SKU: 28627971159

Holley LS1/LS2/LS6 Hi-Ram Intake Manifold (HO300-226)

Sale price$769.50 Regular price$855.00
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Description

Holley LS1/LS2/LS6 Hi-Ram Intake Manifold (HO300-226)HO300 226 HI RAM BASE ONLY LS1 LS2 LS6 Manifold Base Only Suit Carburettor Application Part Number: HO300 226 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

HO300-226 - HI RAM BASE ONLY LS1 LS2 LS6

Manifold Base Only Suit Carburettor Application

Part Number: HO300-226

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 aluminium 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 in sq to 2.53 in sq

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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  • Delivery to the USA:
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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.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 28627971159

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4.4 ★★★★★
Based on 26 reviews
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Patti
Fort Morgan, US
★★★★★ 5
Great product
Style: Trim & Plastic Restorer, 12 fl. oz., Style: Trim & Plastic Restorer, 12 fl. oz.
This makes my 15 year-old car look brand new… And in my experience, it lasts for several months before it needs re-application. Super easy… Just make sure the car surface is very clean and very dry and there won’t be any rain within a day or so.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
P
Verified Purchase
Pope of Beaufort
Cuba, US
★★★★★ 3
Not long lasting
Style: Trim & Plastic Restorer, 12 fl. oz.
Works well but might need multiple coats to get to shinny. Not long lasting.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
D
Verified Purchase
DavidnKy
New York, US
★★★★★ 5
Time will tell
Style: Trim & Plastic Restorer, 12 fl. oz., Style: Trim & Plastic Restorer, 12 fl. oz.
I sprayed off the shutters before using. Then applied the product. It’s a thicker, white liquid. (Think lotion) it applied easily and dried quickly since it was being absorbed into the plastic shutters and aluminum windows; mine were very ‘thirsty’ from being in the direct afternoon sunlight. I like how I didn’t have to worry if one part rcvd more product than another. It blended easily. I think it looks good, but so did using other products over the years. I was told by a neighbor that this was the best product to use on them and other plastics. Time will tell if it holds up.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
L
Verified Purchase
Lovin’ life
West Palm Beach, US
★★★★★ 5
Works great
Style: Trim & Plastic Restorer, 12 fl. oz.
This shined up my car really well, looks like new!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
C
Verified Purchase
Cindy
Fort Morgan, US
★★★★★ 5
Worked wonderfully and so easy!
Couldn’t believe how great this worked! I was waxing my car when I decided to wax the bumpers thinking this would protect them from the dry, sunny climate I live in. The bumpers turned white!!! Got the Meguiar’s Ultimate Black Plastic Restorer, wiped it on and they look brand new!!! Lesson to self…don’t wax plastic! I highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026

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