Please help me identify my engine!
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Please help me identify my engine!
I recently picked up a 74 f350 super camper special and am now rebuilding the motor, but i cant figure out the size engine is in it, i do know it is the original to the truck, a few friends have told me they think it's a 390 but i would like to know for sure before i buy new cams for it and end up with the wrong ones, does anyone know any way to determine the size? 
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From: Sandy Eggo
its an FE, there should be a block casting # on the right side under the head and behind the alternator. there is also one down by the oil pump. or you can attempt to measure the stroke of a cylinder while a spark plug is out. there is no other way as all FE blocks look essentially the same.
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From: Gods Country, Kansas
Ok well to measure the stroke make sure a piston is at the bottom of the cylinder and measure from the piston to the to the top of the block. That will give us a number that we can tell you what motor it is. Also you should measure the bore, just put a tape measure across the tho cylinder bore and give us then number. 
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From: Sandy Eggo
then crank the engine over by hand and measure how far up and down the piston slides. google is your friend. i think a 390 has ~3.75" stroke and a 360 is ~3.5". its all on the web, really easy to find.