Holley's Lo-Ram intake manifold base is engineered for GM Gen V LT engines running GM LT-style cylinder heads (OE or aftermarket), designed for forced-induction (supercharged or turbocharged) applications with peak power in the 7,000-8,000 RPM range. This top-feed version is set up for OE direct injection only.
Specifications:
- Engine: GM Gen V LT1
- Configuration: Top-feed plenum base, OE direct injection only
- Throttle body bore: 105mm, accepts throttle body PN 112-581 or similar
- Finish: Black
- Throttle body gasket: Included
- Vacuum ports: Yes
- RPM power band: 3,500-8,000
- Part Number: 300-715BK
Various Hi-Ram plenum top options are available to complement this top-feed base, along with fabrication flanges for custom plenum tops.
FAQ
What throttle body fits this manifold?
The 105mm flange works with throttle body PN 112-581 or similar models.
Can I run an air-to-water intercooler with this manifold?
Yes — the low-profile top-feed design is suitable for use with plenum-mounted air-to-water intercoolers on boosted applications.
Does this include the plenum top?
No — this is the base only. Various Hi-Ram plenum top options are sold separately.

