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Click on image for the lowdown. 
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| | | | Joined: Apr 2006 Posts: 506 Shop Shark | | Shop Shark Joined: Apr 2006 Posts: 506 | rednate,
Your crank first appeared in 1953 in full pressure 235's....
and is used in all full pressure 235's thru 1962.
The same crank is also for the 261 engine with the same specs listed below.
The Main Bearing Journal Diameter
listed in the Motor's Truck Manual as:
No. 1 - 2.6835-2.6845"
No. 2 - 2.7145-2.7155"
No. 3 - 2.7455-2.7465"
No. 4 - 2.7765-2.7775"
Main Bearing Clearance:
.001-.003"
Main Bearing Cap Bolts torque:
100-110 Ft. Lbs.
Also, your block has a date code, if you want to narrow down the date.
-Tom
1950 Chevy 3100 w/ 1956 235
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