99 vert gears.

flynfink · 06-17-2008, 08:00 AM

Several years back I swapped the stock gears (3.27) in my 99 for a set of 4:30's on many folks recommendations. Well, that was before $5.00/ gallon or higher premium petrol. I want to get the rpm down to a more reasonable level when crusing the highways and back road, which is what the car is used for mostly.

So, what gears go in?

SVTSnak · 06-17-2008, 09:55 PM

That's tough...

I'm looking to switch out the stock gears for a deeper ratio (thinkin' 3.73s), but I hear ya on the gas pricing issue...so I'm curious as to see what responses you get. This will help me out too.

Then again, maybe I best leave the stock ones in until they figure out what they are doing with this gas pricing crap. LOL

nckissfan · 06-17-2008, 10:17 PM

svtsnak, go with 4.10's. That is what I have in mine, and I love them.

SVTSnak · 06-17-2008, 10:31 PM

Those are a bit steep though, aren't they? What's your rpm in 5th gear, at say 65 mph?

That'll give me a reference to what I'm doing now with the stock gears.

nckissfan · 06-17-2008, 10:36 PM

hmmm, I can't remember what the rpm is. But, it is not that steep. The wow factor is awesome. I'm telling you, it's not that bad, and if you are doing gears, you may as well go 4.10's. Your car will feel a ton faster.

**97whitevert** · 06-18-2008, 06:32 AM

I've got 4.10's in the 97, and won't change back. I manage mid 20's mpg on the highway, cruising at 70-75.

Even with teh a/c on and going topless!

tcrews · 06-18-2008, 11:21 AM

Leave them in. Your gas mileage shouldn't have been affected "that much" by a gear swap. I know when I went from 3.27 to 4.10s in my '97 my mileage changed.......practically ZERO.

What you probably need to change is the right foot, apparently it's too heavy

Seriously, driving "normal" between the stock gears and your 4.30s should only see a difference of maybe 1 mile per gallon between the two. Labor to install, reprogramming your computer for the gear change.....how much does 24mpg vs. 23mpg bother you?

I was getting 27 mpg in my '97......when it was stock. My "near stock" '98 only gets 23 at best. And that's with stock gears. I'm thinking a switch to 4.10s will get me a little better mpg just because I'll be able to actually use 5th gear on roads other than the highway.

nckissfan · 06-18-2008, 11:23 AM

all that running, and biking Jeff does, and his foot is still too heavy

flynfink · 06-18-2008, 11:37 AM

Quote:

Originally Posted by tcrews

Leave them in. Your gas mileage shouldn't have been affected "that much" by a gear swap. I know when I went from 3.27 to 4.10s in my '97 my mileage changed.......practically ZERO.

What you probably need to change is the right foot, apparently it's too heavy

Seriously, driving "normal" between the stock gears and your 4.30s should only see a difference of maybe 1 mile per gallon between the two. Labor to install, reprogramming your computer for the gear change.....how much does 24mpg vs. 23mpg bother you?

I was getting 27 mpg in my '97......when it was stock. My "near stock" '98 only gets 23 at best. And that's with stock gears. I'm thinking a switch to 4.10s will get me a little better mpg just because I'll be able to actually use 5th gear on roads other than the highway.

I disagree (and my foot isn't that heavy). In 5th gear, instead of 1800 RPM at 70 mph (stock gearing), I'm at 2800. Car used to get 24-26, now it's around 20-21 on the open road. If I'm at 75-80 mph, it's in the high teens. I already have an Abbott gearing converter installed for speedo error correction.

tcrews · 06-18-2008, 12:00 PM

70 mph with 3.27 is 2,000 rpm
70 mph with 4.56 is 2,800 rpm

(oops...just noticed you said 4.30 not 4.56).
That's only going to be 650rpm difference then...

650 rpm difference is not going to affect your gas mileage that much....

If you feel it's really affecting you that much...than switch your gears out. It's your car. I'd be getting rid of the 3.27s in my '98 if I had some extra money to spend on gears.....I find the stock gears absolutely horrible and completely mismatched for these engines. 3.55 and 3.73 not being a big enough difference to even matter.

