Thread: 4.210 vs 4.250
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  #24  
Old 08-19-2006, 06:13 PM
bird412 bird412 is offline
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Join Date: Jul 2004
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Since most factory engines hae their pistons around .023" deck height and aftermarket pistons are the same or a little more (hence the need to zero deck the block), then the added stroke of .020" with a stock rod length of 6.625 with an off the shelf piston sould put you right at zero deck or close. Instead of making a shorter rod, how about a bearing spacer or a thicker bearing (.050" under) so you can run a Pontiac rod/piston combo on these stroker 4.25 cranks. Some of us want a little better than stock but don't want to spend big bucks for custom parts. You can get a set of KB pistons and aftermarket rods for a Pontiac for $100 more than the custom forgings you need to run this crank with BC rods. For a street engine, you don't need top of the line race parts and I doubt you can buy Chevy rods in 6.800 for $100. So if you could find someone to produce the eeded bearing, the Pontiac piston/rod would be the cheaper solution for a street engine. Problem is, no one makes one.