Engine Identification 360 or 390
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Freshman User
Joined: Nov 2012
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Engine Identification 360 or 390
I have A 1974 F250 that had a 360 in it, but someone rebuilt the engine. Valve covers say it is a 360. It has a plate on the front of the block with this information on it: Bore .030, Rods .020, mains.010 and the Number T54585. I assume these are over size numbers, but I am wondering if the T54585 would tell if it is a 360 or 390? Anyone know? Thanks!
Fleet Owner
Joined: Dec 2009
Posts: 20,678
Likes: 82
From: NorCal
Plate? A lil riveted or pinned-on plate? That is likely a remanufacturer's ID plate.
Some are good, some are bad... it's like a box of chocolates on parts quality and workmanship.
Gotta measure the stroke using the dowel method at TDC and BDC.. I forget the measurements but it's like 1/4-inch difference btwn a 360 and 390.
Some are good, some are bad... it's like a box of chocolates on parts quality and workmanship.
Gotta measure the stroke using the dowel method at TDC and BDC.. I forget the measurements but it's like 1/4-inch difference btwn a 360 and 390.
Lead Driver
Joined: Nov 2006
Posts: 5,217
Likes: 506
From: Pa.
This is a good thread and describes the dowl method as HIO Silver mentioned above https://www.ford-trucks.com/forums/7...ml#post6830607
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