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Speedmaster Chevy LS1 Downdraft EFI Stack Intake Manifold System Fuel Injected

Speedmaster PCE148.1058


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Estimated to ship directly from the manufacturer on 07/02/18
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Speedmaster Chevy LS1 Downdraft EFI Stack Intake Manifold System Fuel Injected $1,324.60
Chevy LS1 Downdraft EFI Stack Intake Manifold System
  • Fuel Injected
  • Non-EGR
  • Idle-7500 RPM
  • Includes Intake Trumpets and Fuel Rails
  • Unassembled
  • Aluminum Casting
  • Satin Finish
  • Complete 8-Piece Set

  • Speedmaster PCE148.1058 Details

    Chevy LS1


    Manufacturer's Part Number:

    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.


    • 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 part fit my 5.3 LS?

    Asked by: 5398frank
    Yes, this intake will fit your LS series engine.
    Answered by: Rusty B
    Date published: 2018-04-26

    Will this work on a 5.3?

    Asked by: 5398frank
    Yes, this should fit your 5.3L LS1 engine.
    Answered by: Rusty B
    Date published: 2018-04-24

    Ive been stuck in the sbc world and not really that clear on what fits which ls... will this fit the lm7?

    Asked by: Colinrite139
    This is made to fit the LS1 Chevy engine. Individual throttle bodies for an EFI system.
    Answered by: Rusty B
    Date published: 2018-04-14
    • y_2018, m_6, d_20, h_5CST
    • bvseo_bulk, prod_bvqa, vn_bulk_2.0.8
    • cp_1, bvpage1
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    • loc_en_US, sid_10001_10001_3543450, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs
    Some parts are not legal for use in California or other states with similar laws / regulations