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Speedmaster 1-148-003

Speedmaster Complete Downdraft EFI Stack Intake Manifold System - Small Block Chevy Fuel Injected

746-1-148-003

Free Shipping Estimated to ship directly from the manufacturer on 01/31/19

$2,266.00
Speedmaster Complete Downdraft EFI Stack Intake Manifold System - Small Block Chevy Fuel Injected $2,266.00
Out of stock
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Complete Downdraft EFI Stack Intake Manifold System
  • Small Block Chevy Fuel Injected
  • Non-EGR
  • Idle-7000 RPM
  • Includes Intake Trumpets and Fuel Rails
  • Unassembled
  • Aluminum Casting
  • Polished Finish
  • 8-Piece Set
  • Speedmaster 1-148-003 Details

    Small Block Chevy

    Specifications:

    Manufacturer's Part Number:
    1-148-003
    Shipping Weight:
    30.69
    Package Height:
    22.1
    Package Depth:
    11.6
    Package Width:
    12.5

    Speedmaster's Downdraft EFI Stack Intake Manifold Systems are designed to provide exceptional EFI tuning and versatile engine performance. These intake manifold systems deliver crisp EFI performance in up to 1000 hp applications. Precision cast aluminum 50mm IDA style throttle bodies deliver sufficient fuel and air to provide superior idle characteristics and throttle response. This intake manifold system will improve emissions and economy through tight air/fuel ratio control.

    Features:

    • All-in-One Linkage Set
    • Single Screw Adjustment Calibrates Front to Rear Throttle Shafts
    • Bell Crank has a Fully Indexable Eccentric Cable Pulley
    • Good Slow Speed Drivability With Full Throttle Geometry
    • CNC-Machined, Heat Treated 601 Cast Aluminum Throttle Body
    • Precision Machined Butterflies are Measured for Each Bore
    • Butterflies Secured to Centerless Ground Brass Shafts with Split Screws
    • Throttle Bodies are Fitted with Bearings Rather than Bushings
    • Throttle Bodie Housing Seals to Shaft Lip Behind Bearings for Extra Sealing Under High Vacuum
    • Contains Idle Bypass Air Bleed Screws
    • O-Ring Seals on Lower Mounting Faces

    Will this intake work on a 5.7 lt1 engine

    Asked by: Superman1457
    This intake is made for pre 1986 Chevy small block engines.
    Answered by: Rusty B
    Date published: 2018-09-11

    Will this kit fit late model vortec heads. Why do you not sell a turn key kit complete with compatible ECU etc.

    Asked by: Big daddy 27
    No, this will not bolt to the later model Vortec cylinder heads. There are many options for EFI kits so we allow our customer the option to choose the best one that matches their application.
    Answered by: Rusty B
    Date published: 2018-08-14

    What tuner/controller do I use for the Speedmaster SBC Downdraft EFI? Is it self adjusting of do I need to find a shop to tune it?

    Asked by: CorvetteMick
    You will need fuel injectors, a fuel system and a kit like this - https://www.jegs.com/i/FAST/244/302000-06/10002/-1
    Answered by: Rusty B
    Date published: 2018-11-01

    Is it possible to buy just the just the trumpeted intake stacks, if so how much for 8.

    Asked by: Barney 18
    The stacks are not available separately.
    Answered by: Rusty B
    Date published: 2018-03-20
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