3.73 question
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I guess it all depends what exact year your t-5 was built in. If the car was built in 1990 and it has a 8 tooth tranny gear then you need a 23 tooth gear for the 3.73's. the speedo won't be completely accurate but it will be close. if it is a 1989 tranny then you will need a 21 tooth gear for 3.73 because the drive tooth in the tranny is a 7 tooth drive. The best thing to do is get the number off your tranny and do a google search with it to determine what gear it has in it for the speedo the 7 or 8 tooth.
srothfuss
Last night I stabbed the same guy 7 times in a row
If you do the gears on your own, make sure you have a friend with some rear end experience to help you out.
Rear ends are a job I pay to have done
Rear ends are a job I pay to have done
mike50sa
New Member
Most of the big Mustang parts houses have the gears you'll need (transmission and speedo).
You'll like the acceleration w/373's. Don't forget to get your axle bearings replaced at the same time.
When I had mine done it wasn't long before I had to get lower control arms to control it. If I had to do it again I'd do the control arms first. Just my $.02
You'll like the acceleration w/373's. Don't forget to get your axle bearings replaced at the same time.
When I had mine done it wasn't long before I had to get lower control arms to control it. If I had to do it again I'd do the control arms first. Just my $.02
srothfuss
Last night I stabbed the same guy 7 times in a row
Look in your driver door jam. There should be a sticker with a bunch of letters and number on that. Write down the ones with the trans code above it and go to this website: www.mustanggt.org Put in the tranny information into the door tag decoder and it'll tell you what year trans you have.
bill302
Active Member
below is a list of parts you will need to install gears properly these are the exact parts i bought to install mine so i know there good quality....
i bought a used set of ford gears off e-bay and saved approx $125-$150 but before buying you need to contact buyer and ensure he has a return policy and that gears are in good shape with no breaks,crack or chips and pay thru paypal to only paypal verified sellers this is a step most people overlook but if you do as i stated above you will get a good quality part and if you have problems you can return for a refund and if you still have problems e-bay and paypal will help but this happens rarely if you do as i said by contacting seller and asking questions,ensuring they have a return policy and buying only from verified paypal sellers with paypal its worth the savings it was for me click on link below for a set of ford gears for sale...similar to the one i bought..
http://cgi.ebay.com/ebaymotors/Used...2QQihZ019QQcategoryZ33731QQrdZ1QQcmdZViewItem
you will need a master bearing kit like the one in the link below...
http://cgi.ebay.com/ebaymotors/MAST...ryZ33731QQssPageNameZWD1VQQrdZ1QQcmdZViewItem
traction loc rebuild kit like the one in the link below... friction modifier is included with kit...
http://cgi.ebay.com/ebaymotors/Ford...ryZ33731QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
rear axle shaft bearings and seals (2) like the one in the link below...
http://www.partsamerica.com/Product...et=A&SearchFor=Wheel Bearing, Rear Axle Shaft
3.75 pints of hypoid gear lubricant sae 80 or 90...get this at any autoparts store...
and a speedo gear like the one listed in the link....
1990 model tranny
http://cgi.ebay.com/ebaymotors/T5-T...5QQihZ019QQcategoryZ33731QQrdZ1QQcmdZViewItem
1989 model tranny...speedo gear...
http://motors.search.ebay.com/searc...00&fpos=35905&ftrt=1&ftrv=1&saprclo=&saprchi=
i bought a used set of ford gears off e-bay and saved approx $125-$150 but before buying you need to contact buyer and ensure he has a return policy and that gears are in good shape with no breaks,crack or chips and pay thru paypal to only paypal verified sellers this is a step most people overlook but if you do as i stated above you will get a good quality part and if you have problems you can return for a refund and if you still have problems e-bay and paypal will help but this happens rarely if you do as i said by contacting seller and asking questions,ensuring they have a return policy and buying only from verified paypal sellers with paypal its worth the savings it was for me click on link below for a set of ford gears for sale...similar to the one i bought..
http://cgi.ebay.com/ebaymotors/Used...2QQihZ019QQcategoryZ33731QQrdZ1QQcmdZViewItem
you will need a master bearing kit like the one in the link below...
http://cgi.ebay.com/ebaymotors/MAST...ryZ33731QQssPageNameZWD1VQQrdZ1QQcmdZViewItem
traction loc rebuild kit like the one in the link below... friction modifier is included with kit...
http://cgi.ebay.com/ebaymotors/Ford...ryZ33731QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
rear axle shaft bearings and seals (2) like the one in the link below...
http://www.partsamerica.com/Product...et=A&SearchFor=Wheel Bearing, Rear Axle Shaft
3.75 pints of hypoid gear lubricant sae 80 or 90...get this at any autoparts store...
and a speedo gear like the one listed in the link....
