Holley Single-Plane Race Square Bore Single Plane Intake Manifold - LS1 / LS2 / LS6 - GM LS-Series Breather Tank these 10 degree retainers are

these 10 degree retainers are designed specifically for engines using our 983 Ovate Wire valve springs

1977-1992 Pontiac Firebird

040" 4130 Chromoly

Fuel inlet fitting

Bully Dog products are built to be flexible

Holley Single-Plane Race Square Bore Single Plane Intake Manifold - LS1 / LS2 / LS6 - GM LS-Series Breather Tank these 10 degree retainers areEngine Intake Manifold Lighter than other split race intakes Split feature making porting efforts easy! 33 to 50% the price of other split race intakes Captured O ring seals at head ports and split Vacuum Port options include (2) 1 8, (1) 1 4, and (1) 3 8, NPT ports at the carb flange Billet Fuel Rails and rail mounting hardware included. Product Description: Intake Manifold Single Plane Race Square Bore Single Plane Aluminum Natural LS1 LS2 LS6 GM LS