SKU: 89075460808

Holley LS1/LS2/LS6 Hi-Ram Intake Manifold (HO300-123)

Sale price$1284.75 Regular price$1427.50
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 11 - Jul 16

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Holley LS1/LS2/LS6 Hi-Ram Intake Manifold (HO300-123)HO300 123 EFI HI RAM LS1 2 6 MANIFOLD Suit Single GM LS 102mm Throttle Body Part Number: HO300 123 The Holley GM LS3 L92 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 LS3 L92 style cylinder heads has outstanding potential for N A and forced induction applications at a

HO300-123 - EFI HI-RAM LS1-2-6 MANIFOLD

Suit Single GM LS 102mm Throttle Body

Part Number: HO300-123

The Holley GM LS3/L92 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 LS3/L92 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:
Base Plenum Top Mounting Flange Height – 8.42” to the lifter valley cover flange on engine block.
Total Height with 92/102mm EFI Plenum Top – 12.32” to the lifter valley cover flange on engine block.
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
Throttle Body Flange Location, with 92/102mm EFI Plenum Top : Height – 8.42” (from engine block lifter valley cover flange), Longitudinal Location – 3.84” (forward from engine block front flange), Angle – 25 deg. (down from vertical)
Runner Length – 6.58”, As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.53 in²

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: 89075460808

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.3 ★★★★★
Based on 1985 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Mike
Massapequa, US
★★★★★ 5
Good
Size: 12 Wide, Color: Black
Easy to walk in good quality, lightweight lace quality is good very comfortable and no resist.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
C
Verified Purchase
California Doug
Belleville, US
★★★★★ 5
Value!
Size: 11 Wide, Color: Brown
Excellent boot for the price! Very solid. Cushy insoles very comfortable. Wide width plenty wide. Recommend getting half to full size smaller than your usual.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
B
Verified Purchase
bobby
Charlottesville, US
★★★★★ 3
Don’t hold up/good Customer Service.
Size: 10.5, Color: Army Green
Please read full review. Where to begin. The boots are comfortable, decent waterproofing, they feel/look well constructed. Unfortunately they did not hold up well, I hikes less than 10 times. My left foot began to hurt on top near bottom of the lace, I tried every lacing method and it still hurt, leading to potential blisters. It was not a break in issue the boots were initially comfortable to wear then around hike 6 they hurt. Reached out to the company they were partially helpful offering a coupon on their website. Their shoes are significantly higher in price on their website. It could have been a lemon pair of boots. Buy with caution. Updated: 4/9/26-CS reached out to me and offered full refund or new pair of boots. I do hike often so I went with the new pair of boots. I will create a new review in the future /update this review. A+ for their CS. Initial review was 2 stars I increased to 3 stars if these boots hold up the score will go higher.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
J
Verified Purchase
Jill
Fort Morgan, US
★★★★★ 5
Nice Grill Cover
Size: 55 Inch, Color: black
I bought this as a replacement cover. It's durably made. It's not too thick or heavy. It fits nicely over my grill. The handles make it easy to put on and take off.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
M
Verified Purchase
MountainMarley
Birmingham, US
★★★★★ 5
Durable, Long-Lasting, Doesn’t Fade in the Sun!!!
Size: 50 Inch, Color: black, Size: 50 Inch, Color: black
I’ve had this grill cover for almost a year now. But it last summer and it has been on my grill that is on open porch (no roof/overhang/cover protect protecting it from the elements). This particular area of the porch gets a ton of direct sunlight all day long as well. Needless to say, I am incredibly impressed by the material of this cover. It looks almost brand new even after a year of use and exposure to the elements. The fact that it didn’t even get faded in the sun a little bit blows my mind. Great product and excellent value! Highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026

recommand products