Which RPM range works for you?

Engine RPM: 2007.34323826472
Vehicle Speed: 70
Read End Gear: 3.27

Engine RPM: 2179.22583970634
Vehicle Speed: 70
Read End Gear: 3.55

Engine RPM: 2289.72179777596
Vehicle Speed: 70
Read End Gear: 3.73

Engine RPM: 2516.8523782524
Vehicle Speed: 70
Read End Gear: 4.10

Engine RPM: 2639.62566499642
Vehicle Speed: 70
Read End Gear: 4.30

Engine RPM: 2799.23093776364
Vehicle Speed: 70
Read End Gear: 4.56

SVTSnak · 06-18-2008, 04:00 PM

Wow, looking at it broken down that way, it does seem like he might want to keep the 4.30's in.

It does seem worth it for me to go to 4.10's instead of 3.73's. It just seems like a huge difference, but apparently not when you use the "overdrive" 5th gear. 4.10's are only 500 rpm over stock...that's really not that much and I'm sure the "bottom end" increase with the gears are well worth it.

I'd consider keeping your 4.30's then...but totally up to you.

scorpio · 06-18-2008, 05:14 PM

i have 3.73's in my 01 and i wish i would have done 4.30's or 4.56. takes forever to get into the power on these cars.

**cobrabitn** · 06-18-2008, 07:58 PM

If I had a mod motor car naturally aspirated, I would have 4.10's in it. I drove Lisa's Cobra and it really woke the car up and the fun o meter was almost off the scale!

Jeff, I voted you leave the 4.30's in because it is a pain in the a$$ to have to get them swapped out, not to mention the cost. My stock 94 got 23-24 back and forth to work and 28-30 on the highway with the cruise set at 65 mph.

I've slowed down to 65 and the cruise set and the mileage has gone up from driving 70 mph.

My advice is that you drive a tad slower and you'll see the fuel mileage won't make a big difference. JMHO cause you asked for it.

Karnick · 07-10-2008, 06:16 AM

I would say leave the gears which seems to be the general thought. I put 4:10's in mine and the I went from getting 21 per gallon to 20 (city driving) I would suggest adding a right foot mod... different driving style, i find I get my best milage when I shift around 3k.

ProfChaos · 07-15-2008, 01:06 AM

Quote:

Originally Posted by nckissfan

svtsnak, go with 4.10's. That is what I have in mine, and I love them.

nckissfan is right. On my '96 Cobra, I have Ford Racing 4.10:1 Gears with Moser 31-Spline Axles, and I love the combination--it is both zippy and efficient, especially when cruising the highway.

cheers,

--Professor Chaos

View Poll Results: Gears
put stock back in - 3.27	2	7.41%
3.55	6	22.22%
3.73	7	25.93%
leave the 4:30's in	12	44.44%
Voters: 27. You may not vote on this poll

06-17-2008, 08:00 AM	#1
flynfink Registered User Join Date: Jun 2001 Location: Concord, NC Posts: 1,002	99 vert gears. Several years back I swapped the stock gears (3.27) in my 99 for a set of 4:30's on many folks recommendations. Well, that was before $5.00/ gallon or higher premium petrol. I want to get the rpm down to a more reasonable level when crusing the highways and back road, which is what the car is used for mostly. So, what gears go in? __________________ Jeff F. AKA FlynFink 07' Porscha Cayman S 99' Rio Red Cobra Vert. #203 of 4055 94' Black Cobra Coupe #4971 of 5009 "Drive it like ya stole it"

06-17-2008, 09:55 PM	#2
SVTSnak Registered User Join Date: Jun 2008 Location: Las Vegas babyyyy! Posts: 142	That's tough... I'm looking to switch out the stock gears for a deeper ratio (thinkin' 3.73s), but I hear ya on the gas pricing issue...so I'm curious as to see what responses you get. This will help me out too. Then again, maybe I best leave the stock ones in until they figure out what they are doing with this gas pricing crap. LOL __________________ Mat 1996 Black SVT Cobra SCMC# 1969 Plate: SVTSNAK Totally Mod-Free *South Bay Photography*

