Speedmaster Downdraft EFI System Polished With FiTech Ultra EFI GM LS3

This Speedmaster Downdraft EFI System for GM LS3 engines offers a modern upgrade to your engine using a FiTech Engine Management System and harness. Along with the versatile performance of an engine with electronic fuel injection, you'll also get a higher state of tune, the ability to support higher horsepower, and various other marvelous benefits! Plus, it is made from CNC machined 601 cast aluminum that is heat-treated and given a shiny polished finish.

Features and Benefits:
- Fits GM LS3 engines
- Includes FiTech Engine Management System and harness
- CNC machined heat-treated 601 cast aluminum
- Improved throttle response and fuel economy
- Smooth engine operation
- Provides a higher state of tune
- Supports higher horsepower
- 50mm IDA style throttle bodies
- Butterflies are measured for each bore and precision machined to a closer tolerance
- Butterflies are secured to centerless ground brass shafts
- O-ring seals on lower mounting faces prevent leaks
- Polished finish
- Made in the USA!

This USA-made EFI system (1-135-002-02) uses 50mm IDA-style throttle bodies that improve throttle response with smooth engine operation and improved fuel economy. They do so with tight air and fuel ratio control. This system also features a linkage set that combines the throttle stops, idle controls, lever arms, joiner, and balancer. A single screw adjustment calibrates the front-to-rear throttle shafts. Its bell crank's fully indexable cable pulley maintains throttle geometry at slow speeds.

Specifications:
- Injection Style: 8 Throttle Body
- Operating RPM: Idle to 7000
- Intake trumpets: Included
- EGR: No

Vehicle Fitment:
- 1988-1998 Chevy/GMC C/K
- 1960-1987 Chevrolet C10
- 1965-1985 Mustang
- 1966-1977 Ford Bronco
- 1948-1979 Ford F-100

Please Note: Includes FiTech Ultra EFI Management System and harness. Additionally, the kit comes with a comprehensive sensor kit and a set of injectors.