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
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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SKU: 15445299660

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4.2 ★★★★★
Based on 7 reviews
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J
Verified Purchase
Jason W
Bozeman, US
★★★★★ 5
This is one “under the radar” gem!!
Size: Large, Color: Coral
This is one “under the radar” gem!! Very strong internal squeaker and way tougher than it looks. My big 125lb Shepard-Husky mix gave it heck, then made it his new buddy. He’ll occasionally give it the business but on the whole, it’s surprisingly tough and my big boy loves it. Nice price!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
H
Verified Purchase
H
Bozeman, US
★★★★★ 4
Cute but small
Size: Large, Color: Skinny Green
Cute stuffy and has not yet ripped. While my dogs plays with it, the toy is a bit small for him. For reference he is 120lbs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
H
Verified Purchase
hnew
Birmingham, US
★★★★★ 5
After a lot of chewing, it’s still holding up with only minor wear
Color: KING KONG
I have a pit bull, so finding toys that actually last is always a struggle. Most toys don’t survive more than a day, but the PETSTA Indestructible Dog Toy has been surprisingly tough. My dog went straight to it and started chewing right away, and it’s held his attention way longer than other toys usually do. The beef flavor definitely helps, and the toy itself feels solid and well-made, which is exactly what you want when your dog has a strong jaw. After a lot of chewing, it’s still holding up with only minor wear, which honestly impressed me. It’s been great for keeping him busy and stopping him from chewing things he shouldn’t. No toy is truly indestructible, but this one comes pretty close and has lasted longer than most toys I’ve tried. If you have a pit bull or another aggressive chewer, this toy is definitely worth trying.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 18, 2025
J
Verified Purchase
James Wise
Whiting, US
★★★★★ 5
Perfect for strong chewers
Color: KING KONG
This “indestructible” dog toy (we call it Muscle Dog 😂) has been amazing! My dogs are pretty aggressive chewers and this thing has held up way better than most toys we’ve tried. They love playing with it and it keeps them busy for a long time without getting torn apart right away. It’s tough, durable, and definitely lives up to the name more than other “indestructible” toys out there. We’ve tried a lot of toys and this one is a winner—perfect for strong chewers!
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Reviewed in the United States on April 28, 2026
M
Verified Purchase
Michelle troncin
West Palm Beach, US
★★★★★ 5
Long lasting&apparently a good flavor(for dogs)
Color: Lobster
Dog has stayed interested keeps selecting this chew toy . An aggressive chewer so a toy that can last is a great find
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026

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