gear ratio question

haywood11 · February 18th, 2009, 10:10 AM

this may have been asked before but what the hell. i have an 88 lx that i converted to a five speed. my question is what is the rear end gear ratio? i know that the 5-speeds came with 2.73s but i have no clue what the autos came with.

grnstang · February 18th, 2009, 10:29 AM

i think you need to get the axle code or whatever and someone on here could probably tell you

R0B0T · February 18th, 2009, 10:32 AM

jack the rear up, have someone spin the tire around once, count how many times the driveshaft spins...

Iwannagofast · February 18th, 2009, 12:02 PM

probly 3.08s

dr.gonzo! · February 18th, 2009, 12:06 PM

Mine was an auto and when I read the book that was in my glove box the guy wrote down that the 2.73 gears have been replaced with 3.73's dont know if he was right but I think the options back then was 2.73 or 3.08

haywood11 · February 18th, 2009, 02:47 PM

thats what i was figuring, 3.08s. i was wondering why my car ran at higher rpms then my buddys. thanks guys i appreciate it.

Rage Wraps · February 18th, 2009, 03:20 PM

Didn't they all come with different ratios? I thought they ranged from 2.73's, 3.08's and 3.23's. Take the cover off and spin the tire. Count how many times she does around and then you will know.

Racinjason81 · February 18th, 2009, 06:56 PM

they came with 2.73s,3.08s or in rare occasions 3.27s

86_Notch · February 18th, 2009, 07:09 PM

either way it's not enough gear, put some 373s in there and be done

R0B0T · February 18th, 2009, 08:30 PM

if you drive at higher rpms than your buddy, you have a shorter gear...
which is numerically higher

spin the tire and count the driveshaft spins, then you will know for sure!

flyin ryan · February 19th, 2009, 02:49 AM

base gear set was 2.73's, gt's and gt optioned lx's got 3.08's while v8 verts all got 3.27

Cool Bam · February 19th, 2009, 03:13 AM

I even got 373's on my 4 banger.

373's FTW!

haywood11 · February 20th, 2009, 09:06 AM

my buddy has a set of 430s he will sell me for $100, my drive to work is only 3miles so i thinnnk i might go with them........

M L Struck · February 20th, 2009, 09:34 AM

That will be fun, but you will never need first gear.

flyin ryan · February 20th, 2009, 09:45 AM

Originally Posted by haywood11

my buddy has a set of 430s he will sell me for $100, my drive to work is only 3miles so i thinnnk i might go with them........

With a stock cam? I wouldn't go with that much gear

marlow331 · February 20th, 2009, 05:57 PM

sometimes there is still a metal tag with the code. mine says 327L or something like meaning 3.27 gears from factory. i double checked with the tire spin count driveshaft revs method and it concurred

87FloridaGT · February 20th, 2009, 06:20 PM

Originally Posted by haywood11

my buddy has a set of 430s he will sell me for $100, my drive to work is only 3miles so i thinnnk i might go with them........

Wow...that ought to be fun with 4:30's LoL I would not go with that gear ratio if I were you but I am not you so have at it.
3:73's should be plenty for that car
Plus your buddy may just want to unload them because that is a pretty stout gear ratio which he probably doesnt like

86_Notch · February 20th, 2009, 06:47 PM

430s will be fine ( if you plan on running a 30 inch tire )

superbean · February 20th, 2009, 09:50 PM

Originally Posted by M L Struck

That will be fun, but you will never need first gear.

lol my buddy ran a 4cyl t5 and 4.30's for about a year

2nd gear is useless two lol

chickenbot · February 21st, 2009, 02:52 AM

i have a t5 and stock was 3.08 but now 3.55.. i have a truck w/ 37" tires and 4.56 all the way around and the speedo is still slower than the truck lol

February 18th, 2009, 10:10 AM	#1
haywood11 Regular 1988 mustang lx interior torn out! Join Date: Jul 2007 Location: jacksonville,NC Posts: 273 iTrader: 0 reviews	gear ratio question this may have been asked before but what the hell. i have an 88 lx that i converted to a five speed. my question is what is the rear end gear ratio? i know that the 5-speeds came with 2.73s but i have no clue what the autos came with. __________________ 88 5.0 with bbk shorties, bassani x-pipe w/o cats, custom 2.5in w/flowmasters. t-5 conversion, gt40p heads cobra upper and lower. stock SD. Plans: full black interior, black paint and supercharger???

February 18th, 2009, 10:29 AM	#2
grnstang Hardcore Enthusiast 91 LX 13.7@101 Join Date: Oct 2008 Location: Norwalk OH Posts: 1,426 iTrader: 1 reviews	i think you need to get the axle code or whatever and someone on here could probably tell you __________________

February 18th, 2009, 02:47 PM	#6
haywood11 Regular 1988 mustang lx interior torn out! Join Date: Jul 2007 Location: jacksonville,NC Posts: 273 iTrader: 0 reviews	thats what i was figuring, 3.08s. i was wondering why my car ran at higher rpms then my buddys. thanks guys i appreciate it. __________________ 88 5.0 with bbk shorties, bassani x-pipe w/o cats, custom 2.5in w/flowmasters. t-5 conversion, gt40p heads cobra upper and lower. stock SD. Plans: full black interior, black paint and supercharger???

