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Go Back   Corvette Action Center > 1968 - 1982 Corvettes > C3 Technical and Performance


C3 Technical and Performance For technical and performance related discussion of 1968 - 1982 Corvettes.

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Old 03-24-07, 09:54 AM   #1 (permalink)
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jims427400 is offline
 
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Join Date: Jun 2005
Location: Perrysburg,Ohio
Posts: 616
My Corvette(s):
1967 427 tripower,1968 427 tripower vert,2004 Z16
Default Clutch type and size for the 68 ??

Just want to get a confirmation on the diameter of clutch I need.
With the car sitting as long as it has I'd like to pull the trans and replace the clutch and check the flywheel.
What brand and size have you big blockers used ?? Its for a 427 x 400hp
I've been buying parts from Paragon,Zip and Corvette central, they all have different brands and diameters..
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Old 03-24-07, 11:22 AM   #2 (permalink)
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sunger is offline
 
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1968 427 convertable
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I am looking forward to the answers you get Jim because replacing the clutch is on my iist of things to do this summer. I want to put in something that I don't need to worry about doing again in 4 or 5 years.
Keep up the good questions.
Steve
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Old 03-24-07, 08:24 PM   #3 (permalink)
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'67 Marina Blue Convertible
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It was originally built with a 14" diameter 168-tooth flywheel and an 11" clutch with a 10-spline input shaft. Check with Paragon, but I believe the clutch packages they sell are made by LuK - they're excellent (LuK is the world's largest OEM clutch manufacturer). Be sure and have the flywheel resurfaced and use a new pilot bushing.

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Old 03-24-07, 09:37 PM   #4 (permalink)
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My Corvette(s):
1967 427 tripower,1968 427 tripower vert,2004 Z16
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Thanks JohnZ,
I was hoping you'd have time to help me out..
Just cureous though,what resource do you use to go back and pull information for all of us? Glad you have it..
Thanks Again..
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Old 03-25-07, 07:38 PM   #5 (permalink)
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1969,1972,1975
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You may also want to see if you have a local clutch rebuilder in your area. I have one near me and he sold Luk as well as others and will face the flywheel. I think it was $35 to face and install a new ring gear. I used a Hays clutch over some of the other "hotrod" ones and it has held up good. If I knew the local shop stocked the Luk I could have saved $100-$150 over the speed part catalogs price.
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Gary
GTR1999
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Old 03-26-07, 03:44 PM   #6 (permalink)
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Join Date: Oct 2003
Location: Houston Texas
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My Corvette(s):
1968 Convertible - Candy Apple - 427/475+
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Try a CenterForce street/strip clutch if your looking for a new replacement. I put one on my 427 and love it!
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Old 03-27-07, 04:23 PM   #7 (permalink)
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Quote:
Originally Posted by jims427400 View Post
Thanks JohnZ,
I was hoping you'd have time to help me out..
Just cureous though,what resource do you use to go back and pull information for all of us? Glad you have it..
Thanks Again..
About 40 years' worth of GM references and my own notes from my body-off restorations, project car builds, and many other different sources; the trick is keeping it organized for retrieval .
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