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| | | Joined: Mar 2008 Posts: 127 Shop Shark | | Shop Shark Joined: Mar 2008 Posts: 127 | Is an 11 inch clutch big enough for a two ton truck? My truck was recently overloaded and I ended up burning out the clutch at the landfill. The two speed rear end is stuck in high, which didn't help. I went in to replace it and was surprised to find that it was only an 11 inch clutch with 6 bolts holding down the pressure plate. I was expecting a 12 or 14 inch clutch. I suspected the engine and tranny had been swapped and ran the casting number on the block (3769925) and came up with a 59' 261 engine. At least it's a truck engine, but I still think the clutch is too small. Am I correct in thinking this?
Glory Bound...
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | manual says 11", 13" for biggest trucks Bill | | | | | Joined: Mar 2008 Posts: 127 Shop Shark | | Shop Shark Joined: Mar 2008 Posts: 127 |
Glory Bound...
| | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | If he has a 261 is 11" the largest clutch that fits?
Those bigger model trucks would have a V8 with a larger flywheel to fit a 13" clutch right? | | | | | Joined: Mar 2004 Posts: 6,214 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,214 | The 261 was the standard issue engine for the 6000 series trucks in 1957, the 283 V8 was optional. The clutch was an 11" diaphram spring with a 11"coil spring type optional. The 13" clutch was only used on the 9000 and 10000 series 2-1/2 ton trucks. Mike B  | | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | Mike, what engines came with the 13" clutch? I don't know but suspect it won't fit on the normal 235 and 261 flywheel or in the bell housing? Wouldn't be surprised if there were a larger heavy duty flywheel and bellhousing, I just haven't heard of it for the Chevy 6 cyl.
| | | | | Joined: Mar 2004 Posts: 6,214 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,214 | Grigg, The 13" clutch in 1956/57 was used with the 322 Nail Head only, it was the only engine available in the 9000 & 10000 series trucks. All of the smaller series trucks had true Chevrolet engines. Mike B | | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | Thanks Mike.
So as I suspected 11" is the "big" clutch for a stove bolt 6. | | | | | Joined: Mar 2004 Posts: 6,214 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,214 | The 11" Clutch with the Coil Spring Pressure Plate is the "big" set-up for the 6's and V8's... Mike B | | |
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