289 & 302 Windsor Engines. Failure to do so will cause your order to be DELAYED. Piston & Ring Size (4.000″, 4.030″, 4.040″, 4.060″). Main Bearing Size STD. Rod Bearing Size STD. Speed Pro H273CP Flat Top Press-Fit Hypereutectic Pistons. Hastings 2M139 Moly Piston Rings. ACL Main Bearings, Large Journal ACL Rod Bearings & Dura ..
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