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Old 01-04-2003, 05:43 PM
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Post stroker 455 olds

hey guys, need some help. i bought a 70 455 olds
f block motor complete with c cast heads. all for 325.00. im wanting to make some serious horse power, so iwas talking to one of my olds buddies.
he said i could have my crank reground, and balanced, use big block chevy rods. to get a 493 stroker motor. is this true if it is what all do i need to do to do this any special pistons block work etc.

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Old 01-04-2003, 06:26 PM
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You would have to stroke the Olds motor about .250" and bore it .060 to achieve this, the stock olds engine is undersquare with a 4.125 bore size and a 4.25 inch stroke. You can achieve 468 cubes by simply boring it .060. I'm not sure if the cost of a stroker crank would be worth the 25 cubic inches you would end up with. More cubes would be nice, but this engine has a really long stroke as it is, and you could probably spend your dollars more effectively in other areas {like a set of Edlebrock cylinder heads!}
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