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Topic: top speed in 4th gear with 3.73's?
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Jaejae5.0
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Member # 7958
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posted
i was always curious becuase my speedo doesnt work..lol..im on 17 inch wheels with 245/40 up front and 275/40 in the back..stock t5..i usually cut the race after i get near 5800 in 4th how fast would i be going?
-------------------- 1987 notchback h/c/i 302 & 70mm turbo SOLD
2000 camaro ss cam only
Posts: 4890 | From: the combustion chamber | Registered: Oct 2007
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djlopez916
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Member # 8787
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posted
2mph
-------------------- 89 GT VERT work in progress 05 v6 stang 97 Ford expedition
Posts: 827 | From: South Sac | Registered: Dec 2008
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stangin'
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Member # 514
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posted
too fast if you're not at the track .
Posts: 2993 | From: Bay Area | Registered: Oct 2001
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Jaejae5.0
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Member # 7958
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posted
quote: Originally posted by stangin': too fast if you're not at the track .
how fast is too fast?
Posts: 4890 | From: the combustion chamber | Registered: Oct 2007
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Ty
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Member # 4920
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posted
go onto norcal1320.com, they got a good calculator for all that stuff
-------------------- DRIVE FAST TAKE CHANCES ---------------------------- 90 gt nothin special, just your average bolt ons...OUT TO PASTURE 69 fastback project car
Posts: 1400 | From: vallejo | Registered: Oct 2004
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Ty
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Member # 4920
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posted
heres the link actually http://www.norcal1320.com/calculators.html
-------------------- DRIVE FAST TAKE CHANCES ---------------------------- 90 gt nothin special, just your average bolt ons...OUT TO PASTURE 69 fastback project car
Posts: 1400 | From: vallejo | Registered: Oct 2004
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sic70stang
CAFords OG
Member # 4347
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posted
I would get about 115 on a 26 tire around 5600rpm at the track
-------------------- The anti-crew 1987 rolling safety violation.
Posts: 6943 | From: California | Registered: Jul 2005
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8stang8
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Member # 8082
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posted
quote: Originally posted by Ty: heres the link actually http://www.norcal1320.com/calculators.html
WOW... if that calculator is true i cant wait till the next grudge.
-------------------- Fox body coupe: 347, TKO, 3.73s, 9.93 @ 143
Posts: 1279 | From: s.f. | Registered: Dec 2007
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blkfoxbody89
5.O
Member # 8361
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posted
Damn, if that thing is right I should have just about cracked my block at 507 Fwhp. if my car weighs 3350 and went 118mph ..
-------------------- '89 gt '90 gt
Posts: 976 | From: sacramento | Registered: Apr 2008
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87TURBO
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Member # 9257
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posted
about 122/125
-------------------- turbo people
Posts: 403 | From: modesto/sanjose | Registered: Jun 2009
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jawsgear
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Member # 8080
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posted
The RPM to MPH Calculator is correct, I dont know about the others as I did not check. I compared it to ours at http://www.jawsgear.com/calc_rpm.html for confirmation.
Jeff
-------------------- Jaw's Gear & Axle 916-922-5297 Parts & Service Gears, Posi's, Lockers, Spools, & Axles Custom Housings & Axle Shafts
Posts: 91 | From: Sacramento, California | Registered: Dec 2007
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MikeD.
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Member # 8060
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posted
Anyone know that 5th gear ratio on a stock Ford T-5?
-------------------- 1999 FRC Vette 12.77 @ 110
Posts: 2854 | From: Vacaville Ca, 707 | Registered: Nov 2007
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SteveL
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Member # 1241
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posted
Those MPH/RPM calculators are not very realistic for calculating top speed. They might come close when the car is on a dyno with no loading. Wind resistance at high speeds would keep actual speed somewhat less than those calculators estimate. [ August 21, 2009, 11:57 AM: Message edited by: SteveL ]
Posts: 578 | From: San Jose, CA | Registered: May 2002
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