I finally picked between a reman and a rebuild for my 6.7 Powerstroke

Had a cracked piston on my 2015 F-350 in Austin. Spent a week going back and forth between a reman from Ford for $8k or rebuilding it myself with parts from a local machine shop. Went with the rebuild, put in a set of Manley rods and a new oil cooler. Truck's got 2,000 miles on it now and runs smoother than it ever did. Any of you guys had luck with aftermarket rods in high mileage trucks?

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laura9403mo ago

Manley rods are a solid choice for these trucks, I've put them in a few high mileage 6.7s and never had an issue. The stock rods are usually fine until you start pushing big power, but for a rebuild with a cracked piston it's a no brainer to upgrade while you're in there. Make sure you torque the ARP studs right and check your bearing clearances real close, those new rods can be a little tight. Also keep an eye on the oil temps for the first 500 miles, the new cooler might take a minute to break in.

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aaronlee3mo ago

Man, I gotta push back a little on that @laura940. Ive seen enough stock rods let go even at mid range power levels to not feel great about calling them usually fine. Maybe its the luck of the draw or how people drive, but Ive helped pull apart three 6.7s that snapped rods under 450 hp, just from towing hard. For a rebuild with a cracked piston already, Id rather spend the cash on a quality set of rods than gamble on stock ones being okay. And yeah bearing clearances are huge with aftermarket rods, you really gotta measure twice and torque everything in steps. Also that oil cooler break in tip is solid, first few hundred miles I keep it easy and watch the gauge like a hawk.

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