What gear do I have?

Brutal87 · 12-12-2005, 02:52 AM

OK.. I know your all sick of seeing all my posts but I have 1 more..

I bought this car a few weeks ago.. I check all the forums that the owner posted in. I wanted to see if the car had any past issues. OK with that said.. All the posts say the car has 3.73 gears. The guy I bought it from said the gears were stock. He said 80% of the mods were done to the car by the guy that owned it before him. The person passed away & he bought the car from the guys wife. The guy that passed away did a hell of a job building this car. It started out as an '87 GT but has been updated to a '93 LX. In & out (It even has the air bag) Sorry I'm getting off topic here.. I was going to have a 3.73 installed next week but now I don't know if the car has one or not..

Check out the pic.

How can I find out what gear the car has?

Thanks
Carl

banditmwp · 12-12-2005, 04:51 AM

What kind of RPM you pulling at 80 mph in 5th?

Brutal87 · 12-12-2005, 04:57 AM

Quote:

Originally Posted by banditmwp

What kind of RPM you pulling at 80 mph in 5th?

Good idea.. I never thought of that.

I havent been able to drive the car yet, I bought it with a nasty oil leak (lower rear intake seal). I just fixed it but I have a ton of snow. As soon as the streets dry up a bit.. I'll take it out & check.

Thanks

QWKSNKE · 12-12-2005, 05:00 AM

you can pull the cover and read the #'s that are stamped on the ring gear. It should say something like 41-11 somewhere. This is referring to the teeth on both gears. you can divide this number to find out what you have

Italian LX · 12-12-2005, 05:20 AM

I agree with pulling the cover and either finding the stamp or just counting the teeth on each gear.

You can also get an idea of what gears you have by lifting the rear tires off the ground, turning the rear wheels by hand, and count how many times the driveshaft rotates for each rotation of the back wheels (make sure both tires are both rotating the same direction and at the same speed).

You may not be able to tell the differnce between 3.55 and 3.73, but you should be able to tell if it's close.

Shankin · 12-12-2005, 09:41 AM

Yeah what he was saying.

bill302 · 12-13-2005, 02:24 PM

jack up rear of car mark tire and drive shaft have a friend turn the tire exactly one rotation using mark as reference as you lay under the car and count the number of drive shaft rotations. with one complete tire rotation for 3.08 gears, driveshaft will turn 3 complete turns plus .08 of a turn. (approx 3 1/8 turns) with 3.55 gears driveshaft will turn 3 complete turns plus .55 of a turn (approx.3 1/2 turns). with 3.73 gears driveshaft will turn 3 complete turns plus .73 (approx 31/4 turns) 4.10 gears 4.1 turns ect......

Brutal87 · 12-14-2005, 07:01 AM

Thanks for the help guys.. I'm going to check it out today..

coupe · 12-14-2005, 07:35 AM

Like above. Jack up car...spin driveshaft looking at a reference point on the tire.

Brutal87 · 12-14-2005, 07:06 PM

Thanks.. I'm going to check it out this weekend.

12-12-2005, 02:52 AM	#1
Brutal87 Senior Member Join Date: Dec 2005 Location: Illinois Posts: 173	What gear do I have? OK.. I know your all sick of seeing all my posts but I have 1 more.. I bought this car a few weeks ago.. I check all the forums that the owner posted in. I wanted to see if the car had any past issues. OK with that said.. All the posts say the car has 3.73 gears. The guy I bought it from said the gears were stock. He said 80% of the mods were done to the car by the guy that owned it before him. The person passed away & he bought the car from the guys wife. The guy that passed away did a hell of a job building this car. It started out as an '87 GT but has been updated to a '93 LX. In & out (It even has the air bag) Sorry I'm getting off topic here.. I was going to have a 3.73 installed next week but now I don't know if the car has one or not.. Check out the pic. How can I find out what gear the car has? Thanks Carl __________________ '90 GT, Resto-Mod Under Way ~ '07 GT, Slammed, 20's, Procharger going in ~ '05 Foci, The Driver

12-12-2005, 04:51 AM	#2
banditmwp Welcome to America! Join Date: Dec 2004 Location: in the 11's Posts: 4,501	Re: What gear do I have? What kind of RPM you pulling at 80 mph in 5th? __________________ 91 GT Convertible 2006 Nissan Titan LE Crew Cab 2014 Peterbilt 337/Marion 22' box

12-12-2005, 05:00 AM	#4
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	Re: What gear do I have? you can pull the cover and read the #'s that are stamped on the ring gear. It should say something like 41-11 somewhere. This is referring to the teeth on both gears. you can divide this number to find out what you have __________________ 2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy

12-12-2005, 05:20 AM	#5
Italian LX Daddy x4 ...we're done Join Date: Dec 2004 Location: Oxford, AL Posts: 11,551	Re: What gear do I have? I agree with pulling the cover and either finding the stamp or just counting the teeth on each gear. You can also get an idea of what gears you have by lifting the rear tires off the ground, turning the rear wheels by hand, and count how many times the driveshaft rotates for each rotation of the back wheels (make sure both tires are both rotating the same direction and at the same speed). You may not be able to tell the differnce between 3.55 and 3.73, but you should be able to tell if it's close. __________________ -Brian '86 Mustang GT Convertible '88 Mustang LX coupe '11 Odyssey TE '21 Insight Touring

12-12-2005, 09:41 AM	#6
Shankin Senior Member Join Date: Jul 2005 Posts: 339	Re: What gear do I have? Yeah what he was saying. __________________ Pro Speed Performance 770 222 5015

12-13-2005, 02:24 PM	#7
bill302 Senior Member Join Date: Nov 2005 Posts: 155	Re: What gear do I have? jack up rear of car mark tire and drive shaft have a friend turn the tire exactly one rotation using mark as reference as you lay under the car and count the number of drive shaft rotations. with one complete tire rotation for 3.08 gears, driveshaft will turn 3 complete turns plus .08 of a turn. (approx 3 1/8 turns) with 3.55 gears driveshaft will turn 3 complete turns plus .55 of a turn (approx.3 1/2 turns). with 3.73 gears driveshaft will turn 3 complete turns plus .73 (approx 31/4 turns) 4.10 gears 4.1 turns ect......

12-14-2005, 07:01 AM	#8
Brutal87 Senior Member Join Date: Dec 2005 Location: Illinois Posts: 173	Re: What gear do I have? Thanks for the help guys.. I'm going to check it out today.. __________________ '90 GT, Resto-Mod Under Way ~ '07 GT, Slammed, 20's, Procharger going in ~ '05 Foci, The Driver

12-14-2005, 07:35 AM	#9
coupe Super Moderator Join Date: Dec 2004 Posts: 6,313	Re: What gear do I have? Like above. Jack up car...spin driveshaft looking at a reference point on the tire. __________________ " If you can't explain it simply, you don't understand it well enough. " - Albert Einstein

12-14-2005, 07:06 PM	#10
Brutal87 Senior Member Join Date: Dec 2005 Location: Illinois Posts: 173	Re: What gear do I have? Thanks.. I'm going to check it out this weekend. __________________ '90 GT, Resto-Mod Under Way ~ '07 GT, Slammed, 20's, Procharger going in ~ '05 Foci, The Driver