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Old 08-05-2010, 04:53 PM   #1
roundvalley
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Default 3789733 Chevy flywheel

I have a 168 tooth, 14" Chevy flywheel #3789733. A 10.5" pressure plate will not bolt to it. I am guessing it is for a big block. ??

What flywheel do I need for a Ram 401 pressure plate 10.5", 168 tooth, SBC 350??

Did they make a 14" flywheel 168 tooth with a two different pressure plate bolt patterns??

Can't find the answer searching.
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Old 08-05-2010, 09:50 PM   #2
roundvalley
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Default Re: 3789733 Chevy flywheel

How about a 3991469 or a 3986390?? Anyone know the difference?

Someone must have solved this with a SBC to earlyFord tranny. Offy adapter.
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Old 08-05-2010, 11:20 PM   #3
Deuce Roadster
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Default Re: 3789733 Chevy flywheel

I used a 1950 Mercury pressure plate. That is what Wilcap says to use also
The bolt pattern on the 50 Mercury pressure plate is 6 evenly spaced holes and bolted to my 1957 Chevrolet 168 tooth flywheel.



Used a stock Ford clutch disc.
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Old 08-06-2010, 07:32 AM   #4
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Default Re: 3789733 Chevy flywheel

"378" numbers were used up to about 1964 so I doubt that it is for a big block unless it was for a "W" engine.
I think all the Chevy 168 tooth flywheels used 11" clutches.
The only GM dual pattern flywheels I've seen are for the later '86 & up cranks.
There may be aftermarket flywheels with dual patterns.
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Old 08-06-2010, 06:02 PM   #5
Chevy55
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Default Re: 3789733 Chevy flywheel

Aftermarket flywheels for Chevys come dual drilled for both clutches. Watch ebay for one or get ready to spend $200 plus for one. I do have a gm 168 tooth that is drilled for the 10.5 clutch 3728004 but I have no idea what it is off of.
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Old 08-06-2010, 07:38 PM   #6
chucky stampfle
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Default Re: 3789733 Chevy flywheel

My 57 chevy has a 168 tooth fly wheel for a 10.5 inch clutch
try 55-7 chevys
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