Description
Holley EFI LS Mid Rise EFI Square Bore Multi Port Intake Manifold LS1 LS2 LS6 GM LS Series H770003L 570" ID that works well With Steam HolesSince 1989 Size:Small (55) EAS21974 WM485MD 570" ID that works well with our 925 and 939 dual valve springs Since 1966