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Oversize pistions 

 

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 Post subject: Oversize pistions
Posted: Sat Sep 30, 2006 4:40 pm 
Smokin em up
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Gday,

I just pulled my engine apart because of a blown head gasket. I noticed the pistons have a "20" stamped in the centre, does this mean that they are 20thou oversize?

If so what approx displacement would the 351c now have?

Thanks

 

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Posted: Sat Sep 30, 2006 4:55 pm 
Getting Side Ways
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sounds like it. i get about 356c i think? based on a 3 inch piston?

 

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Posted: Sat Sep 30, 2006 11:32 pm 
Getting Side Ways
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Do a search for a online calulator, there is a few out there. :) I am to lazy to do the looking for you, hey I think I even have one stored somewhere.

From memory 30thou is about 357.

Cleveland pistons are standard at 4" not 3"

 

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Posted: Sat Sep 30, 2006 11:35 pm 
Getting Side Ways
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haha, so they are, 354.5cubes then

 

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