Topic: ring gear and clutch on 65 K code ??

[k-code]

Hi,

Replacing the ring gear on my 12/18/64 built k code coupe and wondering about the ring gear and clutch.

The car currently has a 157 tooth ring gear attached to C30E-6380B, 4L7 flywheel. Looking through Mannel's book it references a 160 tooth ring gear for that period of manufacture. Is that what the car should have, a 160 tooth ring gear? My ring gear is chewed up a bit so am replacing it.
(And is it possible to find a made in USA ring gear?)

And what clutch? Mannel references a 10" and a 10.5" but I'm not sure what was stock. I'm assuming a 10" was standard and it was possible to upgrade to the Cobra kit clutch, part C3OZ‑7A537. If a 10.5" performance clutch was optional at that time, is that the best way to go? My clutch is 10" with lots of life left but while I'm in there.....

Thanks!

[k-code]

Ok, I figured out the ring gear question. There was an eventual transition from 160 to 157 and the original starter worked with both.

Still looking for some clutch replacement guidance however.

[sgl66]

Here you go, 10 1/2 was standard for a HiPo. I never noticed before that the shop manual doesn't call out a 289 Special clutch for 65 Mustang but only 66 but they also have a 260 listed as a 65 Mustang motor so take it for what it's worth. 65 HiPo Fairlanes also used the Special clutch.  You could use a 10" clutch which is easier to push in just doesn't have the same bite as a larger clutch.

C30Z 7550-F is the disc and C30Z 7563-A is the pressure plate for a HiPo

I think the -G and -B were lighter springs than the HiPo in a 10 1/2" size

[k-code]

Here you go, 10 1/2 was standard for a HiPo. I never noticed before that the shop manual doesn't call out a 289 Special clutch for 65 Mustang but only 66 but they also have a 260 listed as a 65 Mustang motor so take it for what it's worth. 65 HiPo Fairlanes also used the Special clutch.  You could use a 10" clutch which is easier to push in just doesn't have the same bite as a larger clutch.

C30Z 7550-F is the disc and C30Z 7563-A is the pressure plate for a HiPo

I think the -G and -B were lighter springs than the HiPo in a 10 1/2" size

Excellent, very helpful. A previous owner put a 10" in mine. Can you recommend where to find correct replacements? NDP or?

[sgl66]

Excellent, very helpful. A previous owner put a 10" in mine. Can you recommend where to find correct replacements? NDP or?

I don't have any specific recommendations other than to stay away from any "heavy duty" 3 finger clutches which are more likely to bend/break your z bar.

[Texas Swede]

Schiefer has both as direct HiPo replacements and can be found on Ebay from time to time.
Their disc has the correct number of springs, 8.
Just a thought if you can/t find rebuilt ones from Ford.
Texas Swede

[RoyceP]

The 1965 Mustangs were originally available with the 260-2V V8 as an option. It was dropped early in the 1965 model year which went from April 1964 through July 1965.

Here you go, 10 1/2 was standard for a HiPo. I never noticed before that the shop manual doesn't call out a 289 Special clutch for 65 Mustang but only 66 but they also have a 260 listed as a 65 Mustang motor so take it for what it's worth. 65 HiPo Fairlanes also used the Special clutch.  You could use a 10" clutch which is easier to push in just doesn't have the same bite as a larger clutch.

C30Z 7550-F is the disc and C30Z 7563-A is the pressure plate for a HiPo

I think the -G and -B were lighter springs than the HiPo in a 10 1/2" size

[k-code]

Schiefer has both as direct HiPo replacements and can be found on Ebay from time to time.
Their disc has the correct number of springs, 8.
Just a thought if you can/t find rebuilt ones from Ford.
Texas Swede

I've definitely got a 10", 4 spring disc in there now (pressure plate/cover has eight).
So the car would have originally come with an 10.5" 8 spring disc? Never thought of Ford as a source for these parts. I'd thought they'd be long obsolete in their system.

