SKU: 33509781705

Holley Single Plane Split-Design Intake Manifold GM LS1/LS2/LS6 Black 300-256BK

Sale price$350.98 Regular price$389.98
Save 10%

Pay in installments of $97.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 25 - Aug 30

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Holley Single Plane Split-Design Intake Manifold GM LS1/LS2/LS6 Black 300-256BKOverview: 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 ? Carburetor 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
  • Black Finish

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Barrels 4
Brand Holley
Color Black
Construction Cast
Emission Code 3
Engine GM LS1/LS2/LS6
Finish Black
Flange Style 4150 Square Bore
Front Height 7.32"
Fuel System Type Carb
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: 33509781705

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 23 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Mel M
Grantham, US
★★★★★ 5
20 X 40mm vial labels
Size: 1.6“ X 0.8"-White, Color: White
Works perfectly. Make sure when you’re buying labels that you don’t buy M1/M2 labels unless you have the M1/M2. You need direct transfer unless you have the M series with the fancy color cartridges etc. The “fancy” labels won’t work on normal thermal printers, they need the color cartridges to show up. Anyway this is the 20mm X 40mm size. Perfect for vials. Works in many other non-branded machines.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
D
Verified Purchase
Damian
Grantham, US
★★★★★ 5
Great
Size: 1.6“ X 0.8"-White, Color: White
👍🏽
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
K
Verified Purchase
Kindle Customer
Omaha, US
★★★★★ 5
Great label for our products!
Size: 1.2" X 1.2"-Round-White, Color: White
Finding the NIIMBOT B1 Thermal printer has been a time-saving blessing. The labels are the perfect size and so easy to use-just right for our products and carry out bags! A great value for the money!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 12, 2025
B
Verified Purchase
Beth
Lowell, US
★★★★★ 5
Dog loves these
My dog is obsessed with these 🙏🏻😇
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 20, 2026
M
Verified Purchase
M. Suzanne
Draper, US
★★★★★ 4
I liked these treats for my dogs
My dogs like these treats
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 20, 2026

recommand products