Guide To Six Cylinder Performance Front View
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The 250ci six has main bearing journals that are the same size as those in the 289/302ci small-block V-8. That, coupled with seven-main bearing construction, makes the Mustang's largest six quite rugged and easy to build. When you build a Ford six, you can make the same improvements as you would with a V-8: chamfer the oil passages, dynamic-balance the bottom end, recondition and shot-peen the connecting rods, install ARP rod bolts, opt for forged pistons if you're going to spin it high, install hardened exhaust valve seats, increase rocker arm ratio, choose the right performance camshaft, and improve breathing. View Related Article
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