[k-code]

I just called my local Ford dealer and he entered C30Z 7550-F and C30Z 7563-A into his system for reman availability and both came up as invalid part #'s. So doesn't appear Ford reman is an option

[Bob Gaines]

I just called my local Ford dealer and he entered C30Z 7550-F and C30Z 7563-A into his system for reman availability and both came up as invalid part #'s. So doesn't appear Ford reman is an option

That number was obsoleted decades ago. I couple years ago I had been given a number of used take off clutch assemblies . One was a 10 1/2 the rest were for bigblock. I had them rebuilt by a shop that has done that for 60 years . I sold the 10 1/2  to a forum member. If you can find a core it can be rebuilt.

[k-code]

That number was obsoleted decades ago. I couple years ago I had been given a number of used take off clutch assemblies . One was a 10 1/2 the rest were for bigblock. I had them rebuilt by a shop that has done that for 60 years . I sold the 10 1/2  to a forum member. If you can find a core it can be rebuilt.

Understood. Someone suggested Ford reman so thought I'd try. Wasn't surprised at the outcome.
I'm curious, a concours restoration doesn't require an original/correct clutch, because it's not visible? Asking for a friend.

[jwc66k]

I just called my local Ford dealer and he entered C30Z 7550-F and C30Z 7563-A into his system for reman availability and both came up as invalid part #'s. So doesn't appear Ford reman is an option

A point of reference. The third character of the Ford service number is the letter "O", as in "N", "O", "P" - not a numeric zero. The Ford guy may have corrected your error upon entry.
Jim

[J_Speegle]

............... I'm curious, a concours restoration doesn't require an original/correct clutch, because it's not visible? Asking for a friend.

Depends on what a "concours restoration" means to you or the person you may be selling to. Just like "all original" "matching numbers" and so on. Some will go as far as using NOS Ford rings and bearing in the engine while others will choose more modern parts for internals in hopes of taking advantage of modern technology. Everyone determines a line or chooses to accept someone else's the challenge is to be consistent (few are) from one area of the car to another. It's always about choices

[jwc66k]

The 1965 Mustangs were originally available with the 260-2V V8 as an option. It was dropped early in the 1965 model year which went from April 1964 through July 1965.

It's a matter of semantics. Ford released an "early 65" Mustang in April of 1964 as a combination publicity stunt, advertising gimmick and sales pitch (by the way, it worked). To identify those early Mustangs, those that are "into them" refer to them as "64 1/2" or "1964 1/2" Mustangs (I cheat and call them 64, four less key strokes). They are distinct as they all used generators instead of alternators. The two initial body styles also had a lot of unique 64 only parts, the hood for one. Three of the initial four engines offered were unique for Mustang use, a 170 CID I-6, a 260 CID V-8 2 barrel, a 289 CID low compression V-8 4 barrel and the 289 CID V-8 High Performance - the "K" code. The HP engine was in reality, a 63-64 Fairlane engine that was introduced for sale in early June for Mustangs. The 170 I-6 and 260 V-8 engines were not used in 1965 and later Mustangs. The "low compression" 289 V-8 4 barrel was replaced by a "high compression" 289 V-8 4 barrel for 1965, 66 and 67. A 289 V-8 2 barrel was introduced in 1965. The 289 "K" engine 5 bolt attaching to the bell housing block was replaced by a 6 bolt attachment in 1965, as were the other two 289 engine options.
It's also a matter of "years". We know, but we don't want to inert confusion.
See the Mannel book.
Jim

[Bob Gaines]

Understood. Someone suggested Ford reman so thought I'd try. Wasn't surprised at the outcome.
I'm curious, a concours restoration doesn't require an original/correct clutch, because it's not visible? Asking for a friend.

Depends on what a "concours restoration" means to you or the person you may be selling to. Just like "all original" "matching numbers" and so on. Some will go as far as using NOS Ford rings and bearing in the engine while others will choose more modern parts for internals in hopes of taking advantage of modern technology. Everyone determines a line or chooses to accept someone else's the challenge is to be consistent (few are) from one area of the car to another. It's always about choices

+1 .A "concours restoration" is a broad question that can mean different things to different people. This is because there are different classes with different expectations . With that said If we can't see it we can't judge it. We don't check cams for factory specs or for hipo counter balance ether. I can't imagine someone asking the question of does it have a 10 1/2 clutch and pressure plate in a concours venue. In the very unlikely situation that concours judge or enthusiast asks the question and you don't have the assemblyline assembly I would plead the fifth if you don't want the possible negative consequences.