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Jul 21st, 2025 | | | | Joined: Feb 2010 Posts: 43 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2010 Posts: 43 | Hello all , just pulled my 3 speed gearbox out of my 51 Burb , only to find that the clutch mainshaft is different than the one i have rebuilt ready to fit !! My original has the clutch spines the whole length of the shaft , however my rebuilt unit has a shorter length of splines , Other than that is looks exactly tyhe same any ideas ?? will it cause me any issues if i fit it ?? any sugestions appreciated
Thanks .
i dont mind getting older , i just dont want to grow up !!!
| | | | | Joined: May 2001 Posts: 7,440 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,440 | I think the one with less length to the splines came from a Task Force series trucks. I don't see any problem with using it. | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 |
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Feb 2010 Posts: 43 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2010 Posts: 43 | Many thanks for you advice , i have been wondering why the different length of splined shaft? , and for what reason? i now feel happier to fit it
Thanks again Lez
i dont mind getting older , i just dont want to grow up !!!
| | | | | Joined: Apr 2005 Posts: 2,066 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,066 | My understanding is that clutch gears with shorter splines are OEM and the ones with the full splines were aftermarket. In which case the aftermarket parts would be presumably stronger. I don't have any evidence to support this claim however.
Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
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