Mahle 197779125T 388cid 4.125 x 1.062RCH, 3.625stroke,6.125rod,0.927pin,-8.9cc,404g,12.9CR, 2618
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SMALL BLOCK CHEVY 21 FLAT TOP Gasported / Asymmetrical Valve Pockets PowerPak Plus 388cid 4.125 x 1.062RCH, 3.625stroke,6.125rod,0.927pin,-8.9cc,404g,12.9CR, 2618.