360/390 engine identificdation
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From: Gig Harbor, WA
360/390 engine identificdation
Other than the flywheel end of the crankshaft can you identify whether an FE engine is a 360 or a 390 from casting #s or other #s that are visable from the outside of the engine? Can the year of the engine be determined from the #s?
Last edited by rheacox; Nov 1, 2003 at 04:04 PM.
Cargo Master
Joined: Aug 2003
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From: Belleville, Ontario
Both the 360 and 390 are 4.050 bore blocks. The 360 has 3.50 stroke, while the 390 has a 3.78 stroke. The answer to your question is genarally no. The only way to tell one from the other is measure the stroke. By taking out one or all the spark plugs and useing a dowel in the spark plug hole, turn the engine over by hand and measure the distance the piston travels.
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Senior User
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From: Gig Harbor, WA
So, there are no #s, cast or stamped,
or other external physical features to determine if an engine is a 360 or 390 or what year truck it came in? That means I can buy any 390 frome a boneyard, install it in my truck and no one could tell it from the original 360 except by measuring the stroke through a sparkplug hole or by looking at the flywheel end of the crank. Is that correct? Are the cams and the carbs the same?
Cargo Master
Joined: Aug 2003
Posts: 3,237
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From: Belleville, Ontario
The date code is small & it's located between the oil filter adapter pad and the pan rail. The block casting code will not help you identify exactly which it is. Example - C6ME-A could be a 410 or a 330FT etc.,etc.
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