383 w/saginaw w/4-11 rear end

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  #11  
Old 05-09-2012, 03:52 PM
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Originally Posted by camaroboy68ss
also do you remember the numbers on the side that should tell u the type and then you can find what gear ratios for each gear.

the numbers on the side are GM3925656 = 68-69 GM
52254 on the tail
and from what I remember there was no rings on the input shaft but not totally 100% on that
 
  #12  
Old 05-09-2012, 03:57 PM
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Originally Posted by Camaro 69
Might, might not. Years ago, I accidentally put in the wrong throwout bearing (never trust the guy behind the parts counter). It was a gradual slip that got progressively worse the more I drove and wore the clutch lining down, not like smoking it off the line, and it didn't give a burn smell either. If his clutch is slipping more than it's grabbing, I wouldn't expect it to create a smoke show.

The bearing I put in came with the clutch, I didnt notice any issues during the install, andthing I should look for?
 
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Old 05-09-2012, 04:14 PM
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It's clear your clutch has to be slipping, so you need to find out why.
Did you replace the pressure plate too, or is it an old worn out one?
Don't think you could have without noticing you didn't have clearance, but you don't have the clutch disc flipped?
Do you know which pressure plate you have; Borg & Beck, diaphragm, or long style?
Do you know which throwout bearing you have; long or short?
You need to use the right length bearing with the appropriate pressure plate.
If those are a mismatch, you'll end up with a clutch that wont disengage, or one that won't engage (what I think you may have going on).
For reference, here's how to tell the Saginaw transmissions apart, although which one you have has nothing to do with your slipping clutch: Saginaw Gearbox - Holdenpaedia
 
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Old 05-09-2012, 05:33 PM
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Originally Posted by Camaro 69
It's clear your clutch has to be slipping, so you need to find out why.
Did you replace the pressure plate too, or is it an old worn out one?
Don't think you could have without noticing you didn't have clearance, but you don't have the clutch disc flipped?
Do you know which pressure plate you have; Borg & Beck, diaphragm, or long style?
Do you know which throwout bearing you have; long or short?
You need to use the right length bearing with the appropriate pressure plate.
If those are a mismatch, you'll end up with a clutch that wont disengage, or one that won't engage (what I think you may have going on).
For reference, here's how to tell the Saginaw transmissions apart, although which one you have has nothing to do with your slipping clutch: Saginaw Gearbox - Holdenpaedia

Ok so I think it was a Beck clutch set that I picked up from oreillys and im pretty sure the throw out bearing is the short style, the clutch disc is in the correct way for sure and the whole clutch assembly is new, I had the flywheel re serfaced. the clutch setup looks like the attached picture.
 
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  #15  
Old 05-09-2012, 05:54 PM
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Oh jeez, I can't believe I didn't ask you the obvious question first! Did you set your free play at the clutch pedal? Pull the pedal up by hand till it stops, then lower it till you feel resistance (not force). You want 1" of free travel from the up position till you feel the pedal get tight. If your pedal is already tight, the clutch is slipping because of that. The pressure plate in the drawing by the way is a diaphragm style.
 

Last edited by Camaro 69; 05-09-2012 at 05:56 PM.
  #16  
Old 05-09-2012, 06:31 PM
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Originally Posted by Camaro 69
Oh jeez, I can't believe I didn't ask you the obvious question first! Did you set your free play at the clutch pedal? Pull the pedal up by hand till it stops, then lower it till you feel resistance (not force). You want 1" of free travel from the up position till you feel the pedal get tight. If your pedal is already tight, the clutch is slipping because of that. The pressure plate in the drawing by the way is a diaphragm style.

Ok well id say so far on my first manual install its 1-0 manual... my pedal is tight so I'm working on fixing that right now and I will let you know if that fixes it... thanks for the help by the way
 
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Old 05-14-2012, 06:10 AM
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Originally Posted by Camaro 69
Oh jeez, I can't believe I didn't ask you the obvious question first! Did you set your free play at the clutch pedal? Pull the pedal up by hand till it stops, then lower it till you feel resistance (not force). You want 1" of free travel from the up position till you feel the pedal get tight. If your pedal is already tight, the clutch is slipping because of that. The pressure plate in the drawing by the way is a diaphragm style.
Well I adjusted the clutch fork to have about an inch and a half of play and took her out... no change at all, if I wasn't stumped before I am now. So discouraged over here.
 
  #18  
Old 05-14-2012, 08:35 AM
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Slipping clutch: wrong length throwout bearing, or faulty pressure plate.
 
  #19  
Old 05-14-2012, 01:56 PM
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i think its your gear ratio in your diff...its too high...gotta get some lower gear in that rear end.
 
  #20  
Old 05-14-2012, 03:26 PM
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He's cranking 5 grand at 35 mph in 4th gear. That's not his 4:11 rear doing that.
Another thought, at that rpm your engine would be somewhat screaming. Is it, or maybe your tach is outta whack.
However, if you can feel the clutch slipping (watch the tach climb without speeding up) then that's not your tach.
 


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