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  • 1974 - 1978 Mustang II Talk & Tech

The V8 Clutch Or Lack There Of

  • Thread starter Thread starter 1948
  • Start date Start date Sep 25, 2017
1

1948

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Sep 25, 2017
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Sep 25, 2017
#1
  • Sep 25, 2017
  • #1
Hi everybody, I have a 302 in my project car, and I have a 1976 V8 4spd trans. I bought the trans a few years ago not realizing the difficulty in finding a V8 clutch kit. Unfortunately I didn't get a clutch or pressure plate when I bought it, just a really heavy flywheel, bellhousing, and trans, so I can't have something relined that I don't have. I see Summit offers a V8 clutch kit but the application is only for a 1975 ( https://www.summitracing.com/parts/zzz-mu30-1/applications/make/ford/model/mustang-ii?prefilter=1 ) Will that work? Also I have a fairly good amount of mechanical knowledge sometimes, that being said, I was thinking about the clutch assembly. With the flywheel I have, I assume Ford used that for more than just Mustang II applications, so if you have a 10 spline, 10 inch disc, wouldn't a clutch kit from say a 3spd manual Maverick work? or am I not thinking about it correctly, the engine is mostly stock, with a mild cam. Or would changing out the flywheel be an option, I see both the Maverick and Mustang II use the same flywheel? Please let me know if you have a source, or what you think. Thanks
 

LILCBRA

I wish I didn't have all of these balls in the air
Mod Dude
Dec 6, 2005
6,382
5,370
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Corn County USA
Sep 27, 2017
#2
  • Sep 27, 2017
  • #2
Hello and welcome to Stangnet!

It looks like the kit that you linked will work, but it's hard to tell. To the best of my knowledge, all V8 4 speed IIs from 75-78 used the same flywheel and clutch assembly. I believe most 10 spline 10" clutch discs will work just fine, but the pressure plate is a II specific piece. It is the only piece in that kit that would determine if it will work for a II or not. Unfortunately, the II flywheel, pressure plate, and bell housing are not interchangeable with any other Ford that I am aware of. They are a bit smaller in diameter and the flywheel uses a few less teeth on the ring gear compared to other cars. I have heard that no one reproduces a pressure plate that work for our cars anymore, but this might be an exception....? If it is, it would be GREAT news!

I have also heard of some others having their flywheel re-drilled for a larger pressure plate. I believe the early eighties 5.0 clutches can work if done this way. There is a bit more to choose from for those cars. I can't speak to that with 100% certainty though - I still run the stock II flywheel and pressure plate in my car....
 
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1948

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Sep 25, 2017
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Sep 27, 2017
#3
  • Sep 27, 2017
  • #3
Thanks for the information, I ended up finding a set up for a Granada that had the same specs as the maverick and some other Ford's that year. The kit was only $44 so if it works that's great and I'll use it without to much expectation for longevity. I'll pass on my findings.
 

jozsefsz

15 Year Member
Aug 11, 2013
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Cleveland OH Area
Sep 27, 2017
#4
  • Sep 27, 2017
  • #4
I'm glad you found what you were looking for. I'd heard (back when mustangii.net was still up) from quite a few folks that NOTHING summit linked was actually proper for the II.

For the long-term, as @LILCBRA suggests, you're looking at a more dramatic solution. T5 swap, redrilled flywheel with different-year clutch components, are probably the best bets.
 
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1948

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Sep 25, 2017
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Oct 10, 2017
#5
  • Oct 10, 2017
  • #5
The more research I do, the less hope I have. The 302 I have is a 1985, on the flywheel someone had painted it 76 Mustang "50oz" but the part number (which cannot be found anywhere in the internet) dates it as a 1976. The part number is D6ZE-6380-AA. So if the part number is correct the imbalance would be 28oz instead of the 50oz I need for the later engine, unless this is some type of aftermarket speed part which I highly doubt. Ugh I think I'm going to scrap this trans as I have these issues and haven't even figured out which starter if available will work.
 
1

1948

New Member
Sep 25, 2017
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Oct 10, 2017
#6
  • Oct 10, 2017
  • #6
Here's a picture of the flywheel
 

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LILCBRA

I wish I didn't have all of these balls in the air
Mod Dude
Dec 6, 2005
6,382
5,370
194
Corn County USA
Oct 11, 2017
#7
  • Oct 11, 2017
  • #7
It is possible that someone had the flywheel rebalanced for the 50oz engine. It's been a while since I've looked at mine, I don't remember if mine has the same larger hole at 3 o'clock in your pic. There is definitely some research that needs to be done! As for scrapping the transmission - they aren't known for holding up to a strong 302 very well. If you want to keep the manual transmission, a T5 isn't a really hard swap. Many of us have done it and can give you a rundown on what you will need to do if you choose to go that route....
 
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