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LinkBack (10) | Thread Tools |
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#41 |
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Hardcore Enthusiast
2001 Mustang SVT Cobra
Join Date: Apr 2007
Location: Riverview, FL
Posts: 2,751
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I have my 4th top out at 117mph, not recommended, but doable. Raised limiter and now with the cams and springs.... OMG, I see it coming.
Excellent write up, I will most likely look into swapping my 4.10 for 3.73... Getting up to 6800-7000 too fast and can't imagine when I start spraying again, which will be tomorrow.
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Slow, really slow Cobra. Wanna see?![]() MM Cobra Club Member #81 "TAMPA BAY AREA CREW"
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#42 |
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Hardcore Enthusiast
2002 Chevrolet Impala
???
Join Date: Jul 2007
Location: Fort Collins, Colorado
Posts: 2,242
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#43 |
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Regular
03 gt vert
lights cant time it
Join Date: Sep 2007
Location: Lincoln NE
Posts: 296
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good to know someone did this first i started on it yesterday and got frustrated and quit thank u ur the man NERD FTW
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NX EFI plate 250 jetcustom tune Eibach Pro-Kit Magnaflow cat back high flow cats, 3:55s, ported and polished heads, comp cams, forged pistons/ rods Curently building up 03 mach block w stage 3 port job. look for twins and more n2o |
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#44 |
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Regular
Y2K GT
13.3@103
Join Date: Mar 2007
Location: Ada Oklahoma
Posts: 380
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Hey could you do it for a set of 3.55s with a t-45
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Studies show that 92% of kids listen to rap. If you are one of the 8% who still listens to real music put this in your signature. |
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#45 |
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Enthusiast
Join Date: Sep 2007
Location: Woodland Hills, CA
Posts: 682
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Thanks for doing all those calcs. That's good information. I'm curious where 3.55s fall into it as well. I'll pay the 5 bucks...
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2004 Mustang GT The difference between a girlfriend and wife is about 50 pounds. |
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#46 |
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MM Fanatic
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I have a stock 99 GT and at 80mph in 5th I'm at 2400 rpm. According to the chart I should be about 300 rpm lower. Is there something wrong with my car?
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#47 |
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MM Fanatic
Join Date: Feb 2007
Location: Vineland, NJ
Posts: 3,583
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no
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![]() Jesus Christ is #1 "The Founder Of Crews"
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#48 |
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Enthusiast
Join Date: Sep 2007
Location: Woodland Hills, CA
Posts: 682
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Tire and rim size may not be identical to what was used for the calculation. Different tire manufacturers sizes are not always identical. And then there is the speedo calibration issue. So, there are a few variables.
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2004 Mustang GT The difference between a girlfriend and wife is about 50 pounds. |
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#50 |
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Regular
Join Date: May 2007
Posts: 342
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#51 |
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Hardcore Enthusiast
2002 Chevrolet Impala
???
Join Date: Jul 2007
Location: Fort Collins, Colorado
Posts: 2,242
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#52 |
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Hardcore Enthusiast
2002 Chevrolet Impala
???
Join Date: Jul 2007
Location: Fort Collins, Colorado
Posts: 2,242
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If anyone has any special requests, just PM me your tanny, gears you want, and your tire size.
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#53 |
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Enthusiast
Join Date: Dec 2008
Posts: 705
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I hate to bring up a really old thread but this info is useful and can provide insight to those deciding between gears.
On a side note I have seen a little over 4400rpm in 5th gear in my car. Does that mean I was traveling above 150 considering 5th gear at 4000rpm should be 150mph? |
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#54 |
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I Post Entirely Way Too Much
2003 Mustang GT
1/8 - 8.09 @ 91.39mph 1/4 - 12.35 @ 114.52mph
Join Date: Sep 2009
Location: Weymouth, MA
Posts: 12,058
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Great write up man. Im gonna rep u
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![]() 2003 Mustang GT Vortech V1 Intercooled SAE Corrected - 380rwhp & 380rwtq @ 9psi Uncorrected - 401rwhp & 400rwtq @ 9psi Tuned By: Pete @ Performance Dyno Affordable Supercharger Build Guide Supercharger Info for Noobs |
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#55 |
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I Post Entirely Way Too Much
2003 Mustang GT
1/8 - 8.09 @ 91.39mph 1/4 - 12.35 @ 114.52mph
Join Date: Sep 2009
Location: Weymouth, MA
Posts: 12,058
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Oh wow this thread is from aug of 2007...my bad
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![]() 2003 Mustang GT Vortech V1 Intercooled SAE Corrected - 380rwhp & 380rwtq @ 9psi Uncorrected - 401rwhp & 400rwtq @ 9psi Tuned By: Pete @ Performance Dyno Affordable Supercharger Build Guide Supercharger Info for Noobs |
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#56 |
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Enthusiast
Join Date: Dec 2008
Posts: 705
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Yeah I know it is old but such good info.
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#57 |
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Hardcore Enthusiast
Join Date: May 2008
Location: Houston, TX
Posts: 2,153
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This is such and old thread.. Suck for you though... there was a calculator in 2007... PaladinMicro
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Super Slow 2011 Grabber blue V6...
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#58 |
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MM Fanatic
2000 Mustang GT
12.73@111.36
Join Date: Aug 2007
Location: Shelbyville, IN
Posts: 4,732
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It's hard to do fifth gear comparisons. 4:10s with a T-3650 transmission show almost the same rpms in fifth at any given speed as 3.73s with a T-45 transmission. The T-3650 has a fifth gear ratio of .62:1. The T-45's is .67:1. I think four in an auto is the same as a T-45s fifth.
Edit: My 2000 GT at 75 mph is running 2530 rpms. (T-45 with 3.73s). A 2002 GT with 4.10s will be running at 2570 rpms. At 60 mph there is only a 30 rpm difference. My 2000 GT is slightly lower than 2000 rpms. The 2002 GT is slightly above. It's so close (1.5% difference) that both would claim to be running 2000 rpms at 60 mph.
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ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage. Last edited by Eagle2000GT; May 13th, 2010 at 09:45 AM. |
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#59 | |
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Regular
1999 Mustang GT
Join Date: Jul 2009
Posts: 124
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From wikipedia TR-3650 used in the 2001-2004 Ford Mustang GT * 1st: 3.380:1 * 2nd: 2.000:1 * 3rd: 1.320:1 * 4th: 1.000:1 * 5th: 0.670:1 (used on 01-04 with 3.27:1 final drive) * 5th: 0.620:1 (used in 03-04 with 3.55:1 final drive, Mach1) * Rev: 3.380:1 |
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#60 |
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MM Fanatic
2000 Mustang GT
12.73@111.36
Join Date: Aug 2007
Location: Shelbyville, IN
Posts: 4,732
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I don't know. CliffyK is a tech guru and he uses .62:1 for his 2003 Mustang GT's T3650 (reference the Paladinmicro link above). I've also compared rpms with guys who have T-3650s and 4.10s. The results were what I wrote. Maybe someone else can shed some light on this.
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ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage. |
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