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KB Hypereutectic Pistons 69901HCKTM.STD
1 Set 9901HC.STD/1 Set 4000AM8.STD; Pistons & Rings,Bore:4.000" STD, 4 valve reliefs,Top Ring: 5/64", 2nd Ring: 5/64, Oil Ring: 3/16", Comp Ratios:10.9 w/58cc, 10.4 w/62cc, 10.2 w/64cc, 9.0 w/76cc, Gram weight 569/107, Top Land.254". Valve Depth .200", Relief Dia. 2.120"
KB Hypereutectic Pistons KB6180KTD.STD
1 Set KB180.STD/1 Set 4000BD8.005; Pistons & Rings, 4.000 +.060",.200" HD -5.9cc,Top Ring:1/16", 2nd Ring: 1/16", Oil Ring: 3/16", Comp Ratios: 13.0w/58cc,12.3/62cc,11.9w/64cc,10.3w/76cc,Gram weight 563/145, INT-Valve Depth/DIA .280-2.168", EX-Relief Depth/Dia .280-2.168"