February 18th, 2009, 06:56 PM	#8
Racinjason81 Hardcore Enthusiast Join Date: Feb 2007 Location: New jersey Posts: 1,559 iTrader: 0 reviews	they came with 2.73s,3.08s or in rare occasions 3.27s __________________ Heres a real funny video youtube.com/watch?v=ojB7KkaR03I VTEC stands for Very Torqueless Economy Car Honda stands for Hold On Not Done Accelerating 1991 LX 5.0 H/B(T-70 turbo coming soon)

February 18th, 2009, 07:09 PM	#9
86_Notch Hardcore Enthusiast 1986 lx notch 9.98 @ 135 Join Date: Mar 2007 Location: Delaware Posts: 1,521 iTrader: 0 reviews	either way it's not enough gear, put some 373s in there and be done __________________ " Spending money I don't have.... on things I don't need .... to impress people I don't know " .

February 18th, 2009, 10:32 AM	#3
R0B0T Banned 12.8@103... stock motor 11.8@113...150 shot Join Date: Apr 2008 Posts: 464 iTrader: 0 reviews	jack the rear up, have someone spin the tire around once, count how many times the driveshaft spins...

February 18th, 2009, 03:20 PM	#7
Rage Wraps Newbie Join Date: Feb 2009 Posts: 33 iTrader: 0 reviews	Didn't they all come with different ratios? I thought they ranged from 2.73's, 3.08's and 3.23's. Take the cover off and spin the tire. Count how many times she does around and then you will know.

February 18th, 2009, 08:30 PM	#10
R0B0T Banned 12.8@103... stock motor 11.8@113...150 shot Join Date: Apr 2008 Posts: 464 iTrader: 0 reviews	if you drive at higher rpms than your buddy, you have a shorter gear... which is numerically higher spin the tire and count the driveshaft spins, then you will know for sure!

February 19th, 2009, 02:49 AM	#11
flyin ryan Banned Join Date: Jun 2008 Posts: 3,387 iTrader: 0 reviews	base gear set was 2.73's, gt's and gt optioned lx's got 3.08's while v8 verts all got 3.27

February 19th, 2009, 03:13 AM	#12
Cool Bam Banned 87 stang + 97 ranger both combined i can't break 15 secs. Join Date: Jan 2009 Location: Somewhere in Cbus OH Posts: 475 iTrader: 0 reviews	I even got 373's on my 4 banger. 373's FTW!

February 20th, 2009, 09:06 AM	#13
haywood11 Regular 1988 mustang lx interior torn out! Join Date: Jul 2007 Location: jacksonville,NC Posts: 273 iTrader: 0 reviews	my buddy has a set of 430s he will sell me for $100, my drive to work is only 3miles so i thinnnk i might go with them........ __________________ 88 5.0 with bbk shorties, bassani x-pipe w/o cats, custom 2.5in w/flowmasters. t-5 conversion, gt40p heads cobra upper and lower. stock SD. Plans: full black interior, black paint and supercharger???

February 20th, 2009, 09:34 AM	#14
M L Struck Hardcore Enthusiast 85 GT/86 SVO/2010 GT500 Join Date: Oct 2008 Location: Rossville IN Posts: 1,183 iTrader: 0 reviews	That will be fun, but you will never need first gear.

February 20th, 2009, 05:57 PM	#16
marlow331 Regular 1995 Mustang GT Join Date: Feb 2009 Location: Kentucky Posts: 63 iTrader: 0 reviews	sometimes there is still a metal tag with the code. mine says 327L or something like meaning 3.27 gears from factory. i double checked with the tire spin count driveshaft revs method and it concurred

February 20th, 2009, 06:47 PM	#18
86_Notch Hardcore Enthusiast 1986 lx notch 9.98 @ 135 Join Date: Mar 2007 Location: Delaware Posts: 1,521 iTrader: 0 reviews	430s will be fine ( if you plan on running a 30 inch tire ) __________________ " Spending money I don't have.... on things I don't need .... to impress people I don't know " .

February 21st, 2009, 02:52 AM	#20
chickenbot Enthusiast 1990 mustang gt eventually Join Date: Nov 2007 Location: plano, tx Posts: 938 iTrader: 0 reviews	i have a t5 and stock was 3.08 but now 3.55.. i have a truck w/ 37" tires and 4.56 all the way around and the speedo is still slower than the truck lol __________________ 1990 gt 5.0 Mac Performance 76mm straight shot intake 70mm Accufab tb and egr spacer Trick Flow Track Heat u/l intake 3.55 gears MSD distributor, Blaster Coil, and 8.5mm wires

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