Unleash the Power of Your Engine with the Holley SBC Hi-Ram! Introducing 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. 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. The 300-950 model boasts a standard Hi-Ram configuration with a top-feed plenum, designed to accommodate up to a 105mm Gen IV LS 4-bolt throttle body, including drive-by-wire options. Upgrade your engine today with the Small Block Chevy Hi-Ram manifold and experience unparalleled performance and style!
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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
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Cost-effective alternative to fabricated sheet-metal or billet manifolds for high-performance applications where induction system height is not limited
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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.
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Uses drive by wire or cable actuated GM Gen IV LS 4-bolt throttle bodies
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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
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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.
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Power Band: 1500-8000 RPM
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Black anodized EFI fuel rails are machined for -8AN O-ring fittings and come included with the EFI Hi-Ram kits.
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Plenum Top Gasket Type – 3/32” Round O-ring Cord
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Cast 356-T6 Aluminum Construction, Natural, Satin As-Cast Aluminum Finish
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Requires the use of early type GM or small cap MSD or Holley Distributors. Not compatible with HEI distributors
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1.95” tall x 1.25” wide port flange openings, uses Mr. Gasket intake manifold gasket #5281
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Throttle Cable Bracket is supplied in the kit
Brand |
Holley |
|---|---|
Color |
Natural |
Construction |
Cast |
EGR Port |
No |
Emission Code |
4 |
Engine |
Chevrolet Small Block Gen I |
Finish |
Natural |
Front Maximum Height |
12.023 IN |
Fuel Injectors Included |
No |
Fuel Rail(s) Included |
Yes |
Fuel System Type |
EFI |
Gasket Or Seal Included |
Yes |
Grade Type |
Performance |
Intake Runner Length |
6.35 IN |
Manifold Type |
Hi-Ram |
Material |
Aluminum |
Nitrous Bung(s) Included |
No |
Plenum Finish |
Natural |
Plenum Volume |
528 CI |
Port Size |
1.95 x 1.25 IN |
Product Type |
Intake Manifold |
Rear Maximum Height |
10.69 IN |
Removable Runners |
No |
Removable Top/Lid |
Yes |
RPM Power Band |
1500-8000 |
Single Or Dual Plane Type |
Single Plane |
Throttle Body Included |
No |
Throttle Bore |
105 MM |
Warranty |
Limited 90 Day |
UPC |
090127857403 |
Part Number |
300-950 |
ABOUT HOLLEY PERFORMANCE
For over a century Holley has driven the cutting edge of fuel-system design. That work continues today through Holley’s market-leading EFI products as well as through Holley’s family of best-in-industry brands. Top brands like MSD, Flowmaster, Hurst, Accel, and many more make up the industry’s leading offering of enthusiast-driven products to deliver robust, complete performance solutions for builders, racers, and drivers. From propelling the LS-, Coyote-, and Gen 3 Hemi-swap trends, to continuously innovating late-model and vintage vehicle performance, Holley’s commitment to its customers and their cars is at the core of everything we do.
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