Holley Needle & Seat - "Steel" Needle and Seat (Adjustable w/ .120" Seat) Ace Racing Clutches 1996-1999 GMC C3500

1996-1999 GMC C3500

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Holley Needle & Seat - "Steel" Needle and Seat (Adjustable w/ .120" Seat) Ace Racing Clutches 1996-1999 GMC C3500Steel 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"