1990 model tranny
http://cgi.ebay.com/ebaymotors/T5-T...5QQihZ019QQcategoryZ33731QQrdZ1QQcmdZViewItem
1989 model tranny...speedo gear...
http://motors.search.ebay.com/searc...00&fpos=35905&ftrt=1&ftrv=1&saprclo=&saprchi=
Roland69
Sergeant Tangnet
Manual Transmissions with 6 Tooth Drive Gear
Not found in OEM applications
Item Number
Description
N/A
3.08 Gear Ratio / Not possible
C0DZ-17271-A
3.27 Gear Ratio / Maroon 16 Speedo Gear
C3DZ-17271-C
3.55 Gear Ratio / White 17 Speedo Gear
C0DD-17271-B
3.73 Gear Ratio / Yellow 18 Speedo Gear
C0DZ-17271-B
3.90 Gear Ratio / Pink 19 Speedo Gear
C1DZ-17271-A
4.10 Gear Ratio / Black 20 Speedo Gear
C4OZ-17271-A
4.30 Gear Ratio / Red 21 Speedo Gear
Manual Transmissions with 7 Tooth Drive Gear
1983-1989 T-5 OEM
Pre 1993 T-5 Aftermarket
1996-1998 Cobra T-45 OEM
All Tremec Transmissions
Item Number
Description
C0DZ-17271-A
2.73 Gear Ratio / Maroon 16 Speedo Gear
C0DD-17271-B
3.08 Gear Ratio / Yellow 18 Speedo Gear
C0DZ-17271-B
3.27 Gear Ratio / Pink 19 Speedo Gear
C1DZ-17271-A
3.55 Gear Ratio / Black 20 Speedo Gear
C4OZ-17271-A
3.73 Gear Ratio / Red 21 Speedo Gear
Jeep Part #j3167393
4.10 Gear Ratio / White 23 Speedo Gear
Manual Transmissions with 8 Tooth Drive Gear
1990-1995 T-5 OEM
1996-1998 T-45 OEM Except Cobra
Item Number
Description
C0DD-17271-B
2.73 Gear Ratio / Yellow 18 Speedo Gear
C1DZ-17271-A
3.08 Gear Ratio / Black 20 Speedo Gear
C4OZ-17271-A
3.27 Gear Ratio / Red 21 Speedo Gear
Jeep Part #j3167393
3.55 Gear Ratio / White 23 Speedo Gear
Jeep Part #j3167393
3.73 Gear Ratio / White 23 Speedo Gear (Not 100% accurate. This combination will offer the best accuracy without changing the drive gear. Change drive gear to a 6 tooth for complete accuracy. See 6 tooth table.)
Jeep Part #j3167393
4.10 Gear Ratio / White 23 Speedo Gear (Not 100% accurate. This combination will offer the best accuracy without changing the drive gear. Change drive gear to a 6 tooth for complete accuracy. See 6 tooth table.)
