1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
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What motor do I have?

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Old 10-21-2017, 08:59 PM
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palmrose2
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Originally Posted by NumberDummy
4th digit of the VIN is the engine code. 1977/79 4WD: H = 351M; S = 400. Both have 8 valve cover bolts per side.

460 (7 valve cover bolts per side) not available with 4WD until 1983.

Like white on rice, you've got it covered.

Definitely 335 series.
 
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