06-17-2008, 10:17 PM	#3
nckissfan Everyone hates a winner! Join Date: Jan 2004 Location: Browns Summit, NC Posts: 2,810	svtsnak, go with 4.10's. That is what I have in mine, and I love them. __________________

06-17-2008, 10:31 PM	#4
SVTSnak Registered User Join Date: Jun 2008 Location: Las Vegas babyyyy! Posts: 142	Those are a bit steep though, aren't they? What's your rpm in 5th gear, at say 65 mph? That'll give me a reference to what I'm doing now with the stock gears. __________________ Mat 1996 Black SVT Cobra SCMC# 1969 Plate: SVTSNAK Totally Mod-Free *South Bay Photography*

06-17-2008, 10:36 PM	#5
nckissfan Everyone hates a winner! Join Date: Jan 2004 Location: Browns Summit, NC Posts: 2,810	hmmm, I can't remember what the rpm is. But, it is not that steep. The wow factor is awesome. I'm telling you, it's not that bad, and if you are doing gears, you may as well go 4.10's. Your car will feel a ton faster. __________________

06-18-2008, 06:32 AM	#6
97whitevert well, maybe.... Join Date: Oct 2001 Location: anywhere, everywhere....NC Posts: 11,730	I've got 4.10's in the 97, and won't change back. I manage mid 20's mpg on the highway, cruising at 70-75. Even with teh a/c on and going topless! __________________ Lisa 97 white convertible #99 Born on 1/28/97 03 sonic blue coupe #323 Born on 6/4/02 86 SVO Mustang track beast- The older brother of the SVT ! 99 green BAT 95 laser red F150 06 sonic blue Escape "Live as if you were to die tomorrow. Learn as if you were to live forever." -- Mahatma Gandhi

06-18-2008, 11:21 AM	#7
tcrews Moderator Join Date: Jun 2001 Location: Lexington, SC Posts: 878	Leave them in. Your gas mileage shouldn't have been affected "that much" by a gear swap. I know when I went from 3.27 to 4.10s in my '97 my mileage changed.......practically ZERO. What you probably need to change is the right foot, apparently it's too heavy Seriously, driving "normal" between the stock gears and your 4.30s should only see a difference of maybe 1 mile per gallon between the two. Labor to install, reprogramming your computer for the gear change.....how much does 24mpg vs. 23mpg bother you? I was getting 27 mpg in my '97......when it was stock. My "near stock" '98 only gets 23 at best. And that's with stock gears. I'm thinking a switch to 4.10s will get me a little better mpg just because I'll be able to actually use 5th gear on roads other than the highway. __________________ Tom Crews 1997 Cobra Coupe #3672, SCMC #82 571 rwHP 462 rwTQ ------- 1998 Cobra Convertible 264 rwHP 268 rwTQ Tom's SVT Cobra Page

06-18-2008, 11:23 AM	#8
nckissfan Everyone hates a winner! Join Date: Jan 2004 Location: Browns Summit, NC Posts: 2,810	all that running, and biking Jeff does, and his foot is still too heavy __________________

06-18-2008, 12:00 PM	#10
tcrews Moderator Join Date: Jun 2001 Location: Lexington, SC Posts: 878	70 mph with 3.27 is 2,000 rpm 70 mph with 4.56 is 2,800 rpm (oops...just noticed you said 4.30 not 4.56). That's only going to be 650rpm difference then... 650 rpm difference is not going to affect your gas mileage that much.... If you feel it's really affecting you that much...than switch your gears out. It's your car. I'd be getting rid of the 3.27s in my '98 if I had some extra money to spend on gears.....I find the stock gears absolutely horrible and completely mismatched for these engines. 3.55 and 3.73 not being a big enough difference to even matter. Which RPM range works for you? Engine RPM: 2007.34323826472 Vehicle Speed: 70 Read End Gear: 3.27 Engine RPM: 2179.22583970634 Vehicle Speed: 70 Read End Gear: 3.55 Engine RPM: 2289.72179777596 Vehicle Speed: 70 Read End Gear: 3.73 Engine RPM: 2516.8523782524 Vehicle Speed: 70 Read End Gear: 4.10 Engine RPM: 2639.62566499642 Vehicle Speed: 70 Read End Gear: 4.30 Engine RPM: 2799.23093776364 Vehicle Speed: 70 Read End Gear: 4.56 __________________ Tom Crews 1997 Cobra Coupe #3672, SCMC #82 571 rwHP 462 rwTQ ------- 1998 Cobra Convertible 264 rwHP 268 rwTQ Tom's SVT Cobra Page

