Holley EFI 300-623 LS1 Lo-Ram EFI Front-Feed Manifold Kit

☆☆☆☆☆ reviews

US$475.94
Price when purchased online
Free shipping Free 30-day returns

Sold and shipped by
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here.
US$475.94
Price when purchased online
Free shipping Free 30-day returns

How do you want your item?
You get 30 days free! Choose a plan at checkout.
Shipping
Arrives Nov 13
Free
Pickup
Check nearby
Delivery
Not available

Sold and shipped by
Free 30-day returns Details

Product details

Management number 254530330 Release Date 2026/11/07 List Price US$475.94 Model Number 254530330
Category

Burst Panel Flange;<br><br>The Holley LS1/2/6 Lo-Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads. These intake manifolds will work with OE or aftermarket cylinder heads. Plenum top is machined for a standard large 6-1/8 in. x 3-1/8 in. burst panel. SFI approved burst panels, burst panel frame sets, and gaskets may be purchased from various manufacturers such as Allstar Performance or Specialty Fasteners<br><br>The Lo-Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine applications and the 105 mm throttle body part number 112-581 or similar models. The base intake manifold is designed with a lower overall height to fit under a stock or mildly modified hood in the front-feed configuration. The 300-623 Lo-Ram front-feed plenum entry was configured to provide a very low profile modular intake manifold suitable for turbocharged or centrifugally supercharged engines. The fuel rail kits come with two sets of brackets. A set for long (usually standard length) fuel injectors and a set for short (such as Pico, or LS7) fuel injectors.;

  • Designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads
  • Designed for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application. Includes a burst panel flange in the lid
  • Plenum top is machined for a standard large 6-1/8 x 3-1/8" burst panel. Burst panels, burst panel frame sets, and gaskets may be purchased from various manufacturers such as Allstar Performance or Specialty Fasteners
  • With forced-induction and the short runner length the engine rpm at which peak power occurs is more likely to be coupled to the supercharger or turbocharger being used
  • Modular design allowing the use of front-feed plenum entry
  • Intake design facilitates custom inlet duct and throttle body placement
  • Low height to fit under a stock or mildly modified hood in the front-feed configuration
  • Front entry plenum flange allows design & fabrication of special throttle body adapters or inlet ducts for custom installations
  • High volume fuel rails and mounting hardware included with 3/4-16 o-ring ports (8 AN)
Vehicle fitment type Specific
Automotive parts division Performance
Vehicle type Car
Brand Holley EFI
Material Cast Iron
Weight 26.74 lb
Finish Satin
Items included burst panel flange, fuel rail kits, two sets of brackets, mounting hardware
Size L
Has written warranty No

Correction of product information

If you notice any omissions or errors in the product information on this page, please use the correction request form below.

Correction Request Form

Customer ratings & reviews

0 out of 5
☆☆☆☆☆
0 ratings | 0 reviews
How item rating is calculated
View all reviews
5 stars
15% (0)
4 stars
30% (0)
3 stars
15% (0)
2 stars
8% (0)
1 star
32% (0)
Sort by

There are currently no written reviews for this product.