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Apr 6, 2009 | 12:44 PM

Blackwaterforge

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Joined: Feb 2005

Posts: 468

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From: Alabama

Clutch

Dose anyone know the diamiter of a clutch for a 66 F-250 with a 300 six and a 4-speed?
Thank You!

Apr 6, 2009 | 06:59 PM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

Posts: 88,826

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From: Simi Valley, CA

Quote:

Originally Posted by Blackwaterforge

Dose anyone know the diamiter of a clutch for a 66 F-250 with a 300 six and a 4-speed?
Thank You!

1965/72 F100/350 240/300 I-6: 11 inch.

Apr 7, 2009 | 07:01 AM

Blackwaterforge

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Senior User

Joined: Feb 2005

Posts: 468

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From: Alabama

Thanks!

Thanks N.D.
Parts truck has new clutch but it is a ten inch.

Apr 7, 2009 | 07:24 AM

Blackwaterforge

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Senior User

Joined: Feb 2005

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From: Alabama

Number Dummy

In the parts catalog it list a flywheel for a 65-72 240/300 as 6384. Mine is stamped C6AT-6380. Is this the wrong flywheel or did the number change?
Thank You for all your help!
The parts CD you suggested has been very helpful!
Russell

Apr 7, 2009 | 08:29 AM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

Posts: 88,826

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From: Simi Valley, CA

Quote:

Originally Posted by Blackwaterforge

In the parts catalog it list a flywheel for a 65-72 240/300 as 6384. Mine is stamped C6AT-6380.

Is this the wrong flywheel or did the number change?

C6AT-6380 is a partial ID number off the flywheel itself, but you are missing the suffix.

It is C6AT-6380-E? If so, the flywheel ring gear has 168 teeth.

Ford replaced the 168 toothed flywheel with a 164 toothed flywheel many years before the final edition of the parts catalog was printed (what the CD was scanned from).

So that ID number of C6AT-6380-E will not be found in the CD.

How do I know this? Besides the CD, I have an original paper catalog printed in 1967, and another catalog on microfiche from 1968.

ID number: C6AT-6380-E originally translated to Ford part number: C5TZ-6375-L.

C5TZ-6375-L was replaced by: C5TZ-6375-P.
---------------------------------------------
6384 is the basic part number for a flywheel ring gear.

6375 is the basic part number for a flywheel or flexplate.

When you look at the flywheel's basic part number of 6375, Ford also lists the ID number for each one.

But....because this number you posted is so old and was replaced, it's not listed.

Apr 8, 2009 | 12:17 AM

unibody madness

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Joined: Apr 2009

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From: vallejo,california

help with clutch

my son has a 61 step-223-4speed
i have a 61 uni-292-3 speed
and 61 uni 223-3 speed
the first two have 11 inch clutchs,dont know about the third..
luk and some others show a twelve inch
what should it be and where can i find them made in U.S. without taking out a second morgage(I need all three)

just joined plese send mail under clutch

Apr 8, 2009 | 03:42 AM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

Posts: 88,826

Likes: 787

From: Simi Valley, CA

Quote:

Originally Posted by unibody madness

my son has a 61 step-223-4speed
i have a 61 uni-292-3 speed and 61 uni 223-3 speed
the first two have 11 inch clutches, dont know about the third..
luk and some others show a twelve inch
what should it be and where can i find them made in U.S. without taking out a second morgage (I need all three)

just joined plese send mail under clutch

Welcome to FTE

I'm posting the info here so others can take advantage of it.

There were two different sized clutches used on 1961/64 F100/250's: 10 & 11 inch.

The 10 inch was standard equipment on 1961/64 F100/250's with the 3 speed manual.

The 11 inch was optional on 1961/64 F100/250's with the 3 speed manual, standard equipment with the 4 speed manual.

1961/64 F350's came standard with the 11 inch clutch, the 12 inch clutch was optional, also used on F500/750's.
-------------------------------------------------------------------------------------------------------------
B7C7550A .. Clutch Disc / 10 inch, 10 splines

C1AZ7563A .. Pressure Plate / Use with 10 inch clutch.

Original application: 1961/64 F100/250 223 & 262 I-6's / 292 2V.

Use with 3 speed manual transmission.
-------------------------------------
COTT7550A .. Clutch Disc / 11 inch, 10 splines.

COTT7563A .. Pressure Plate / Use with 11 inch clutch.

Original application: 1961/64 F100/350 223 & 262 I-6's / 292 2V.

Use with 3 speed or 4 speed transmissions.
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Info sources: 1957/63 & 1964/72 Ford Truck Parts Catalogs.