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LS Intake Compatibility Guide: Cathedral vs Rectangular Ports and 92mm vs 102mm Throttle Bodies

31 August 2026

How to Match Cylinder Heads, Intake Manifold, Throttle Body, Camshaft, and Air Intake

11 August 2026

Throttle Body Guide: How It Works, DBW vs Cable, Sizing, Cleaning, and LS Fitment

15 July 2026

How to Clean the Throttle Body

26 September 2025

Featured Products

[Fuel Filter Regulator Kit(No Lines)][LS Swap CPE Fuel Kit]
EVIL ENERGY Universal LS Swap Fuel Kit - 58psi Regulator, 300LPH Pump & AN Fuel Lines Compatible with E85/Gas/Diesel

High-Performance LS Fuel System Kit

  • Optimized for 1999-2014 Chevy LS engines (4.8L/5.3L/6.0L) and swaps(LS-based engines).
  • this complete fuel system upgrade includes a 58psi fuel pressure regulator with 10-micron filtration, a high-flow fuel pump (200-300LPH), and 6AN PTFE braided fuel lines (1500psi rated). Ensures reliable fuel delivery for gasoline, E85, and diesel applications. Ideal for LS engine builds, performance upgrades, and boosted applications with durable, precision-engineered components.
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EVIL ENERGY LS Swap Fuel Filter Regulator 58PSI with 6AN PTFE EFI Fuel Hose KitEVIL ENERGY EVIL ENERGY LS Swap Fuel Filter Regulator 58PSI with 6AN PTFE EFI Fuel Hose Kit
EVIL ENERGY LS Swap Fuel Filter Regulator 58PSI with 6AN PTFE EFI Fuel Hose Kit

Application：1999-2014 Chevrolet V8 4.8L/5.3L/6.0L (LS-based engines)
Item Weight：‎3.76 pounds
Package Dimensions：9.49 x 8.54 x 4.09 inches

$136.99
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Technician inspecting LS intake manifold fitment in a real engine bay, comparing cylinder head port shape, gasket surface, and manifold opening.

LS Intake Compatibility Guide: Cathedral vs Rectangular Ports and 92mm vs 102mm Throttle Bodies

Amber 0 Comments

LS intake compatibility starts with the actual cylinder-head port family, not the throttle-body size or engine label. Cathedral-port and rectangular-port heads require the correct manifold interface, and a 92 mm or 102 mm throttle body still needs the proper flange, control type, electronics, intake tubing, and ECU support. Fuel rails, injectors, sensors, vacuum connections,...
Complete engine intake and top-end system showing air filter, intake tube, throttle body, intake manifold, cylinder heads, camshaft, fuel system, and ECU as one matched combination.

How to Match Cylinder Heads, Intake Manifold, Throttle Body, Camshaft, and Air Intake

Amber 0 Comments

A complete intake and top-end build should be matched from the engine outward. Start with displacement, compression, RPM range, and vehicle use; then choose compatible cylinder heads and camshaft, match the intake manifold to the head ports and operating range, and size the throttle body, intake tube, and air filter for the airflow the...
Mechanical cable and electronic drive-by-wire throttle bodies compared with 85 mm, 90 mm, 92 mm, and 102 mm sizing for LS fitment.

Throttle Body Guide: How It Works, DBW vs Cable, Sizing, Cleaning, and LS Fitment

Amber 0 Comments

Learn how a throttle body controls airflow, compare drive-by-wire and cable-operated systems, and understand why bore size alone does not confirm compatibility. This guide explains throttle body sizing, bolt patterns, TPS and IAC requirements, intake-manifold matching, and key LS swap fitment checks. It also covers common dirty throttle body symptoms, professional diagnostic steps, safe...
Learn how to clean your throttle body with expert step-by-step instructions. Covers cable & electronic throttle bodies, symptoms of dirty throttle body, cleaning tips, and performance upgrades for LS and HEMI engines.

How to Clean the Throttle Body

Amber 0 Comments

Introduction Your vehicle's throttle body plays a crucial role in engine performance, yet it's often overlooked during regular maintenance. Over time, carbon deposits, oil residue, and varnish accumulate on this vital component, affecting fuel efficiency, idle quality, and overall drivability. This comprehensive guide will walk you through everything you need to know about throttle...