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Labor Day Putting down your wrenches or time for
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#44609 01/31/2005 5:05 PM | Joined: Jan 2005 Posts: 310 Shop Shark | | Shop Shark Joined: Jan 2005 Posts: 310 | This weekend I picked up a completely disassembled 235. One of the P.O.'s started a rebuild on it. All of the machine work is already done. The only problem is that none of the bearings (except cam) or rings were included. I need to know the original specs for cylinder bore and crankshaft journal sizes so I know what bearings, etc to buy. Does anybody have a source for these specs? TIA 
-Tim
'51 Chevy 3104 w/'56 235, 848 Head, HEI Dizzy, Corvette Cam, Split Manifold and Dual Carter YF's
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#44610 01/31/2005 5:24 PM | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | 235 specifications (from 1960 manual)
General
Bore 3 9/16"
Stroke 3 15/16"
Compression ratio 8.25:1
Horsepower 135 @ 4000 rpm.
Compression (cranking) 130 psi (min.)
Torque, Lbs
Cylinder head 95
Mains 105
Rods 40
Flywheel 60
Rocker arm 30
Bell housing 50
Rods & Mains
Rod diameter 2.311"
Mains ”
#1 2.6835-2.6845"
#2 2.7145-2.7144"
#3 2.7455-2.7465"
#4 2.7765-2.7775"
Crank end play .003-.011"
Rod side clearance .005-.012"
Rear seal diameter 3.875"
HEAD
Valve spring 65 lbs @ 1.844" + / - 10 lbs.
Hydraulic lifter 1 1/2 turns.
Solid lifters .006" in .016" exh.
Intake guide height 1"
Exhaust " " 15/16"
CAM
Cam gear run out .004" max
Crank gear " " .003" max
Backlash .004"-.006"
End play .001-.005"
Piston & Rings
Piston clearance .0006-.001"
Ring end gap .007"-.017"
Oil ring rails gap .015-.055"
Ring clearance in groove .002-.004"
Ring clearance in groove .000-.008" (oil)
Flywheel
Run out .008" max
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#44611 01/31/2005 5:57 PM | Joined: Jan 2005 Posts: 310 Shop Shark | | Shop Shark Joined: Jan 2005 Posts: 310 | Just what I needed!!! Thanks a million, Dave!!
-Tim
'51 Chevy 3104 w/'56 235, 848 Head, HEI Dizzy, Corvette Cam, Split Manifold and Dual Carter YF's
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