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02-01-2004, 06:46 PM | #1 |
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Gears - to answer the questions once and for all
this has all the gear ratios for every ford tranny (except for the 2004 mustang one... not gonna comment on that)
http://www.vibratesoftware.com/html_...sions_Main.htm site w/ correct ratios: http://www.supercarsite.net/mustang_mach_1.htm this is a speed/gear/rpm calculator: http://www.allfordmustangs.com/Detailed/608.shtml EDIT: Updated using .62 gear ratio, my bad to save you all the trouble: 80mph at gear ratio: 3.55 = 2304 3.73 = 2421 4.10 = 2661 4.30 = 2791 4.56 = 2960 top speed w/ 3.55s, 5th gear @ 6798rpm (closest w/o going over 6800) = 236mph (obviously none of us will ever see anything close to this speed, so complaining about 'losing' top speed by going w/ a higher gear is pointless) top speed w/ 3.73s, 5th gear @ 6780 = 224mph top speed w/ 4.10s, 5th gear @ 6787 = 204mph top speed w/ 4.30s, 5th gear @ 6769 = 194mph top speed w/ 4.56s, 5th gear @ 6771 = 183mph anyway, point is, doubt anyone is gonna 'lose' top speed... at least this was the main worry w/ 96-98 gt's :p (god it feels good now that I can rag on em :p) EDIT: I guess I should update this thread with another calculation since this seems more appropriate now for my garage queen mach... 4th gear for manuals/3rd for autos (1:1), trap speeds at 6100rpm (stock engine peak) 6500 rpm (minor bolt-ons shift point), 6800 rpm (psr/cobra cams shift point) HTML Code:
26" tire: Gear 6100rpm 6500rpm 6800rpm 3.55: 133 141.7 148.2 3.73: 126.5 134.8 141.1 3.90: 121 129 134.9 4.10: 115.1 122.7 128.3 4.30: 109.8 117 122.4 4.56: 103.5 110.3 115.4 28" tire: Gear 6100rpm 6500rpm 6800rpm 3.55: 143.2 152.6 159.6 3.73: 136.3 145.2 151.9 3.90: 130.3 138.9 145.3 4.10: 124 132.1 138.2 4.30: 118.2 126 131.8 4.56: 111.5 118.8 124.3 4.88: 104.2 111 116.1
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2013 gt - TBD 2004 mach1 - 12.31@110.17, 1.645 60' - SOLD Last edited by Fosters; 09-20-2013 at 03:18 PM. |
02-01-2004, 06:56 PM | #2 |
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Thanks for the numbers. I just installed 4.30s and love them. I did not cal my speedo yet so I was wondering about my rpm. I guessed right that 80mph is turning 3K rpm. I can live with that.
Jerome
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03 Mach1 5spd BB/Stroker built by Eddie Rios Addiction Motorsports P&P 03 Heads by Al P Custom cams by NASVT Nazty PSR SAE 420rwhp SAE 387rwt 1.56 60ft 11.44ET 122.1mph 1700 DA |
02-01-2004, 07:05 PM | #3 |
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Did you use a .62 for 5th for our cars? The first 3650's in Cobra's had a .67. The older 5 speed T45's had a .67. The earlier 5 speed 3550's had .68 (except for the .8 RR versions). Sorry to question this if you did.
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Ralph Greene SOLD 03 Mach 1 (Torch Red) 5 Speed Manual Real Ford FR 500 18X9 Wheels 255X40X18 Michelin Tires Steeda Sport Springs (isolators in) Tokico HP Struts/Shocks Steeda 4 bolt CC Plates Poly Offset Steering Rack Bushings Steeda TriAx Shifter Magnaflow X/Cats Bassani Catback with Removable Baffles |
02-01-2004, 07:15 PM | #4 | |
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Quote:
looked them up on yahoo... thanks!
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2013 gt - TBD 2004 mach1 - 12.31@110.17, 1.645 60' - SOLD Last edited by Fosters; 02-01-2004 at 07:29 PM. |
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02-01-2004, 07:18 PM | #5 |
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Where's the love for 3.73's?!?!?!?
