Holley Vacuum Passage Gasket 931025 Chevrolet:Big-Block Race

Chevrolet:Big-Block Race

000 in Rectangle Port

Pumps with aluminum housings have 1/4"NPT inlet/outlet fittings

The FAST LSX 102mm Intake Manifold for GM LS1

Holley Vacuum Passage Gasket 931025 Chevrolet:Big-Block RaceHolley Vacuum Passage Gasket 108 67 20 Seals Vacuum Passages To Vacuum Secondary To Automatic Choke Housing Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every NASCAR Cup team and nearly every NHRA Pro Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well.