Holley 300-951 Hi-Ram Front-Feed EFI Intake Manifold Kit - Small Block Chevy

ntroducing the latest addition to the acclaimed Hi-Ram EFI intake manifold series, originally designed for the GM Gen IV LS3 engine. The Holley SBC Hi-Ram is engineered to elevate your vehicle’s performance to new heights. Unleash the Power of Your Engine with the Holley SBC Hi-Ram! The 300-951, a hood-height friendly Hi-Ram variant features a “front-feed” plenum and a forward-facing throttle body flange. This beast can handle up to a 95mm LS 4-bolt throttle body, including DBW throttle bodies. It’s the ultimate upgrade, replacing the popular Holley/Weiand Stealth-Ram intake manifold, renowned for boosting the performance of 1985-92 GM 5.7L TPI fuel-injected engines. The versatile fuel rail kits are compatible with both long and short type fuel injectors, ensuring flexibility and convenience. Experience the power and aesthetics of high-end billet and fabricated racing intake manifolds, all at the cost-effective price of cast aluminum. Perfectly designed to fit under the OE hood of Gen 1, 2, & 3 Camaros and Firebirds, the 300-951 is your ticket to transforming your ride into a high-performance machine!

Power Band: 1500-8000 RPM

Black anodized EFI fuel rails are machined for -8AN O-ring fittings and come included with these EFI Hi-Ram kits.

The coolant outlet is a standard Small Block Chevy thermostat housing flange and (1) 1/2 NPT and (2) 3/8 NPT coolant ports are provided.

Uses drive by wire or cable actuated GM Gen IV LS 4-bolt throttle bodies

Requires the use of early type GM or small cap MSD or Holley Distributors. Not compatible with HEI distributors

Throttle Cable Bracket is supplied in the kit

Plenum Top Gasket Type – 3/32” Round O-ring Cord

MAP sensor port is for a GM Gen IV LS MAP sensor, manifold also has provisions for (1) 1/8 NPT, (1) 1/4 NPT, (1) 3/8 NPT fittings to the plenum

Is a hood-height friendly Hi-Ram variation and compatible with OE hoods for Gen 1, 2, & 3 Camaros and Firebirds. Should be compatible with most applications with a mild cowl induction hood

The Small Block Chevy Hi-Ram manifold is available in either a traditional Hi-Ram 105mm plenum layout or with a hood-height friendly 95mm front-feed plenum layout

Cast 356-T6 Aluminum Construction, Natural, Satin As-Cast Aluminum Finish

Designed for 1955-86 265-400 Gen 1 Chevy engines fitted with cylinder heads having a standard intake manifold flange configuration. Not designed for raised intake port, 18 degree, or L31 Vortec type cylinder heads.

1.95” tall x 1.25” wide port flange openings, uses Mr. Gasket intake manifold gasket #5281