Manley Chevy LT-1 6.2L 1.590in Head Diameter Pro Flo/Severe Duty Exhaust Valves (Set of 8) 1980-pontiac-bonneville-esi4724444 Release slowly

Release slowly

Molded from rynite a hi dielectric strength material

race and off-road applications

5 Description_INV FLEXPLATE 153 TOOTH 55-85 SB CHEV Description_ASC Fits 1955-1985 GM small block V8 engines except the 400 cid engine

We also traded out the flat-panel filter for an oiled cone filter to maximize airflow into the system

Manley Chevy LT-1 6.2L 1.590in Head Diameter Pro Flo/Severe Duty Exhaust Valves (Set of 8) 1980-pontiac-bonneville-esi4724444 Release slowlyManley Severe Duty Valves deliver the ultimate in strength, reliability, and high performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH 428 for exhaust and NK 844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400F, Manley exhaust valves endured 100 million cycles, while competitors failed after just