SKU: 49517497758

Holley Single Plane EFI Split-Design Race Intake Manifold GM LS1/LS2/LS6 300-255

Sale price$224.97 Regular price$249.97
Save 10%

Pay in installments of $62.49 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 20 - Aug 25

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Holley Single Plane EFI Split-Design Race Intake Manifold GM LS1/LS2/LS6 300-255Overview: The new Holley Single Plane Race intake manifold were designed with performance in mind. They feature a race bred, two piece split feature that was previously only found on the most expensive race intakes. The manifold will fit GM LS Gen III engines with cathedral port heads and are intended for 4150 style square bore flanged carburetors or throttle body EFI. The LS Race single plane intake manifold was designed for hi performance racing

Overview:

The new Holley Single-Plane Race intake manifold were designed with performance in mind. They feature a race bred, two piece split feature that was previously only found on the most expensive race intakes. The manifold will fit GM LS Gen III engines with cathedral port heads and are intended for 4150 style square bore flanged carburetors or throttle body EFI. The LS Race single-plane intake manifold was designed for hi-performance/racing engine applications, 5.3 to 6.2+ liter displacement, and maximum engine speeds of 6000-7000 rpm, depending on the engine combination. This single-plane design provides optimal performance across the RPM spectrum while providing maximum performance up to 7000 rpm. The Holley LS Race manifold incorporates a split feature, which allows disassembly of the intake for direct access to internal plenum and port surfaces, making custom porting and matching a snap. With shoulder bolt locators and O-ring seal, reassembly is simple and precise. Technical Data: ? A-B Height - 7.32" (0° carb flange angle) ? Port Size- 3.28" Height x 1.10" Wide ? Throttle Body Flange - Standard 4150 for up to 1-3/4" diameter throttle bores ? As-Cast Runner Cross-Sectional Area - 3.5 in² at the runner entry tapered to 2.9 in² at the flange exit

Features:

  • Maximum performance race design with hood clearance consideration
  • Lighter than other split race intakes
  • Split feature making porting efforts easy!
  • 33 to 50% the price of other split race intakes
  • Captured O-ring seals at head ports and split
  • Vacuum Port options include (2) 1/8, (1) 1/4, and (1) 3/8, NPT ports at the carb flange
  • Billet Fuel Rails and rail mounting hardware included.

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Barrels 4
Brand Holley
Color Silver
Construction Cast
Emission Code 3
Engine GM LS1/LS2/LS6
Finish Satin
Flange Style 4150 Square Bore
Front Height 7.32"
Fuel System Type EFI
Manifold Type Split Single Plane
Product Type Manifold
Rear Height 7.32"
RPM Power Band 2500-7000
Warranty Limited 90 Day
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: 49517497758

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.9 ★★★★★
Based on 28 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Amazon Customer
Omaha, US
★★★★★ 5
A roomy leather tote
Color: Coffee, Color: Coffee
Firstly, the color of this bag was something I’ve been looking for awhile. I like that it’s structured and is just the right size to carry a lot of items without being too big. I was also impressed with the amount of pockets. I was going to buy a Portland Leather bag but learned they are unlined. Well this has lining. The stitching looks pretty decent, too. If you are looking to buy a leather bag for a good price, I’d pick one up now before tariffs kick in on leather goods!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 9, 2025
L
Verified Purchase
Lucy Ray
Draper, US
★★★★★ 5
Very Nice For The Price
Color: Nude
I wanted a plain neutral colored clutch purse to carry at a wedding. This was one is inexpensive, but does not look cheap. It will easily hold a lipstick, compact, small hair rush, and my phone. It comes with detachable chain that you can use if you want to, but I think it looks more dressy without it. I am sure this will suit your needs if you want a decent clutch purse that doesn't cost a lot of money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
M
Verified Purchase
MomK
Los Angeles, US
★★★★★ 5
Cute dressy purse for special occasion
Color: Black, Color: Black
I bought this so I could have a dressy small evening out purse. It’s a stiff, molded shaped purse and looks great as part of the entire outfit. It comes with two dressy little gold and silver chain shoulder straps to match either one with your clothing or jewelry. Perfect size for carrying powder, lipstick, mirror, pen, a small hairbrush. There is a small, tight little pocket inside to hold a credit card, and some cash. It was the perfect purse for my needs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 23, 2025
R
Verified Purchase
Rebecca
West Palm Beach, US
★★★★★ 5
Functional roomy versatile purse
Color: Black
Faux leather but looks like the real thing. It comes with two chain straps. One is silver one is gold. The trim on the purse itself is gold. It's formed. I can fit several things inside. It's a nice size purse that can take you from day to night even to a clutch.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 25, 2026
F
Verified Purchase
Frediabell
Boise, US
★★★★★ 4
To small for me
Color: Black
Wasn’t happy with it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026

recommand products