SKU: 15445299660

Holley LS1/LS2/LS6 Hi-Ram Intake Manifold (HO300-227)

Sale price$907.65 Regular price$1008.50
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Description

Holley LS1/LS2/LS6 Hi-Ram Intake Manifold (HO300-227)HO300 227 EFI HI RAM BASE ONLY LS1 LS2 Manifold Base Only Suit EFI Application Part Number: HO300 227 The Holley GM LS1 LS2 LS6 Modular Hi Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet metal for high performance applications where induction system height is not limited. Coupling this Hi Ram intake with the high flowing LS1 LS2 LS6 style cylinder heads has outstanding potential for N A and forced induction

HO300-227 - EFI HI-RAM BASE ONLY LS1 LS2

Manifold Base Only Suit EFI Application

Part Number: HO300-227

The Holley GM LS1/LS2/LS6 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited. Coupling this Hi-Ram intake with the high flowing LS1/LS2/LS6 style cylinder heads has outstanding potential for N/A and forced induction applications at a budget-minded cost. Aggressive, bold, race-bred styling will make bad intentions clear for drag race, muscle car, marine, off-road, sandrails, pulling trucks, track, street-rod applications and more!
The base is designed to be modular in configuration to accept a wide range of carbureted and EFI tops and to be attractive to builders and fabricators as the foundation for custom induction systems.
Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations
EFI fuel rails are machined for -8AN O-ring Fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI Hi-Ram kits.
Cast aluminum construction.
Intended for use on N/A or forced induction engines in the 6.0 to 7.0+ liter range, max power at 7000-8000+RPM.
Features:
Port Size - 2.49" Height x 1.21" Wide
Mounting Flange Gasket Type - Standard LS3 Molded O-Ring
Plenum Top Gasket Type - 3/32" Round O-ring Cord
Runner Length - 6.58", As-Cast Runner Cross-Sectional Area - Tapered 4.25 in² to 2.53 in²

Shipping Notes
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Exchange/Return Notes
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SKU: 15445299660

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4.1 ★★★★★
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E
Verified Purchase
Eduardo
New York, US
★★★★★ 5
Great for heavy chewers
Style: Tripe, Flavor Name: REAL Beef, Size: Large 1-Pack
It lasts a long time. I have heavy chewers. And this is going strong for months now. It’s their new go to toy. I have americanbulldogs Scott type. 88lbs female and over 100lbs male.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
K
Verified Purchase
Kelly
Lexington, US
★★★★★ 5
Great
Flavor Name: Bacon & Chicken, Size: X-Large
My dogs love to chew these and they are long lasting
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
E
Verified Purchase
Egward
Draper, US
★★★★★ 5
👍
Flavor Name: Chicken, Size: Medium, Flavor Name: Chicken, Size: Medium
Chicken flavor mild kinda just taste spicy plastic but flaverfade quickly. It off-white more than white but it look mostly like picture otherwise. hard and durable but nit hurt teeth. Medium suggested for average human.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
M
Verified Purchase
Matt S.
Belleville, US
★★★★★ 5
Long lasting
Flavor Name: Bacon, Size: Medium
Great dog toy, long lasting
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
M
Verified Purchase
Marie Phillips
Dallas, US
★★★★★ 4
Tough Chewer Approved but Not a Forever Toy
Flavor Name: Original, Size: X-Large
I do like this toy for what it is meant to do. It is definitely built for strong chewers and holds up way better than softer toys that get destroyed in minutes. The texture keeps dogs interested and gives them something to really work on, which helps with boredom and can support dental cleaning through chewing. It is one of those “finally something that lasts a bit” kind of toys for heavy chewers. That said, it is not something you just toss in and forget about forever. Like most hard nylon toys, it will wear down over time and should be checked regularly for rough edges or changes in shape. Some dogs will also go through it faster depending on how intense their chewing style is, so replacement will eventually be needed. Girl, this is one of those “it survives the chaos better than most, but you still need to keep an eye on it” situations.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026

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