Changed my Speedo gear today....no wonder I never got a ticket

[Roland69]

I was in the mood to work on something lol. I swapped out the gear only took like 10 minutes (including jacking the car and puting in axle stands) I took the 17 tooth white gear out and the thing look like new I was expecting it to be all chewed up. Anyway's I put the black 20 tooth in and greased the U-joints while I was under there and looked a few things over. I also marked the D/S and spun the tire 360* and made sure the D/S spun 3.55 times and it did.

Took the car for a ride and WOW I might get a ticket now lol. Before the speedo gear swap at 2000 RPM's the speedo said I was doing 100 KPH (60 MPH) and now with the proper gear at 2000 RPM's I am doing about 88-90 KPH. I always new it was out but didn't think it would be that much.


Anyone need a 17 tooth white speedo gear......

 

[poneypower89]

and ull probably be driving it even harder cuz the needle will be moving slower

 

[Roland69]

lol probly

 

[91ghp5.0]

i need to switch mine out, but i dont know what i would need. 17 inch wheels and 3.73's.

 

[Roland69]

how much taller do the 17" tires measure than the 15" tires....are they close

 

[carbed87]

if it's steeda, then yes, you need white. i just did one on my friends 94 with 3:73's and tribars (and it called for the "white one" from steeda, though i think it may have been a 23 tooth, or mabye im just a senial old man)

 

[Reed]

AOD '90 and up need white 23 tooth driven gear.

http://www.angelfire.com/theforce/5ohcpa/cpa5ohtech025.htm

 

[795.0pacecar]

i need to switch mine out, but i dont know what i would need. 17 inch wheels and 3.73's.

Stock T5 should use a 21 tooth gear. I think its red.

 

[Roland69]

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

 

[rdharper02]

Rol: you didnt get pulled over because you didnt have 20 inch rims and a ship date to boot camp...lol

 

[Roland69]

True dat

 

[Roland69]

My ride be sittin on them hundred spokes.....wood grain interior all leather and chrome

 

[88 Fox GT]

i need to switch mine out, but i dont know what i would need. 17 inch wheels and 3.73's.

All has to do with tire height, not wheel size. You will probably need the 21 tooth gear, as mentioned by 795.0pacecar.

 

[91ghp5.0]

All has to do with tire height, not wheel size. You will probably need the 21 tooth gear, as mentioned by 795.0pacecar.

245/45/17's baby...all four corners.

 

[Strype]

Crap I just bought 3.73's for my 93 Coupe... factory t-5... do I use the white or yellow Roland???

 

[88 Fox GT]

245/45/17's baby...all four corners.

According to this calculator thing, that's a 25.68" tire height, which is close to stock.