reliabilty of stroker motors - MustangForums.com


5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

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Old 11-02-2005, 12:17 AM   #1  
94BlackCobra
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Default reliabilty of stroker motors

this for all you guys with 331s and 347s. How many miles do you guys have on these motors. The reason im asking is because i drive my cobra everyday it isnt raining or snowing, and im starting to get ready to make some decisions on building a new motor for my babi. Im just not sure if i should build a nice 306 or a nice stroker or motor. If i do go stroker i just want to make sure it can handle the miles. Thanks all
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Old 11-02-2005, 01:17 AM   #2  
StrokemyNotch
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Default RE: reliabilty of stroker motors

1500 miles on my professionally built Eagle rods and pistons 347.


Its blowing blue smoke now above 4k rpm, but this is because i dogged it way too soon. Dont be an idoit like me and make sure you break in your motor nice and slow.[]
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Old 11-02-2005, 08:53 AM   #3  
stanglx2002
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Default RE: reliabilty of stroker motors

i have about 40,000 on my 331 DD and it runs great
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Old 11-02-2005, 11:42 AM   #4  
88BlueGT
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Default RE: reliabilty of stroker motors

I dont have personal experience, I would of but thanks to stanglx2002 I am not now (90% sure going w/ the 357 ) but anywayyy... ive heard that the 347's are not as reliable as 331. Ive heard that 347's need refreshening at about 30,000 - 40,000 where as a 331 will go to 70,000-80,000 w/ no problem. Ive heard this from numerous sources but dont take my word for it, thats just what ive heard.
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