Automatic Transmissions with 7 Tooth Drive Gear
1983-1989 Automatic Transmissions
Item Number
Description
D0AZ-17271-A
2.73 Gear Ratio / Blue 16 Speedo Gear
C7AZ-17271-B
3.08 Gear Ratio / Gray 18 Speedo Gear
C7VY-17271-A
3.27 Gear Ratio / Tan 19 Speedo Gear
C8SZ-17271-B
3.55 Gear Ratio / Orange 20 Speedo Gear
D0OZ-17271-B
3.73 Gear Ratio / Purple 21 Speedo Gear
Jeep Part #j3167393
4.10 Gear Ratio / White 23 Speedo Gear
Automatic Transmissions with 8 Tooth Drive Gear
1990-1998 Automatic Transmissions
Item Number
Description
C7AZ-17271-B
2.73 Gear Ratio / Gray 18 Speedo Gear
C8SZ-17271-B
3.08 Gear Ratio / Orange 20 Speedo Gear
D0OZ-17271-B
3.27 Gear Ratio / Purple 21 Speedo Gear
Jeep Part #j3167393
3.55 Gear Ratio / White 23 Speedo Gear
Jeep Part #j3167393
3.73 Gear Ratio / White 23 Speedo Gear (Not 100% accurate.)
Jeep Part #j3167393
4.10 Gear Ratio / White 23 Speedo Gear (Not 100% accurate.)
Now if you really want to change the internal drive gear of your manual tranny you can match it according to the table below. Be aware that the 6 tooth will offer the most combos for numerically higher gear ratios and offer the greatest degree of accuracy. The 6 tooth gear selection table for a manual tranny is the first in the page.
Item Number
Description
E3ZZ-17285-B
6 Tooth Internal Drive Gear / Black
E3ZZ-17285-A
7 Tooth Internal Drive Gear / Yellow
F0ZZ-17285-A
8 Tooth Internal Drive Gear / Green
Not found in OEM applications
Item Number
Description
N/A
3.08 Gear Ratio / Not possible
C0DZ-17271-A
3.27 Gear Ratio / Maroon 16 Speedo Gear
C3DZ-17271-C
3.55 Gear Ratio / White 17 Speedo Gear
C0DD-17271-B
3.73 Gear Ratio / Yellow 18 Speedo Gear
C0DZ-17271-B
3.90 Gear Ratio / Pink 19 Speedo Gear
C1DZ-17271-A
4.10 Gear Ratio / Black 20 Speedo Gear
C4OZ-17271-A
4.30 Gear Ratio / Red 21 Speedo Gear
Manual Transmissions with 7 Tooth Drive Gear
1983-1989 T-5 OEM
Pre 1993 T-5 Aftermarket
1996-1998 Cobra T-45 OEM
All Tremec Transmissions
Item Number
Description
C0DZ-17271-A
2.73 Gear Ratio / Maroon 16 Speedo Gear
C0DD-17271-B
3.08 Gear Ratio / Yellow 18 Speedo Gear
C0DZ-17271-B
3.27 Gear Ratio / Pink 19 Speedo Gear
C1DZ-17271-A
3.55 Gear Ratio / Black 20 Speedo Gear
C4OZ-17271-A
3.73 Gear Ratio / Red 21 Speedo Gear
Jeep Part #j3167393
4.10 Gear Ratio / White 23 Speedo Gear
Manual Transmissions with 8 Tooth Drive Gear
1990-1995 T-5 OEM
1996-1998 T-45 OEM Except Cobra
Item Number
Description
C0DD-17271-B
2.73 Gear Ratio / Yellow 18 Speedo Gear
C1DZ-17271-A
3.08 Gear Ratio / Black 20 Speedo Gear
C4OZ-17271-A
3.27 Gear Ratio / Red 21 Speedo Gear
Jeep Part #j3167393
3.55 Gear Ratio / White 23 Speedo Gear
Jeep Part #j3167393
3.73 Gear Ratio / White 23 Speedo Gear (Not 100% accurate. This combination will offer the best accuracy without changing the drive gear. Change drive gear to a 6 tooth for complete accuracy. See 6 tooth table.)
Jeep Part #j3167393
4.10 Gear Ratio / White 23 Speedo Gear (Not 100% accurate. This combination will offer the best accuracy without changing the drive gear. Change drive gear to a 6 tooth for complete accuracy. See 6 tooth table.)