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Aluminator NA bottom end, rebuilt stock heads, Vortech V2, 3.90 gear, 514 RWHP, 468 RWTQ. Motor and tune by JPC. (Millersville, MD) |
02-01-2004, 07:31 PM | #6 | |
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Quote:
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2013 gt - TBD 2004 mach1 - 12.31@110.17, 1.645 60' - SOLD |
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02-01-2004, 07:44 PM | #7 |
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We have .62 5th. Yes you are correct. At cruising we turn fewer RPM's with 4.30's, than previous 5 speed cars with 4.10's. From .67 to .62 is a 7.5% difference. From 4.10 to 4.30 is only a 5% difference.
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Ralph Greene SOLD 03 Mach 1 (Torch Red) 5 Speed Manual Real Ford FR 500 18X9 Wheels 255X40X18 Michelin Tires Steeda Sport Springs (isolators in) Tokico HP Struts/Shocks Steeda 4 bolt CC Plates Poly Offset Steering Rack Bushings Steeda TriAx Shifter Magnaflow X/Cats Bassani Catback with Removable Baffles |
02-01-2004, 09:56 PM | #8 |
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Wooohoooo. Makes me feel even better about chosing the 4.30s. Thanks for the added info Ralph.
P.S. Ralph, your sig is getting pretty long there Jerome
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03 Mach1 5spd BB/Stroker built by Eddie Rios Addiction Motorsports P&P 03 Heads by Al P Custom cams by NASVT Nazty PSR SAE 420rwhp SAE 387rwt 1.56 60ft 11.44ET 122.1mph 1700 DA |
02-01-2004, 10:27 PM | #9 |
Mach1,the legend lives on
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Thanks for the info Fosters , i have been wondering if i would be regretting the 4:10's i bought in case the wife and i would take a highway trip in the 100 mile range which we do sometimes. The car is a weekend driver. Feel good about e'm now.
Ralph when you going to add a set of gears to that list?
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02-01-2004, 10:49 PM | #10 |
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Ralph when you going to add a set of gears to that list? [/B][/QUOTE]
I'm not doing gears to this car. I changed rear gears 7 times on my 98 Cobra...and wound up with 4.10's. But it saw some track duty with over 500 RWHP on 15" BFG DR's. If doing again, that car would have stayed with 3.73's (which it had twice). Gears didn't really matter, car was traction limited. I'm not drag racing this car, and think the stock 3.55's are almost perfect for all around use...with our 5 speeds (I might would prefer 3.73's for my use). If I had a 6 speed like was in the 2000R (2.97 first gear), (even if .62 6th same as our .62 5th) , I would like a little lower gear. Maybe a 3.90 or something for all around use. Our Mach's make their power about 10% lower in the RPM range than previous 4V's, so 3.55's or 3.73's on our car feels about like 4.10's on previous 4V's, and you shifted them at higher RPM. I'm not running race tires on this car, and no one has shown me gears make a car any faster for the way I drive this car, for my use. And even if they do make you a couple tenths faster on stock tires, that is not measureable for street use. And I like saving 5th for strictly highway cruising. I also like lazy 70-75 MPH cruising at a little over 2000. So stock 3.55's work for me. If I were to get interested in drag racing this car with stock 5 speed, I would just jump to 4.30's, or maybe 4.56's, with a little taller than stock tire. Whatever tire/gear combo it takes to max out 4th at end of 1/4. But I will let you guys do all that stuff this time.
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Ralph Greene SOLD 03 Mach 1 (Torch Red) 5 Speed Manual Real Ford FR 500 18X9 Wheels 255X40X18 Michelin Tires Steeda Sport Springs (isolators in) Tokico HP Struts/Shocks Steeda 4 bolt CC Plates Poly Offset Steering Rack Bushings Steeda TriAx Shifter Magnaflow X/Cats Bassani Catback with Removable Baffles |
08-14-2004, 03:44 AM | #11 |
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"Whatever tire/gear combo it takes to max out 4th at the end of 1/4."
