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what size engine do I have??????

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Old 04-08-2011, 03:31 PM
ladsonscmom23 ladsonscmom23 is offline
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what size engine do I have??????

ok so hope im in the right place. I have a 76 f-150. need to replace the engine, not sure how to tell what size it is, pretty sure its a 360, and possibly a 390. Anyone have any advice?
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Old 04-08-2011, 03:46 PM
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Welcome to FTE!!
Post your vin number and/or a picture of your motor.
Also... Post a pic of your truck.. I like my truck ****
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Old 04-08-2011, 04:05 PM
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Pull a spark plug and insert a dowel rod. Have a friend turn the engine over by hand. Make a mark at the lowest and highest point of the stroke. Measure the recorded stroke. A measurement of about 3 3/4" is a 390, a measurement of 3.5" is a 352/360. The 360 has a 4.05" bore where as the 352 has a 4" bore. No way to know bore for sure without removing the head. Unless you know the truck there is no guarantee what is in there is what it came with, so a vin is almost useless for IDing your motor. I'm guessing you've already easily seen that its an FE by the intake.

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Old 04-08-2011, 04:22 PM
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Welcome to FTE

The engine code is the 4th digit of the VIN:

1975/76 F150 V8's: G = 302 2V (2WD only) / H = 390 2V (2WD only) / J = 460 4V (2WD only) / Y = 360 2V (2WD/4WD).

360/390''s share the same block. The bore is the same (4.05), the stroke is different.

Stroke: 360 = 3.50" / 390 = 3.78"

While it might have a 352, it's only possible if the engine's been swapped, cuz the 352 was cancelled after the 1967 model year run ended.

352/360/390 and etc FE engines have 5 valve cover bolt holes per side. The 302 has 6, the 460 has 7.
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Old 04-08-2011, 08:00 PM
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If you are going to replace it with another FE, it doesnt matter if its a 360 or a 390 but I wouldnt consider replacing with a 360, go with the 390.
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