I Beam 6.125" 2.100" .927" 5140 Connecting Rods Chevy SBC 350 w/ ARP 2000 and have a black oxide

and have a black oxide corrosion-resistant finish

Drum weights 55% less than the OEM drum

When employing a lighter flywheel a counterweight to maintain balance will be required to improve engine response and acceleration

They are washable in solvent but over time should be replaced

Those Speedmaster headers feature 3/8 in

I Beam 6.125" 2.100" .927" 5140 Connecting Rods Chevy SBC 350 w/ ARP 2000 and have a black oxideThese Speedmsater I beam connecting rods incorporate all of the best features possible for an I beam rod, including some strength adders found in H beam designs. Speedmaster I beam connecting rods are profiled with clearance for long stroke applications. These connecting rods feature a one rib cap design for added strength and bearing support, polished beams to eliminate stress risers.