Making the move to a Holley EFI Cast Intake Manifold for your GM LS or LT engine seems like a simple move…but do you know what to look for to make the right decision for your application? Whether you need an Ultra Lo-Ram to keep everything underneath the hood or you need the Hi-Ram to feed your large-displacement, high-RPM monster, Holley EFI has an option for you. Timestamps: • 02:30 – Ultra Lo-Ram • 03:13 – Lo-Ram • 04:00 – Mid-Rise • 04:37 – Hi-Ram Follow us on social media: • Instagram: @HolleyPerformance • Facebook: