Holley Needle & Seat - "Steel" Needle and Seat (Adjustable w/ .150" Seat) 91940039 1967-1976 Chevrolet Impala

1967-1976 Chevrolet Impala

3 in Tubes

Distributor Cap

many with CARB Approved EO#s on Exhaust headers

1984-1993 Chevrolet G20

Holley Needle & Seat - "Steel" Needle and Seat (Adjustable w/ .150" Seat) 91940039 1967-1976 Chevrolet ImpalaSteel tipped inlet needles are necessary when using exotic racing fuels or alcohol or when using benzine or acetone additives. a . 097" seat size should be used for small four barrel carburetors; a . 110" seat size should be used for carburetors up to 735 CFM; larger seat sizes should be used with carburetors 750 CFM and larger. "Adjustable" needle and seat designs allow external float adjustment, without removing the fuel bowl. The "non adjustable"