SPEEDOMETER DRIVE GEAR CHART
T-5 TRANSMISSION DRIVE GEARS
DRIVEN GEAR CALCULATIONS
Another method to determine what
driven gear you need, can be done with
this formula:
TEETH #
COLOR
AXLE RATIO
PART #
6T
White
2.73:1
E3ZZ-B
7T
Yellow
3.08:1
E3ZZ-A
8T
Green
3.27:1
F0ZZ-A (1990-95 only, 1986-89 use 6T)
DGT x AR x TRPM
1,000
TEETH #
COLOR
AXLE RATIO
PART #
DRIVE GEAR
DGT = drive gear teeth, AR = axle ratio,
and TPRM equals Tire Revolutions Per
Mile (a stock P225/60VR15 will rotate
815 times per mile)
16
Wine
2.73:1/3.27:1
CODZ
6T/7T/8T
Thus,
17
White
3.45:1/3.55:1
C3DZ-G
6T/7T
18
Yellow
3.08:1/3.73:1
COCD-B
6T
19
Pink
3.27:1
CODZ-B
7T
20
Black
3.08:1/4.10:1
C1DZ-A
7T/8T
21
Red
3.27:1/3.27:1/4.30:1
C40Z-A
6T/7T/8T
MANUAL TRANSMISSION DRIVEN GEARS
7 x 3.73 x 815
1,000
driven gear teeth (rounded to the nearest
whole number, 21). So you would pick
the gear with 21 teeth.
AUTO TRANSMISSION DRIVEN GEARS
TEETH #
COLOR
AXLE RATIO
PART #
DRIVE GEAR
16
Blue
3.27:1
DDAZ-A
6T
17
Green
3.45:1/3.55:1
C7SA-A
6T
18
Gray
3.08:1/3.73:1
C7SZ-B*
6T/7T
19
Tan
3.27:1
C7VY-A
7T
20
Orange
3.08:1/3.45:1/3.55:1/4.10:1
C8SZ-B
7T/8T
21
Purple
3.27:1/3.73:1/4.30:1
D00Z-B
6T/7T/8T
*Discontinued through Ford
SOURCES
AMSOIL INC.
925 Tower Ave.
Superior, WI 54880
(800) 956-5695
www.amsoil.com
FEDERAL MOGUL CORPORATION
26555 Northwestern Hwy.
Southfield, MI 48033
(248) 354-7700
www.federalmogul.com
DaSILVA RACING
960 Brock Rd.
Pickering, ON Canada L1W 2A1
(905) 837-7700
www.mustangtoystore.com
Issue 9 FOX Mustang Magazine 67