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Old 02-02-2020, 12:08 PM   #1
NewBayColony
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292 3 OTT Clutch Advice

I'm finally going to put my 3 speed with a BW overdrive into my 72 C20 with a 292. I haven't bought a clutch for something like this in 40 years. Who makes a good clutch/pressure plate these days? Thanks.
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72 C20 292 3OTT
77 GMC 2500 4x4 Longstepper 350 4sp
50 3100 ex Airforce/Town of Mendon fire truck
72 GMC 1500 2wd short stepside 250 4sp
78 GMC 2500 4x Longstepper 292 4sp
54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman)
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Old 02-02-2020, 02:34 PM   #2
randy500
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Re: 292 3 OTT Clutch Advice

I have had real good luck with Luk clutches, well built and reasonably priced.
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Old 02-03-2020, 03:39 PM   #3
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Re: 292 3 OTT Clutch Advice

I would look for a local clutch shop. There are places that build clutches for big trucks that will rebuild smaller ones as well. I bought a clutch kit from a chain store for $150 ish. It was all wrong. Got turned onto a local place here in Chattanooga called Feltons Clutch. They had what I needed in stock for about $100 and turned my flywheel too. Maybe you have something local as well?
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Old 02-04-2020, 09:34 AM   #4
NewBayColony
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Re: 292 3 OTT Clutch Advice

Thanks Randy and Mark.
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72 C20 292 3OTT
77 GMC 2500 4x4 Longstepper 350 4sp
50 3100 ex Airforce/Town of Mendon fire truck
72 GMC 1500 2wd short stepside 250 4sp
78 GMC 2500 4x Longstepper 292 4sp
54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman)
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Old 02-04-2020, 01:11 PM   #5
54blackhornet
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Re: 292 3 OTT Clutch Advice

I swapped a 292 into a 68 that originally had a 250. The clutch I used didn’t last long, nor the cheap ass motor mounts available today..good luck. Tons of torque in those old 292’s
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Old 02-04-2020, 07:59 PM   #6
'68OrangeSunshine
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Re: 292 3 OTT Clutch Advice

I have a Centerforce II. 11'', between my 292 L6 and an SM465.
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Every 25 years I like to rebuild that 292, whether it needs it or not.
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Old 02-04-2020, 09:37 PM   #7
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Re: 292 3 OTT Clutch Advice

Quote:
Originally Posted by 54blackhornet View Post
I swapped a 292 into a 68 that originally had a 250. The clutch I used didn’t last long, nor the cheap ass motor mounts available today..good luck. Tons of torque in those old 292’s
Thanks!
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72 C20 292 3OTT
77 GMC 2500 4x4 Longstepper 350 4sp
50 3100 ex Airforce/Town of Mendon fire truck
72 GMC 1500 2wd short stepside 250 4sp
78 GMC 2500 4x Longstepper 292 4sp
54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman)
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Old 02-04-2020, 09:39 PM   #8
NewBayColony
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Re: 292 3 OTT Clutch Advice

Quote:
Originally Posted by '68OrangeSunshine View Post
I have a Centerforce II. 11'', between my 292 L6 and an SM465.
I was hoping you would reply. So an 11" is normal. I should have it out tomorrow. Thanks!
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72 C20 292 3OTT
77 GMC 2500 4x4 Longstepper 350 4sp
50 3100 ex Airforce/Town of Mendon fire truck
72 GMC 1500 2wd short stepside 250 4sp
78 GMC 2500 4x Longstepper 292 4sp
54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman)
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Old 02-04-2020, 11:36 PM   #9
'68OrangeSunshine
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Re: 292 3 OTT Clutch Advice

Quote:
Originally Posted by NewBayColony View Post
I was hoping you would reply. So an 11" is normal. I should have it out tomorrow. Thanks!
I think in MY '72 GM went to 12'' clutches in bigger V8s at least. [BBC].
But an 11'' is good enough unless you're getting a 454. Eleven inches was standard for the 292 and SBCs up thru MY 1971.
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Old 02-05-2020, 01:27 AM   #10
weim55
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Re: 292 3 OTT Clutch Advice

Back in the day when I was working as a mechanic and these trucks were still daily driven every clutch job I did on one I upgraded to a 12 inch regardless of the engine and drivetrain. Most fly wheels are already drilled for the larger clutches and it’s a built-in operation and just a few bucks more.

Steve weim55 Colorado
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Old 02-05-2020, 04:43 PM   #11
NewBayColony
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Re: 292 3 OTT Clutch Advice

Thanks Steve
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72 C20 292 3OTT
77 GMC 2500 4x4 Longstepper 350 4sp
50 3100 ex Airforce/Town of Mendon fire truck
72 GMC 1500 2wd short stepside 250 4sp
78 GMC 2500 4x Longstepper 292 4sp
54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman)
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Old 02-05-2020, 05:03 PM   #12
'68OrangeSunshine
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Re: 292 3 OTT Clutch Advice

If you're already running a 12'' don't downsize.
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Every 25 years I like to rebuild that 292, whether it needs it or not.
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Old 02-05-2020, 05:43 PM   #13
NewBayColony
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Re: 292 3 OTT Clutch Advice

Pulled the engine today, I'm gonna open up the bellhousing tomorrow to see what I have. I bet it's an 11.
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72 C20 292 3OTT
77 GMC 2500 4x4 Longstepper 350 4sp
50 3100 ex Airforce/Town of Mendon fire truck
72 GMC 1500 2wd short stepside 250 4sp
78 GMC 2500 4x Longstepper 292 4sp
54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman)
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Old 02-06-2020, 12:34 AM   #14
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Re: 292 3 OTT Clutch Advice

Could be. I had '64 Impala with a SHP (300 HP 327) with a close ratio 4-speed and a 3.91 posi with a 10" clutch. It would smoke the clutch before it would smoke the tires. I would have liked that 11" clutch.
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