What a wise and sage statement... |
08-15-2004, 04:13 PM | #12 | |
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Quote:
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01-14-2005, 05:16 PM | #13 | |
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Re: Gears - to answer the questions once and for all
Quote:
For much more serious drag racing with sticky tires (BFG DR's or better) on race wheels, I would run 4.30's, and learn to launch off or near the rev limiter. But purchase race wheels. This is the hot ticket, if you wish to make your car into a race oriented car. You must get your 60' in the 1.5-1.6 area. It's all about 60' times, more so than HP. This kind of abuse requires some serious mods to drivetrain. For cars not set up to race at the strip (been lowered etc), but where you just want a little more mechanical advantage for street acceleration, then run 3.73's, 3.90's, or 4.10's, depending on your tires and how much 4th gear speed you wish to give up, and how many extra RPM's you're willing to put up with while cruising. But these gears require an extra shift at the strip VS 3.55's, offsetting some of their advantage. Forget what top speed could be in 5th. If you have to shift to 5th in any kind of encounter, it's all over with our extremely tall .62 5th. 5th just for cruising. We really just have a 4 speed car (manuals) plus tall overdrive.
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Ralph Greene SOLD 03 Mach 1 (Torch Red) 5 Speed Manual Real Ford FR 500 18X9 Wheels 255X40X18 Michelin Tires Steeda Sport Springs (isolators in) Tokico HP Struts/Shocks Steeda 4 bolt CC Plates Poly Offset Steering Rack Bushings Steeda TriAx Shifter Magnaflow X/Cats Bassani Catback with Removable Baffles Last edited by Ralph Greene; 01-15-2005 at 11:45 AM. |
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01-26-2005, 05:23 PM | #14 | |
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Re: Gears - to answer the questions once and for all
Quote:
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02-11-2005, 10:13 AM | #15 |
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Re: Gears - to answer the questions once and for all
What performance gain would our cars see if adding 4.10 gears in say a 60 roll race on the freeway?
Unfortunately most of my races happen when I am commuting. I know people talk about how strong the LS1 cars are up top, but I have an amazing record against those even past 100 mph races. I don't know if the chip helped in this area that much. I used to have 4.10s in my 97 Cobra, I know it helped when 1/4 dragging but wasn't sure if the affect was as great on 60 punch races. |
02-11-2005, 11:54 AM | #16 |
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Re: Gears - to answer the questions once and for all
There sure is A LOT of extemely valuable information in this thread. Thanks to all who posted their input, whether it be simply mathmatical, or from previous race experience.
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01-15-2012, 07:12 PM | #17 | |
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Re: Gears - to answer the questions once and for all
Quote:
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10-21-2006, 05:19 PM | #18 |
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Re: Gears - to answer the questions once and for all
Not if you are already shifting into 4th with 3.55's, which I am doing and I'm stock.
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10-21-2006, 09:35 PM | #19 | |
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Re: Gears - to answer the questions once and for all
Quote:
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10-22-2006, 12:22 AM | #20 |
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Re: Gears - to answer the questions once and for all
Thanks! I did have the Cat-back though, but close enough
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08-15-2004, 06:00 PM | #21 |
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I read somewhere that Mustangs are top speed limited, so top speed is really irrelevant. 139 or 149 mph, I can't remember which.
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10-11-2007, 11:17 PM | #22 |
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Re: Gears - to answer the questions once and for all
im droping in a viper t-56 in my automatic mach this winter and the gear ratios are as follows.
1st 2.66 2nd 1.78 3rd 1.30 4th 1.00 5th .74 6th .50 i was planning on doing 4.56's.... but that equates to a 3650 with 3.73's roughly. should i go steeper? i think motive sells 4.88'sshould i go with those or the 4.56's?
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10-12-2007, 09:20 AM | #23 | |
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Re: Gears - to answer the questions once and for all
Quote:
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10-12-2007, 10:49 PM | #24 |
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Re: Gears - to answer the questions once and for all
i think redline is 36mph in 1st w/ the 4.56's
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04' Torched 6-speed Build Date: 02/25/2004 Ported Eaton @7psi Viper T-56 Built 8.8,4.10's 441/402 |
08-15-2004, 07:14 PM | #25 |
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No love for 3.73s.
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