA | Registered: Jun 2002
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street_illegal_stang
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Member # 1554
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posted
maybe you should gets some flow bastard mufflers dumped of course and bump up your timing to like 15 degrees and get a 70 mm mass air meter to go with those pullies and maybe some better tires too. ![[patriot]](graemlins/patriot.gif)
a 5.0 shouldn't run 14's...with all do respect,thats kinda weak-no it is weak ![[Roll Eyes]](rolleyes.gif) . work on your lanches..stock i would hold the rpm's to like 1700 and kinda ride the clutch so you don't break traction
1st run it up to 5400-37mph
2nd 5200-62mph
3rd 4900-85mph
4th 5150-115mph
oh these numbers where on my car(3:08) peg legged
manage to run low 13's on comp ta's zr rated
but it really shouldn't make to much differnce
"2:73-3:08" ![[Razz]](tongue.gif)
you did read my post right?
[ February 26, 2003, 01:33 AM: Message edited by: street_illegal_stang ]
Posts: 1276 | From: Long Beach C.A | Registered: Jul 2002
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91 5.0
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Member # 1527
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posted
quote:
Originally posted by st5150:
quote:
Originally posted by KCmustangboy:
What kind of 1/4 mile time change can I see here? I have 2.73s I am running a 2.35 60ft and ET at 14.58@ 95.8 With the 3.73s how much change should I see? Thanks for the help guys.
Casey
3.73's and a set of drag racing tires will put you into the 13's
13's with a 95.8 trap? That takes one hell of a driver, slicks and a hard ass launch.
[ February 25, 2003, 07:25 AM: Message edited by: 91 5.0 ]
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02 GT - Zinc Yellow
91 5.0 LX - Red
Posts: 1316 | From: Fairfield | Registered: Jul 2002
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DropTopFox
drama
Member # 1689
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posted
3.73's are nice but 4.10's would probably work even better since you really don't have too much on that car. If you plan on doing a lot more than 3.73's is probably a good idea and you'll notice a world of difference. Bump that timing up and get some stickies on it, and make sure your not doing any one leggers if so get that t-lock fixed then you should be in 13's easy. I love my 4.10's and you can see my list of mods, very similar. DOn't have any times with all these mods but I can tell you it helped out a whole shit load.
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Go out and do something for yourself today everyone, quit depending on others
-Me
http://www.CaliforniaFords.com/cgi-bin/album.pl?album=00001689
Posts: 4003 | From: San Bruno | Registered: Aug 2002
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chosen1
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Member # 1906
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posted
I have a set of 4.10's for sale...
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1967 Fastback. Should go 10's -but doesn't
1993 Cobra
2003 Suzuki SVS
1966 Coupe -For Sale
Posts: 2205 | Registered: Sep 2002
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Stimson
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Member # 51
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posted
quote:
Originally posted by 91 5.0:
13's with a 95.8 trap? That takes one hell of a driver, slicks and a hard ass launch.
He should be running 98 mph when he goes from 2.73's to 3.73's..... and 5.OBrian ran 13.9@96 mph with his stock 5.O on street tires
Posts: 2373 | Registered: Jun 2000
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KCmustangboy
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Member # 1927
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posted
So I am getting a lot of comments and thanks for the advice everyone. I am farely new at this. I am going with the 3.73s for sure. Another question, I am always traping about 95.8 or 95.7 at the lowest. Will my trap speed be the same with the 3.73s if not how much higher? Also When I lauch I just go from 900rpm or 1000 and try and not brake traction but I find myself either letting the clutch out to fast and spinning the tires or I lug the motor down real hard to like 400 rpm then it pulls from there. Should I try adding more rpms or what? thanks for the advice everyone.
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03 Cobra... Factory long block, with Whipple and AED tune... 812rwhp 10.0s @ 140... almost there!
WWW.AEDHP.COM
Posts: 1691 | From: San Jose, CA | Registered: Oct 2002
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PeNiNsula302
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Member # 1061
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posted
quote:
Originally posted by KCmustangboy:
[QB]Should I try adding more rpms or what?QB]
Hell yeah you should, add 4k rpm's and get some e.t. streets!! hehehe
[ February 25, 2003, 11:38 PM: Message edited by: PeNiNsula302 ]
Posts: 3423 | Registered: Mar 2002
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KCmustangboy
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Member # 1927
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posted
lol why didn't I think of that! ok so really now how to get going on street tires?
