347 Piston Rock Issues ?

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#1 (permalink)

10-29-2006, 06:36 AM

KevinM

CC Member

Join Date: Feb 2006

Location: Naples, FL

Cobra Make, Engine:

Posts: 183

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347 Piston Rock Issues ?

Over the years, I have been told by several engine builders that they like the 331 better than the 347 (In a stock 302 block) for a daily driver because of the piston rock issues with the 347.

Supposedly, because the piston comes a fair way out of the bottom of the bore and rocks, it causes more ring wear, etc. This makes good sense, except that I have never heard anyone actually report having any problems related to this.

So my question, for those of you with 347s that have a lot of mileage on them is: Have you had any wear problems of this type, or has the engine been fine?

Thanks,

Kevin

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