bbc used piston question
07-31-2012, 05:30 PM
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bbc used piston question
thinking about buying a set of used pistons, they are keith black 787 my motor is a stock crank and rods open chamber heads my question is that on kb website it shows these with a 4.25 stroke and 6.385 rod can i still use with a 4 in stroke and 6.135 rod?
07-31-2012, 05:42 PM
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No. Your piston will be .500 down in the cyl at TDC if I did the #'s right.
07-31-2012, 05:49 PM
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k but if a guy picks them up for 125 is it worth finding a set of 6.535 rods?
07-31-2012, 05:54 PM
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You would still be down in the cyl and I forgot in my first post crank throws to piston skirt clearance might still be an issue.
07-31-2012, 05:56 PM
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ok thanks for saving me some cash
07-31-2012, 06:01 PM
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No problem. If you have a reputible engine builder close by that you trust you can check with him also.
08-01-2012, 09:52 PM
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really good question,
and even better answers! Solid!!!!!!!!
unless you have a good use, or want to put them on the shelf for later.....pass........
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