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03 Cobra... Factory long block, with Whipple and AED tune... 812rwhp 10.0s @ 140... almost there!
WWW.AEDHP.COM
Posts: 1691 | From: San Jose, CA | Registered: Oct 2002
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street_illegal_stang
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Member # 1554
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posted
quote:
Originally posted by street_illegal_stang:
maybe you should gets some flow bastard mufflers dumped of course and bump up your timing to like 15 degrees and get a 70 mm mass air meter to go with those pullies and maybe some better tires too.
a 5.0 shouldn't run 14's...with all do respect,thats kinda weak-no it is weak . work on your lanches..stock i would hold the rpm's to like 1700 and kinda ride the clutch so you don't break traction
1st run it up to 5400rpm-37mph
2nd 5200rpm-62mph
3rd 4900rpm-85mph
4th 5150rpm-115mph
oh these numbers where on my car(3:08) peg legged
manage to run low 13's on comp ta's zr rated
but it really shouldn't make to much differnce
"2:73-3:08"
you did read my post right?
[ February 26, 2003, 01:37 AM: Message edited by: street_illegal_stang ]
Posts: 1276 | From: Long Beach C.A | Registered: Jul 2002
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KCmustangboy
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Member # 1927
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posted
Yes I read the post thanks for the advice. only problem is feathering my Spec clutch with 2.73s is not easy, I either lug out the motor or break traction. Also when I hit the traps I am in 3rd gear at 4700rpms and 95 to 96 mph. So no need to use 4th. I am gettting the 3.73s this week and I guess I am going to rearend specialists unless someone else can do it. cough cough drew cough
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03 Cobra... Factory long block, with Whipple and AED tune... 812rwhp 10.0s @ 140... almost there!
WWW.AEDHP.COM
Posts: 1691 | From: San Jose, CA | Registered: Oct 2002
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Elapid
GOROBGO
Member # 50
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posted
for the best ET/MPH, if you have to shift to 4th before the stripe, shift before you enter the traps so you are accelerating all the way thru the last 66 ft.
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98 Cobra
83 Notch rolling chassis - fs
Posts: 1797 | From: Grass Valley, CA USA | Registered: Jul 2000
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166 Merlo
FELONY
MOTORSPORTS
Member # 1549
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posted
I just ordered my 3.73's a couple days ago and I already love them.
They get here tomorrow ![[Smile]](smile.gif)
Should be in tomorrow too.
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'89 - Boss Coupe
'70 - Drop Cutthang
'68 - Cougnut
'87 - 0166, Its real
Posts: 3954 | From: Thebay | Registered: Jul 2002
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rokcrln
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Member # 2536
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posted
[ March 04, 2003, 05:00 AM: Message edited by: rokcrln ]
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71 Bronco stock (for now) w/59k miles.
73 Bronco EFI 351W
71 Chevy PU w/Vett LT1
Posts: 448 | From: Winters Ca. | Registered: Mar 2003
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rokcrln
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Member # 2536
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posted
Also I have not checked the diff cover yet but as far as gears my 91GT is good for
1st 40mph
2nd 83mph
3rd 110mph
4th and 5th no idea untill the tires are replaced and car is aligned so what does it sound like I have stufed in their for gears? 2.73/3.08?
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71 Bronco stock (for now) w/59k miles.
73 Bronco EFI 351W
71 Chevy PU w/Vett LT1
Posts: 448 | From: Winters Ca. | Registered: Mar 2003
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KCmustangboy
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Member # 1927
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posted
sounds like the same as me, 2.73s They are killers on the track, no get up and go. 3.73s will be in next week I am hoping!
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03 Cobra... Factory long block, with Whipple and AED tune... 812rwhp 10.0s @ 140... almost there!
WWW.AEDHP.COM
Posts: 1691 | From: San Jose, CA | Registered: Oct 2002
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KCmustangboy
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Member # 1927
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posted
3.73s are going in right now see you all next wednesday...I expect to be all over the place with no traction so look out!
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03 Cobra... Factory long block, with Whipple and AED tune... 812rwhp 10.0s @ 140... almost there!
WWW.AEDHP.COM
Posts: 1691 | From: San Jose, CA | Registered: Oct 2002
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