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Jul 21st, 2025 | | | | Joined: Oct 2010 Posts: 197 'Bolter | | 'Bolter Joined: Oct 2010 Posts: 197 | Is the clutch release bearing the same for either a 3 speed or a 4 speed?
My pickup has a Muncie SM420 that I am looking for the proper clutch release bearing.
Walt
Longmont, Co.
Last edited by klhansen; 08/09/2025 3:38 PM. Reason: fixed title spelling
| | | | | Joined: Jan 2022 Posts: 1,987 'Bolter | | 'Bolter Joined: Jan 2022 Posts: 1,987 | You don't state year, make or model of your pickup, but just in case, the 1939-53 GMC Master Parts Book calls for the same clutch release bearing for all 1/2 ton thru 2 ton trucks no matter which transmission. Part number is 909422. Same part number is listed in the 1929-54 Chevrolet Master Parts Catalog for "all" 1938-54.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
| | | | | Joined: Jan 2022 Posts: 1,987 'Bolter | | 'Bolter Joined: Jan 2022 Posts: 1,987 | National 614037. RockAuto has it for $41.79
Also SKF N1086SA and Timken 614037.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
| | | | | Joined: Jun 2022 Posts: 530 'Bolter | | 'Bolter Joined: Jun 2022 Posts: 530 | Beware... the bearing they stick in a "clutch kit" is usually an offshore piece of junk. Get one of the above suggested bearings. I hate having to pull a transmission because the throwout bearing has failed.
~~ Jethro 1954 3100Back to LifeIn the Dity Gallery1951 3100 (gone) / 1956 4400 (still in the neighborhood) / 1957 6400 with dump body (retired) / 1959 3100 panel (in the woods junked) / 1978 Custom Deluxe K10 / 1993 S-10 4.3 / 2004 Chevy Crew Cab / 1945 John Deere H / 1952 John Deere B / 1966 John Deere 2510 / 1967 John Deere 1020 | | |
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