Ford engine code decode and ID

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Ford and Mustang carburetors

Cooling and fans

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Vintage Ford and Mustang intake manifolds

Ford engines pistons and rods

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Ford Vintage smog setups

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Ford Bell housings casting ID

Ford and Mustang flywheels ID

Ford third member differentials identification

Ford driveshafts

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Ford 4 speed toploader transmissions ID decoding

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Ford and Mustang C6 transmissions ID decode

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Ford and Mustang 3 and 4 speed Shifters

Toploader speed calculator

 

 

Vintage Ford library and publications

Ford casting and date Decoder ID

Side by side Ford parts

 

Mustangtek Differential and  Transmission Ratio Calculator

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FORD and Mustang Flywheels

FYI: Ford Flywheels often have 2 numbers. One number is casted and the other is stamped. Most often the only visible numbers found is the casting number (usually 6380) and in turn most often used by us hobbyists. However the casting number (6380) is not referenced at Ford. It is possible the casting number (6380) is only the part number for the flywheel (with out the Ring Gear). For the complete flywheel assembly (with Ring Gear) Ford uses part 6375 part number but this number is not often stamped/cast on the actual flywheel. The stamped numbers is the one referred to in Ford Master Parts Catalog.

Confused, well you're not alone. Just remember that any of the 2 numbers may be commonly used to describe a particular flywheel.

C3OE-6380-B

 

Ok289 Small Block w/MT

 

10" or 10.5" Clutch

157 tooth ring gear

Ford Service Part Number ID C3OZ-6375-C

C3OE-6380-B

289 HIPO

Ok64-66 289 Hipo

(Balanced specific to Hipo motor)

10" or 10.5" Clutch

157 tooth ring gear

Orange dab in rear

Ford Service Part Number ID C3OZ-6375-C

C3OE-6380-B

289 HIPO

Ok289 Hipo

 

10.5" Clutch

160 tooth ring gear

 

Ford Service Part Number ID C3OZ-6375-C

C5AE-6380-C

 

?Small Block MT

Manual

164 Tooth ring gear

C5AE-6380-A

C7TE-A (stamp)

Ok66-68 289 Bronco 11"clutch

Ok69 302 Bronco MT

Ok69-71 302 Ford w/11"clutch MT

Ok69+ 351W 351C 351CJ w/MT

 

12 3/8" PP bolt circle

164 Tooth ring gear

Ford Service Part Number ID C6TZ-6375-C

C5AE-6380-E

C7AE-A (stamp)

Ok65-66 289 Ford Fairlane (2v) 3_4sp

Ok65 289 Fairlane (4v) 3_4sp MT

Ok66 Bronco (2v) 10"clutch

Ok67-68 289 Falcon (2v) 3_4sp 10"clutch

Ok68-71 302 Ford (2v) 3_or_4SP

Ok68 302 Fairlane Mustang Falcon (2v 4v) 3_or_4SP

10" or 10.5" Clutch

11 3/8" PP bolt circle

164 Tooth ring gear

Ford Service Part Number ID C5AZ-6375-S

C5AE-6380-E

C6AE-6375-B

428 CJ SCJ

Ok66-68 410 428 Ford PC MT

Okearly 68 428CJ Mustang

184 Tooth ring gear

Ford Service Part Number ID C6AZ-6375-A

C6AE-6380-B

 

Ok66-68 428 Ford PC MT

14 23/64" diameter

12 7/8" PP bolt circle

184 Tooth ring gear

Ford Service Part Number ID C6AZ-6375-A

C6AE-6380-C

C7TE-B

?6cyl-300 Truck

 

11" Clutch

164 Tooth ring gear

0 oz balanced

C6AE-6380-C

C6ZE-6380-A

C7ZE-B (stamp)

Ok65-66 289 Mustang Falcon (2v) 3_4sp MT

Ok65-67 289 Mustang Falcon (4v) 3_4sp MT

Ok67-68 289 Mustang (2v) 3_4sp MT

Ok71 302 Maverick MT

11 3/8" PP bolt circle

10" Clutch

157 Tooth ring gear

Ford Service Part Number ID C3AZ-6375-J

C7OE-A (stamp ?)

289 HIPO

Ok?65 289 Hipo Fairlane MT

11 3/8" PP bolt circle

164 Tooth ring gear

Ford Service Part Number ID C5OZ-6375-B

C7OE-B (stamp)

Ok?64 260 Mustang 2_4sp MT

11 3/8" PP bolt circle

157 Tooth ring gear

Ford Service Part Number ID C4OZ-6375-D

C7ZE-A (stamp ?)

289 HIPO

Ok65-67 289 Hipo Mustang MT

11 3/8" PP bolt circle

157 Tooth ring gear

Ford Service Part Number ID C7OZ-6375-E

C8OE-6375-A

C8OE-A (stamp)

428 CJ SCJ

Certified68-70 428CJ Fairlane/Torino Mustang MT

 

14 15/64" diameter

12 7/8" PP bolt circle

11.5" Clutch

184 Tooth ring gear

Ford Service Part Number ID C8OZ-6375-A

C9AE-6380-C

Boss 429

Ok69-70 Boss 429 Mustang

Ok70-71 429CJ & SCJ Mustang Torino MT

12 7/8" outer bolt circle

11" or 11.5" Clutch

176 Tooth ring gear

Ford Service Part Number ID C9AZ-6375-C

C9AE-6380-C

C9AE-6384-A

C9AE-A (stamp)

 

Ok69-70 429 Ford Torino (exc/CJ & SCJ) MT

15 3/8" diameter

12 7/8" PP bolt circle

176 Tooth ring gear

Ford Service Part Number ID C9AZ-6375-A

C9ZE-A (stamp)

428 CJ SCJ

Certified69-70 428SCJ Torino Mustang MT

 

14 15/64" diameter

12 7/8" PP bolt circle

11.5" Clutch

184 Tooth ring gear

Ford Service Part Number ID C9ZZ-6375-A

C9ZE-A

C9ZE-8375-B

C9ZE-D(stamp)

Boss 302

Ok69-70 Mustang BOSS 302

10 1/2" clutch

164 Tooth ring gear

 

C9ZE-8375-C

Boss 302

Ok69-70 Mustang BOSS 302

11 3/8" PP bolt circle

10 1/2" clutch

164 Tooth ring gear

Ford Service Part Number ID C9ZZ-6375-B

D1ZX-6380-AA

BOSS 351 Mustang

Ok71 BOSS 351 Mustang MT

 

164 Tooth ring gear

10.5 inch clutch

28 oz counterweight

Ford Service Part Number ID D1ZZ-6375-B

Application

legend

  Shelby Mustang 289 HIPO 428 CJ SCJ Boss 429 BOSS 351 Mustang Boss 302 427

Certified Confirmed App

Ok Unconfirmed App

? Unknown App