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Mikezr

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I went with the melling 340hv and all factory parts going on 2 years now and the truck is mint. The oil pump was probably the single biggest issue with the 3v timing system. Few things i would change on them but overall when taken care of those motors can last a long time
 

Carl Keef Jr

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WEDGE

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well the 340HV pump has the same oil pressure according to FordTechMakuloco. what brand for the cast iron tensioners did you get? I had found some from Melling on amazon, also can you confirm what someone said on youtube as far as making sure to NOT use the metal backplate on the tensioners?
I used all OEM Ford parts, with the exception of the oil pump. I work for Ford so that helps
 
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JExpedition07

JExpedition07

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My theory on this is that high rpms caused the failure of the new tensioners. Just the way they blew out seems like it happened under high stress like a wide open throttle situation. I’d highly recommend cast iron ones, I’m going to slip a pair of new ones in and chains/ sell the truck for a few bucks.
 
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Mikezr

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I run a melling hv340 going on two years now and she's still good to go. That said I've heard my share of horror stories about the factory parts failing.
 

Brons2

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I bought the metal ones for my upcoming timing job. I need to get at it before summer hits, it's hot here in Texas.
 
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