Automatic Transmissions with 7 Tooth Drive Gear
1983-1989 Automatic Transmissions
Item Number
Description
D0AZ-17271-A
2.73 Gear Ratio / Blue 16 Speedo Gear
C7AZ-17271-B
3.08 Gear Ratio / Gray 18 Speedo Gear
C7VY-17271-A
3.27 Gear Ratio / Tan 19 Speedo Gear
C8SZ-17271-B
3.55 Gear Ratio / Orange 20 Speedo Gear
D0OZ-17271-B
3.73 Gear Ratio / Purple 21 Speedo Gear
Jeep Part #j3167393
4.10 Gear Ratio / White 23 Speedo Gear
Automatic Transmissions with 8 Tooth Drive Gear
1990-1998 Automatic Transmissions
Item Number
Description
C7AZ-17271-B
2.73 Gear Ratio / Gray 18 Speedo Gear
C8SZ-17271-B
3.08 Gear Ratio / Orange 20 Speedo Gear
D0OZ-17271-B
3.27 Gear Ratio / Purple 21 Speedo Gear
Jeep Part #j3167393
3.55 Gear Ratio / White 23 Speedo Gear
Jeep Part #j3167393
3.73 Gear Ratio / White 23 Speedo Gear (Not 100% accurate.)
Jeep Part #j3167393
4.10 Gear Ratio / White 23 Speedo Gear (Not 100% accurate.)
Now if you really want to change the internal drive gear of your manual tranny you can match it according to the table below. Be aware that the 6 tooth will offer the most combos for numerically higher gear ratios and offer the greatest degree of accuracy. The 6 tooth gear selection table for a manual tranny is the first in the page.
Item Number
Description
E3ZZ-17285-B
6 Tooth Internal Drive Gear / Black
E3ZZ-17285-A
7 Tooth Internal Drive Gear / Yellow
F0ZZ-17285-A
8 Tooth Internal Drive Gear / Green
I just bought a new set of Richmond 3.73s from a guy (with installation kit) and they have a video showing how to do the install. The install of the gears doesn't look too difficult if you have the right tools. It's just the rebuild of the traction lock that I have no clue about. I might try to install my gears myself, but I'm not sure yet. Still some parts to get for it first.
Flavadave4
Active Member
21 tooth red gear is what was needed for my 89.......like previously said you will want to find out how many teeth on the tranny gear
maverick0716
Founding Member
bill302
Active Member
this is a list of what the master bearing kit contains
FRONT & REAR PINION BEARINGS
PINION SEAL
CARRIER BEARINGS
GEAR MARKING COMPOUND
CRUSH SLEEVE
PINION NUT
BRUSH
LOCTITE AND COVER GASKET OR RTV
RING GEAR BOLTS
PINION SHIMS
CARRIER SHIMS
this is all needed to do a proper install (rebuild) it allows you to replace all of the bearings and seals within your axle housing and it also contains a new crush sleeve and pinion nut which has to be replaced. ands new shims to adjust new gears properly, new ring bolts which its a good idea to replace these and gaskets loktite for ring gear bolts brush and gear marking compound to check gear pattern after installation....
FRONT & REAR PINION BEARINGS
PINION SEAL
CARRIER BEARINGS
GEAR MARKING COMPOUND
CRUSH SLEEVE
PINION NUT
BRUSH
LOCTITE AND COVER GASKET OR RTV
RING GEAR BOLTS
PINION SHIMS
CARRIER SHIMS
this is all needed to do a proper install (rebuild) it allows you to replace all of the bearings and seals within your axle housing and it also contains a new crush sleeve and pinion nut which has to be replaced. ands new shims to adjust new gears properly, new ring bolts which its a good idea to replace these and gaskets loktite for ring gear bolts brush and gear marking compound to check gear pattern after installation....
Is it a shop? All i did was bring my gears, bearing kit, axle bearings, and trac lock rebuild. He got the fluid and put the speedo gear in for free. Install all that only cost $250. always have extra money when you take your car to a shop though, gear instal only cost 250 but I came out that day spending an unexpected 700 bucks.
Gears: http://www.latemodelrestoration.com/iwwida.pvx?;item?item_no=M4209F373 1&comp=LRS
Bearings: http://www.latemodelrestoration.com/iwwida.pvx?;item?item_no=YK-F88 1&comp=LRS
Axle bearings: http://www.latemodelrestoration.com/iwwida.pvx?;item?item_no=AK-1563 1&comp=LRS
Trac lock rebuild: http://www.latemodelrestoration.com/iwwida.pvx?;item?item_no=LRS-4700A 1&comp=LRS
Thats all you need.
Gears: http://www.latemodelrestoration.com/iwwida.pvx?;item?item_no=M4209F373 1&comp=LRS
Bearings: http://www.latemodelrestoration.com/iwwida.pvx?;item?item_no=YK-F88 1&comp=LRS
Axle bearings: http://www.latemodelrestoration.com/iwwida.pvx?;item?item_no=AK-1563 1&comp=LRS
Trac lock rebuild: http://www.latemodelrestoration.com/iwwida.pvx?;item?item_no=LRS-4700A 1&comp=LRS
Thats all you need.
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