The second gen Holset HX35 or HX40 are a huge upgrade for the first gen 12V Cummins trucks. It is designed to work with both the HX35 and HX40 turbos. It not only makes performance gains but looks much better too.
Chevy LS3 2.165 8mm 21-4N Stainless Steel Intake Valves Swirl Polish Undercut
Chevy LS1 LS6 2.00 8mm 21-4N Stainless Steel Intake Valves Swirl Polish Undercut
Chevy SBC 350 1.940" STD 11/32" Stainless Steel Intake Valves
LS LS1 LS6 Stainless steel Intake & exhaust valves 2.00 / 1.57 8mm 21-4N
Chevy LS1 LS6 2.055" STD 8mm Stainless Steel Intake Valves
Chevy LS7 2.200" 5.250" 8mm Stainless Steel Intake Valves
