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Gearheads
Well I was beat up on.
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<blockquote data-quote="swampratt" data-source="post: 4046777" data-attributes="member: 15054"><p>I had my riding mower in the bed when I went over there to mow.</p><p>That extra 500 lbs really would have killed it.</p><p></p><p></p><p>The dished piston can have a volume of 10cc or 23cc or more and the flat top is just that a flat top with some valve reliefs cut into it, my reliefs measure 5.5cc.</p><p></p><p>A 23cc dish piston would take my 10.62 compression down to 8.8.</p><p>I have measured some junk replacement pistons with more dish than 23cc.</p><p></p><p>That was a crate 350 from Oreilly auto parts a friend put into a truck for his daughter and added a 268H cam.</p><p>Zero power anywhere and done at 5000 rpm.</p><p>I took him for a ride in my 350 with a 268H I had and it would rev to 7200 RPM before valve float.</p><p></p><p>I ported some heads he got and replaced the dished with flat tops and he then had some fun until his transmission broke.</p></blockquote><p></p>
[QUOTE="swampratt, post: 4046777, member: 15054"] I had my riding mower in the bed when I went over there to mow. That extra 500 lbs really would have killed it. The dished piston can have a volume of 10cc or 23cc or more and the flat top is just that a flat top with some valve reliefs cut into it, my reliefs measure 5.5cc. A 23cc dish piston would take my 10.62 compression down to 8.8. I have measured some junk replacement pistons with more dish than 23cc. That was a crate 350 from Oreilly auto parts a friend put into a truck for his daughter and added a 268H cam. Zero power anywhere and done at 5000 rpm. I took him for a ride in my 350 with a 268H I had and it would rev to 7200 RPM before valve float. I ported some heads he got and replaced the dished with flat tops and he then had some fun until his transmission broke. [/QUOTE]
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