2028-4030 302 Small Block Chevy FX Series +4cc Dome Top SBC 23 Degree Forged Piston Set 4.030 inch bore Pin Dia.: 0.927" Comp Height: 1.8" 1.5-1.5-4MM With today's power levels leaving

With today's power levels leaving wall thickness in the cylinders can also help with power and longevity

Because the singles you are purchasing were not made at the same time your original pistons were made there will be variations that could effect their weight

Some Boost or NOS 8 CYLINDER SET

388 Small Block Chevy

This part # is for a replacement single cylinder ring set

2028-4030 302 Small Block Chevy FX Series +4cc Dome Top SBC 23 Degree Forged Piston Set 4.030 inch bore Pin Dia.: 0.927" Comp Height: 1.8" 1.5-1.5-4MM With today's power levels leaving306 Small Block Chevy, FX, Comp Height: 1. 8, +4cc Dome Top, PIN: . 927", Full Floating or Press Fit, Ring Groove: 1. 2 1. 2 3MM, Stroke: 3. 000", ROD: 5. 7, Approx Comp Ratio: 58cc 11. 04, 64cc 10. 17, 70cc 9. 43 *