Are there vortec head castings that fit 1982 305 SBC that's currently running cylinder head casting no's 333882?
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Asked in Commercial Vehicles
Where is the thermostat on a Detroit 8v53?
There are actually two. Look at the end of your engine with the belts on it - this would normally be the front of the engine, but if the belt end is pointing at the back of your boat, then it would be logical to think that's the back. Anyway...there's a casting bolted to that end of each cylinder head with a pipe running between them. Remove the belts and those castings, and you'll see the thermostats. Fair warning: they are about $60 apiece, not counting the gasket, and you need to replace both.