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How To Build A 525ci Big-Block - Big-Inch...
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Photo 19
How To Build A 521Ci Big Block Exhaust Ports
How To Build A 521Ci Big Block Exhaust Ports
The CNC BB-3 Xtra 380s have a massive intake and exhaust ports with a 2.350-inch intake valve and a 1.880-inch exhaust valve.
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