SKU: 53500070743

Chev Holley EFI LS Hi-Ram Intake Manifold Base LS1 LS2 LS6 # HO300-227

Sale price$717.75 Regular price$797.50
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Description

Chev Holley EFI LS Hi-Ram Intake Manifold Base LS1 LS2 LS6 # HO300-227Chev Holley EFI LS Hi Ram Intake Manifold Base LS1 LS2 LS6 # HO300 227 Intake Manifolds, EFI, LS, Hi Ram, Base Only, Cathedral Port, Multi port, Standard Deck, Aluminum, Satin Finish, Chevy, 4. 8L, 5. 3L, 5. 7L, 6. 0L, Each Cylinder Head Configuration: Cathedral Port LS1 LS2 LS6 Fuel Injection Style: Multi port Basic Operating RPM Range: Idle 8,000 Intake Section Included: Base only Engine Block Deck Height: Standard deck Injectors Included: No Multi

Chev Holley EFI LS Hi-Ram Intake Manifold Base LS1 LS2 LS6 # HO300-227
Intake Manifolds, EFI, LS, Hi-Ram, Base Only, Cathedral Port, Multi-port, Standard Deck, Aluminum, Satin Finish, Chevy, 4.8L, 5.3L, 5.7L, 6.0L, Each
Cylinder Head Configuration:
Cathedral Port LS1/LS2/LS6
Fuel Injection Style:
Multi-port
Basic Operating RPM Range:
Idle-8,000
Intake Section Included:
Base only
Engine Block Deck Height:
Standard deck
Injectors Included:
No
Multi-Port Fuel Rails Included:
Yes
EGR:
No
Aftermarket Fuel Rail Required:
Yes
Throttle Body Included:
No
Supplemental Bosses Cast-In:
No
Supplemental Bosses Machined:
No
Runners Included:
Yes
Runners Removable:
No
Base Material:
Aluminum
Base Color:
Natural
Remanufactured:
No
Quantity:
Sold individually.
Notes:
Fuel rails are machined for -8 AN O-ring female fittings. Cathedral port heads only. Can use 92mm. or 102mm. throttle body with purchase of proper flange.
Holley EFI LS Hi-Ram Intake Manifold Bases
Holley EFI LS Hi-Ram intake manifold bases are cost-effective alternatives to fabricated sheet metal for high performance applications where induction system height is not limited. Coupling these cast aluminum Hi-Rams with the high flowing LS-style cylinder heads has outstanding potential for N/A and forced induction applications at a budget-minded cost. These modular lower manifolds accept a wide range of carbureted and EFI tops, making them attractive to builders and fabricators as the perfect foundations for custom induction systems. Fuel rails are included and machined for -8 AN O-ring fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system. The aggressive, bold, race-bred styling of Holley GM LS modular Hi-Ram lower manifolds will make bad intentions clear for drag race, muscle car, marine, off-road, sand rails, pulling trucks, track, and street-rod applications.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 53500070743

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4.2 ★★★★★
Based on 12 reviews
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Verified Purchase
Palmetto Dan
Boise, US
★★★★★ 5
Great fuel cleaner
Size: 300 Milliliter
Excellent fuel injection cleaner! Works great for keeping injectors clean. Improves engine performance. Easy to use. Makes a noticeable difference. Good value. Highly recommended for regular engine maintenance. Perfect product for anyone caring for their car!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
R
Verified Purchase
Randy W R
Waukegan, US
★★★★★ 4
Reputable, reasonably priced fuel additive to clean valves, with handy dispenser. Not all comes out.
Size: 300 Milliliter, Size: 300 Milliliter
Honest review of Liqui Moly 2007 Jectron Gasoline Fuel Injection Cleaner - 300 ml , blue @ $8.68 at time of order. I recently acquired a 2002 Ford Taurus with the 3.0L V6 and DOHC. It only had about 131,000 miles on it, but I noticed it seemed like there would be some intermittent misses in the firing. Other than oil changes, I do not believe that this vehicle was mechanically well maintained. After some research and reading reviews of products, I opted to try some injection cleaner as one step in a treatment regimen. I will endeavor to update this review with results after giving it time to work. Likes: Amazon Prime shipping, returns and refunds within 30 days of receipt. Reputable product. The price point seemed reasonable, especially if it works as advertised (10.1 ounces, single treatment can). Comes with dispensing attachment for easier pouring. Dislikes: The design of the can and pouring mechanism left a small amount of product inside the can of valve cleaner. Even completely inverting the can it wouldn’t come out. Granted, it wasn’t a whole lot, but I paid for all of it, not for some left in the can that wouldn’t even shake out. Sorry if this sounds nitpicky, but it is also a problem for disposal afterwards as it has to sit out and evaporate or put it in the trash with flammable liquid inside. Meh: I have put several miles on since adding this to just over a quarter tank of fuel and have not noticed any improvements. I realize it might take a while longer perhaps. Hopefully this honest review helps someone decide about this product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2023
L
Verified Purchase
Logan
Whiting, US
★★★★★ 5
Helped smooth engine idle and acceleration
Size: 300 Milliliter
Bought a new to me bmw and this stuff made it run smoother definitely helped clean things up internally car has a smoother throttle response and sounds smoother at idle will definitely be using as recommended to keep injectors and internals cleaner
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Reviewed in the United States on March 9, 2026
J
Verified Purchase
Jennifer Kaye
New York, US
★★★★★ 5
This is the product you want
Size: 300 Milliliter
'08 Honda Fit 270k This product works! Felt almost immediately, acceleration opened up. Excellent.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 5, 2026
R
Verified Purchase
Roboman
Battle Creek, US
★★★★★ 5
This stuff really works fast and improves mpg like you won’t believe
Size: 300 Milliliter
I’ve tried many other types of fuel injector cleaners but this brand is amazing. I ran my truck down to less than a quarter of a tank of gas and poured it into the tank. I then drove 30 miles to an appointment and spent an hour in the appointment on the way home I noticed my mpg had gone up significantly. My truck tells me how many miles per gallon. I’m getting as I drive. I had gotten a code and I replaced the mass air filter and found a slight crack in an air hose, which I replaced that help with my code a little bit, but cleaning the fuel injectors with this product made such a significant difference. I just simply had a hard time believing it, but it’s true. I’m done with all those other brands of fuel injector cleaners which never really seemed to help much if you really want an amazing experience give this product to try.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 4, 2025

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