Holley 550-850D

Diagram

Application Guide

Master Kit Features:

• Includes 40 ft. of 3/8 in. Vapor Guard fuel hose, (1) Bosch LSU 4.9 wideband oxygen sensor, (1) 2.250 in. clamp-on oxygen sensor kit, (10) stainless steel hose clamps, (1) post filter, (5) fittings, and caps
• Supports up to 350 horsepower (HP) via (2) 100 lb./hr. injectors
• Throttle body-mounted ECU
• Ford C4/C6 transmission kick down lever
• GM TH350/TH400 and 700R4 transmission kick down provisions
• (4) Wiring connections - Positive battery, negative battery, switched Ignition and RPM
• Integrated ignition timing control and coil driver
• Factory-style throttle position sensor (TPS) / idle air control (IAC) and fuel pressure regulator
• 58.5 PSI fuel pressure
• 3.280 in. height
• 9/16-18 female O-ring (AN 6) inlet/outlet size
• 2Bar Map sensor
• No laptop required for tuning

In-Tank Retrofit Fuel Module Features:

• Installs in most 7 in. to 12 in. deep factory fuel tanks or fuel cells
• The mounting surface is only 1.275 in. thick for a low-profile design and added clearance
• An innovative clamping system for locating the module anywhere in the tank beside the existing sending unit
• 360-degree rotating for easier clocking of the plumbing and wiring locations
• Construction of die-cast aluminum
• 1/4 in. NPT ports
• 340 LPH fuel pump

Note:

• Ford transmissions may require Holley 510-20-60 Ford Transmission Kickdown Spring and Bracket Kit

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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