06-18-2008, 04:00 PM	#11
SVTSnak Registered User Join Date: Jun 2008 Location: Las Vegas babyyyy! Posts: 142	Wow, looking at it broken down that way, it does seem like he might want to keep the 4.30's in. It does seem worth it for me to go to 4.10's instead of 3.73's. It just seems like a huge difference, but apparently not when you use the "overdrive" 5th gear. 4.10's are only 500 rpm over stock...that's really not that much and I'm sure the "bottom end" increase with the gears are well worth it. I'd consider keeping your 4.30's then...but totally up to you. __________________ Mat 1996 Black SVT Cobra SCMC# 1969 Plate: SVTSNAK Totally Mod-Free *South Bay Photography*

06-18-2008, 05:14 PM	#12
scorpio Registered User Join Date: Mar 2007 Location: tomball,tx Posts: 89	i have 3.73's in my 01 and i wish i would have done 4.30's or 4.56. takes forever to get into the power on these cars. __________________

06-18-2008, 07:58 PM	#13
cobrabitn Dr Jekyll on the street, Mr Hyde on the track Join Date: Jun 2001 Location: Rock Hill SC Posts: 14,649	If I had a mod motor car naturally aspirated, I would have 4.10's in it. I drove Lisa's Cobra and it really woke the car up and the fun o meter was almost off the scale! Jeff, I voted you leave the 4.30's in because it is a pain in the a$$ to have to get them swapped out, not to mention the cost. My stock 94 got 23-24 back and forth to work and 28-30 on the highway with the cruise set at 65 mph. I've slowed down to 65 and the cruise set and the mileage has gone up from driving 70 mph. My advice is that you drive a tad slower and you'll see the fuel mileage won't make a big difference. JMHO cause you asked for it. __________________ Cobrabitn 2016 Ruby Red Metallic with Caribou accent F-350 Crew Cab Stump Puller! 6.7 Diesel Automatic with Chrome Package, Off Road Package, 3.55 Locking axles, and Ultimate Lariat Interior Trim Package! 2017 Shelby GT350 Coupe - track car! Mods: JLT True Cold Air oil catch can 2009 Vista Blue Shelby GT 500 Coupe - Garage Queen Tinted Windows JLT True Cold Air Kit Pro-Dyno Tune 526 rwhp - 511 rwtq 1994 Rio Red Indy Pace Car #22 "Runabout" Snake in the grill MGW shift knob 1996 SVT Cobra Wheels 1969 New Lime Mustang Mach 1 Sportsroof - Second owner - bone stock with shaker. One SVT Cobra, one Shelby GT500, one 69 mach 1, and a Shelby GT350 is better than nothing! Custom Data Plates for your Mustang or Ford! Buy "Cool Merchandise" at Data Plates Plus www.dataplatesplus.com See my MSR Video here!

07-10-2008, 06:16 AM	#14
Karnick Registered User Join Date: Apr 2008 Posts: 8	I would say leave the gears which seems to be the general thought. I put 4:10's in mine and the I went from getting 21 per gallon to 20 (city driving) I would suggest adding a right foot mod... different driving style, i find I get my best milage when I shift around 3k. __________________ 97 Cobra Convertible #2807 C&L intake / Magnaflow X / Magnaflow cat back/ New and improved with FR 4:10's SCT tuned by Lund Racing Proud Member of the Mid-Atlantic Cobra Association

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