Speedmaster Downdraft EFI System Polished With FiTech Ultra EFI GM LS 1/ LS6
Highlights
- CNC Machined
- Improved Fuel Economy
- Heat-Treated 601 Cast Aluminum
- Includes O-Ring Seals
Speedmaster Polished Downdraft EFI System with FiTech Ultra Fuel Injection System for GM LS1 and LS6 Engines.
The Speedmaster Polished Downdraft EFI System (1-135-016-02) with FiTech Ultra Fuel Injection System for GM LS1 and LS6 Engines is a high-performance machine that has been CNC machined with heat-treated 601 cast aluminum. Designed to support high horsepower, this system delivers excellent throttle response and smooth engine operation while also providing improved fuel economy.
Features and Benefits:
- Capable of supporting high horsepower
- CNC machined
- Heat-treated 601 cast aluminum
- Excellent throttle response and smooth engine operation
- Improved fuel economy
- Provides a higher state of tune
- 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
- Stunning polished finish
The butterflies are individually measured for each bore and precisely machined to a closer tolerance, and they are secured to centerless ground brass shafts. With O-ring seals on the lower mounting faces and a stunning polished finish, this system provides a higher state of tune that serious enthusiasts will appreciate.
Please Note: Includes FiTech Ultra EFI Management System and harness. Additionally, the kit comes with a comprehensive sensor kit and a set of injectors.
Specifications:
- Injection style: 8 throttle body
- Operating RPM: idle to 7000
- Intake trumpets: included
- EGR: no
- Finish: polished
Vehicle Fitment:
- 1965-1985 Mustangs
- 1966-1977 Broncos
- 1948-1979 F-100s
- 1960-1987 Chevrolet C10s
- 1988-1998 Chevrolet/GMC C/K Trucks
California Residents: Proposition 65 Warning
Related Categories: Mustang Fuel Injectors & Mass Air Meters, Restomod Engine, F-100 Restomod Engine, F-100 EFI Conversion Kits, C10 EFI Conversion Kits
Only for use on pre-pollution controlled vehicles: This product can be used on vehicles that were manufactured before emissions control regulations were imposed. Pre-pollution vehicles are defined as:
- 1965 and older U.S. manufactured California certified vehicles
- 1967 and older U.S. manufactured federally certified vehicles
Vehicle Fitment
This product will fit the following Bronco years:
This product will fit the following C/K years:
- 1988,
- 1989,
- 1990,
- 1991,
- 1992,
- 1993,
- 1994,
- 1995,
- 1996,
- 1997,
- 1998,
This product will fit the following C10 years:
- 1960,
- 1961,
- 1962,
- 1963,
- 1964,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
- 1973,
- 1974,
- 1975,
- 1976,
- 1977,
- 1978,
- 1979,
- 1980,
- 1981,
- 1982,
- 1983,
- 1984,
- 1985,
- 1986,
- 1987,
This product will fit the following F-100 years:
- 1948,
- 1949,
- 1950,
- 1951,
- 1952,
- 1953,
- 1954,
- 1955,
- 1956,
- 1957,
- 1958,
- 1959,
- 1960,
- 1961,
- 1962,
- 1963,
- 1964,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
- 1973,
- 1974,
- 1975,
- 1976,
- 1977,
- 1978,
- 1979,
This product will fit the following Mustang years:











