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| | | Forums66 Topics128,162 Posts1,057,065 Members48,463 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Apr 2011 Posts: 14 New Guy | | New Guy Joined: Apr 2011 Posts: 14 | I hate to ask this but can someone tell me the bolt sizes that mount water pump and thermostat housing to the motor? Also will a thermostat housing from a 235 also fit a 216? I have someone that has a 235 housing, but he's not sure it will fit on 216 head. Thanks! | | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | I can tell you the mounting pattern for the thermostat housing is the same.
As far as bolt size for the pump, they all use 3/8" bolts, but the length varies depending on what year you have.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Apr 2011 Posts: 14 New Guy | | New Guy Joined: Apr 2011 Posts: 14 | its a 50 216 block. I have one bolt, but missing the other 2 on water pump and none for housing.
Last edited by 46chevytruckinga; 05/05/2011 7:51 PM.
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