Speedmaster Downdraft EFI Stack Intake Manifold - Small Block Chevy Fuel Injected
746-1-148-003
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GM
The Speedmaster Individual throttle body EFI system have all the flash of classic Weber induction but provide higher state of tune and engine performance versatility of EFI. Delivering crisp EFI performance with systems capable of supporting high hp. Fuel and air is delivered through precision cast aluminum 50mm IDA style throttle bodies that allow for superior idle characteristics and astounding throttle response while improving emissions and economy through tight air/fuel ratio control.
Speedmaster linkage set incorporates the throttle stops, idle controls, lever arms and joiner/balancer all in one. It also features a single screw adjustment for calibrating front to rear throttle shafts.
The bell crank has a fully indexable eccentric cable pulley that enables good slow speed drivability and still attain full throttle geometry.
Speedmaster throttle bodies have the following feature:
- CNC machined, Heat treated 601 Cast aluminum.
- Butterflies
- Engine Block Style: Stock/OEM standard deck
- Injection Style: 8 Throttle body
- Basic Operating RPM Range: Idle-7,000
- Intake Trumpets: Intake Trumpets Included
- EGR: No
- Injectors Included: No
- Fuel Rails Included: Yes
- Throttle Body Included: 8 Pieces
- Base Material: Aluminum
- Casting Base Finish: Polished
Notes:
- Requires EFI System / Injectors and Sensors
- Works with distributor 121-2375MSD
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.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Specifications:
Will this system work on a ZZ4 Chev crate engine and what other products will I need to purchase to complete the set up
will this be a direct replacement for a TPI in a C4 corvette. currently looking at this or a FITech Ultra Ram EFI system
will it fit a 1977 chevy 350 engine for a c10
Will it work on a new sbc 350 crate engine
Does this intake have a common plenum for the idle air control and map sensor?
Will this work on a 427 tall block?
Will this intake work on a 5.7 lt1 engine
Will this kit fit late model vortec heads. Why do you not sell a turn key kit complete with compatible ECU etc.
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
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Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.