Re: 282 waterpump

Posted by TxGoat On 2025/3/16 9:05:02

The extra hole is a water bypass. It is intended to allow some water to circulate within the block when the thermostat is closed. A '37 plate and gasket should allow the hole in the plate to line up with a non-threaded hole in the block that is just above the main water inlet in the block where the distribution tube goes. The '38 and newer blocks may have this extra bypass hole located farther above the main inlet hole in the block. The '37 bypass hole is centered about 1/2" above the inlet hole in the block. A '37 pump should line up with it on a '37 block. The shop manual has some service text and pictures on the various pumps used that might be helpful. The service manuals for the '37 and '38 cars are available in the Literature Archive on this site. Be sure you are looking at the right material for your car's year and model.