... Ratio11.6:1, Comp.Ht. 1.115, -5cc Dome Vol, 4032 alloyFlat Top,4.030''Bore, Rod lgth 6.125", Comp ... .0:1, Comp.Ht. 1.115, -5cc Dome Vol, 4032 alloyFlat Top,4.005''Bore, Rod lgth 6.125", Comp ... .6:1, Comp.Ht. 1.315, -5cc Dome Vol, 4032 alloyFlat Top,4.060''Bore, Rod lgth 6.125", Comp ... Ratio11.2:1, Comp.Ht. 1.315, -5cc Dome Vol,4032 alloy LS (LS2 / LS3 / LS6 / L92 ) Forged Piston-Professional Flap Top-