Hastings 4.250" Bore Piston Rings File Fit 5/64 x 5/64 x 3/16" Thick Low Tension - Moly Gauges & Data Acquisition Individual Gauges 814" inside diameter are used

814" inside diameter are used to equalize the installed height of valve springs

Deep Powerful Exhaust Tone

Coolers have 3/8" barbed fittings and include rubber hose

The raised throttle body location optimizes the larger

Carburetor inlet fittings are must-have accessories when installing or tuning your Edelbrock carburetor

Hastings 4.250" Bore Piston Rings File Fit 5/64 x 5/64 x 3/16" Thick Low Tension - Moly Gauges & Data Acquisition Individual Gauges 814" inside diameter are usedProduct Description: Piston Rings Premium Ductile Moly 4. 250 in Bore File Fit 5 64 x 5 64 x 3 16 in Thick Low Tension Ductile Iron Plasma Moly 8 Cylinder For nearly 100 years, Hastings has earned its reputation as a leader in piston ring technology.