Holley Single Plane EFI Split-Design Race Intake Manifold GM LS1/LS2/LS6 300-255 h-pipe 1L L6 1973 - 1974

1L L6 1973 - 1974 Buick Apollo 250/4

9/16 Hex Fitting

They are precision machined from 6061-T6 billet aluminum for strength and durability

1977-1978 GMC K25 305 CID

Holley has raised the bar again with the introduction of the VR1 and VR2 Brushless in-line fuel pumps

Holley Single Plane EFI Split-Design Race Intake Manifold GM LS1/LS2/LS6 300-255 h-pipe 1L L6 1973 - 1974Overview: The new Holley Single Plane Race intake manifold were designed with performance in mind. They feature a race bred, two piece split feature that was previously only found on the most expensive race intakes. The manifold will fit GM LS Gen III engines with cathedral port heads and are intended for 4150 style square bore flanged carburetors or throttle body EFI. The LS Race single plane intake manifold was designed for hi performance racing