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05-20-2019, 09:25 PM
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#1 |
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Senior Member
 Join Date: Aug 2003
Location: Conyers,Ga.
Posts: 7,288
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Clutch size for 71 C30 w/Big Block?
I’m not sure but I don’t think my clutch has ever been changed in my 1 ton. It’s a 71 factory 402/4 speed. What size should the clutch be? Trying to get a clutch and pressure plate kit before I remove this one. Thanks in advance.
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05-20-2019, 09:59 PM
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#2 |
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All about them K’s
 
Join Date: Jun 2014
Location: Land of Entrapment
Posts: 6,487
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Re: Clutch size for 71 C30 w/Big Block?
I would think a 12”. That’s what was in my K20 when I tore it down.
__________________
Tyler '57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888 '72 K20 Cheyenne: 5” lift, 35’s, front dana 60 blah blah blah… http://67-72chevytrucks.com/vboard/s...d.php?t=662879 ‘69 K10 SWB: 4” lift 33”s… in a million pieces http://67-72chevytrucks.com/vboard/s...d.php?t=805206 '98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 35x12.5x20’s |
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05-20-2019, 10:02 PM
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#3 |
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Senior Member
Join Date: Aug 2003
Location: Conyers,Ga.
Posts: 7,288
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Re: Clutch size for 71 C30 w/Big Block?
10-4. Are all v-8 flywheels same also?
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05-20-2019, 11:35 PM
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#4 |
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Registered User
Join Date: Sep 2018
Location: Springfield Oregon
Posts: 112
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Re: Clutch size for 71 C30 w/Big Block?
I had a 1970 C30 with a big block 402. It had a 12" 3 finger clutch. In that era, there are 168T & 153T flywheels. Big blocks will have the 168T. If you have a 454 it will have an externally balanced flywheel also.
__________________
1972 Cheyenne Super SWB 2wd 402 Orange & White 1971 Cheyenne 3/4 4wd Black & White 1972 Cheyenne Super 1/2 LWB 2wd 402 Red & White 1968 Chevelle SS 396 L78 |
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