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Engine differences

Old Sep 24, 2007 | 05:29 PM
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Engine differences

While looking up an alternator for the 97, the partsstore listed 2 different 4.6L engines. What's the difference between these two?
4.6L 281CID V8 F1 (6)
4.6L 281CID V8 F1 (W)
 
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Old Sep 24, 2007 | 05:59 PM
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Originally Posted by MikeB 88
4.6L 281CID V8 F1 (6)
4.6L 281CID V8 F1 (W)
4.6L 281CID V8 F1 (6) = Winsor
4.6L 281CID V8 F1 (W)=Romeo
 
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Old Sep 24, 2007 | 06:32 PM
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How do you tell which one is in the truck? Does it matter when it comes to accessories?
 
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Old Sep 24, 2007 | 07:29 PM
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8th position in the VIN number

The difference are in the engine block, the accessories shouldn't be concerned.

Excuse my poor english, i'm a frend canadian
 
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Old Sep 24, 2007 | 09:27 PM
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Ok, Thanks.
 
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Old Sep 25, 2007 | 09:18 AM
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There is also a difference in the number of head bolts, too. The Windsor 4.6 has 11 bolts, and the Romeo has 13. Or maybe vice-versa, not sure off the top of my head.

The difference is mainly where it was built -- the differences in the block and the head bolt design are just indicators of which plant built the engine.
 
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Old Sep 25, 2007 | 02:04 PM
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Valvecover bolts, not head bolts. The Romeo has a 6 bolt flywheel, Windsor has 8. There are some differences in the valvetrain components too, but the external stuff is the same.
 
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