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Old 03-05-2012, 08:01 PM
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New Clutch Recommendation (sm-465)

Putting together a 350 (.040 over), starting this week, with a muncie SM-465 4spd in a C-10. I have had an oil leak at the rear of the engine (305) since I got the truck and will probably need to go ahead and replace the clutch since it's all going to be apart anyway.
Looking a for a recommendation for another 11" clutch kit. Will the $120 clutch kit from the autoparts store be ok or should I pay for a better stuff? And how much more? AC Delco has a basic clutch kit for just over 100.
I think this engine should come out in the 250 hp/300 lb. ft. torque ballpark.


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Old 03-06-2012, 05:32 PM
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The new OEM clutch kit should serve you well, if by "better" you mean one of the racing clutch kits I wouldn't use them for everyday street use. 1. Most have high pedal effort 2. Most have the marcell segments taken out of the disc (these are the wavy metal pieces between the lining), this makes it dufficult to get a smooth engagement, they're more for on or off racing apps. Most have very heavy dampner springs in the disc center, this can cause a funny 'chatter' sound under certain load conditions. I've installed several of these High perf. clutches at customer request and generally didn't like the driving experience with them. (IMO)

LUK, Sachs or Exedy package nice kits, you'll find that many times the components in the different kits come from the same source

Last edited by regguy1; 03-06-2012 at 05:38 PM.
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