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08-26-2020, 09:09 PM | #1 |
Senior Member
Join Date: Jul 2011
Location: Oakland County, Michigan
Posts: 562
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Clutch Recommendation
I'm working on building an engine for my '51 Crestliner. It will have a 4-inch crank, a mild overbore, probably EAB heads for an extra shot of compression and an Isky 1007B camshaft. I will also run it with overdrive. Will the stock, 9.5-inch clutch be able to handle the extra torque of this setup or should I plan on getting a larger clutch? If something bigger is recommended, what style/size should I look for?
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08-26-2020, 09:31 PM | #2 |
Senior Member
Join Date: May 2010
Location: Coral Springs FL
Posts: 10,923
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Re: Clutch Recommendation
I had a 10 in clutch in my 40 with a 296 flatty.
Worked fine. I didn't abuse it. 9.5 will also work fine. All depends how you drive it. |
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08-26-2020, 09:41 PM | #3 | |
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Join Date: Nov 2012
Location: Wichita KS
Posts: 16,132
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Re: Clutch Recommendation
Quote:
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08-26-2020, 11:14 PM | #4 |
Senior Member
Join Date: Jan 2011
Location: sw minnesota
Posts: 4,567
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Re: Clutch Recommendation
9" long style clutch in my 59a with merc crank and a columbia slips if i floor it. i believe on your 8ba flywheel, a borg an beck diaphragm style is used, and perhaps has better grabbing power? so a 9 1/2 " would work?
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08-27-2020, 02:49 AM | #5 |
Senior Member
Join Date: Jul 2011
Location: Deerfield N.H.
Posts: 294
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Re: Clutch Recommendation
Fort Wayne Clutch get 9" with heavy duty springs. Call them and talk to Kerry. He is very familiar with this. I have this set up in my Panel. Works great.
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08-27-2020, 09:11 AM | #6 |
Senior Member
Join Date: Jul 2011
Location: Oakland County, Michigan
Posts: 562
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Re: Clutch Recommendation
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08-27-2020, 01:10 PM | #7 |
Senior Member
Join Date: Mar 2011
Location: upstate NY
Posts: 478
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Re: Clutch Recommendation
Here's some info from The late "Rumbleseat", aka Paul Garrigan.
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08-27-2020, 01:20 PM | #8 |
Senior Member
Join Date: Mar 2011
Location: upstate NY
Posts: 478
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Re: Clutch Recommendation
Based on Paul Garrigans article. I went down to a 9 inch clutch and lightened the flywheel by 7 to 8 lbs. to lower the rotating mass. Since I'm I going by seat of pants feeling from last year, I can't say it greatly improved the motor from spooling up quicker. However, I do not have any slippage with the smaller clutch.
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08-27-2020, 03:45 PM | #9 |
Senior Member
Join Date: Jul 2011
Location: Oakland County, Michigan
Posts: 562
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Re: Clutch Recommendation
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