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HomeIntake HardwareThrottle Body Injection Kit8 Cyl Stack InjectionGM/Chev 8 Cylinder Throttle Body Kits

GM LS3 1080 CFM

In Stock

Product Code: 800-LS3-1080-SA

inc GST for Australian Customers
AUD $2,388.00 (ex GST)
for International Customers
approximate only?International prices are based on the tax exclusive amount, and are approximate only (may change when payment is processed).

All orders are charged in AUD


1080 CFM 4 Barrel Throttle Body and Single Plane Manifold to suit the GM LS3 engine.



We have lip seals behind the throttle shaft bearings to stop grease from being sucked out of the bearings under high intake runner vacuum. These are turned around on boosted applications so there is no boost leakage and also stops the bearing grease getting evacuated from the throttle shaft the bearings. 

We ask you if you are going to run your engine Boosted, or Naturally Aspirated so we can install the Lip Seals in your throttle bodies in the appropriate way to suit your application.


We want to supply your Throttle Body Kit just the way you want it.

That's why we offer both Sub Assembled Kits, and Full Assembled Kits.


By choosing the Fully Assembled Option above, you will receive:

- Each of your Throttle Bodies is precision factory assembled

- Throttle Shafts cut to correct lengths to suit your manifold

- Linkages are fitted and adjusted to ensure correct and smooth operation

  Note: Although we will supply a great linkage fitment, final linkage adjustment

  can only be carried out once the engine is running

- TPS "D" drive on the end of the shaft you stipulate so it's in the best position on your engine

- We may contact you with a few questions to ensure we supply the kit assembled to best

  suit your application


By choosing the Fully Assembled Option above, you will receive:

- Each of your Throttle Bodies is precision factory assembled

- Throttle Shafts are left long so you can trim them to suit your engine and manifold

- Linkages are supplied for you to fit and adjust once you have trimmed your Throttle Shafts


1 x Single Plan LSX LS3 Large Port Racing Manifold: Port At Head Face 63.0mm(H) x 29.4mm(W)
1 x 1080CFM EFI Hardware Racing 4 Barrel Throttle Body (Black Linkages) - More Info

1 x Set Of EFI Hardware Fuel Rails
1 x Cable Pulley (Black)

Note: Does not include injectors, TPS, idle stepper motor, cable pull or hose fittings on end of fuel rails.

Use with Part # H-TPSD throttle position sensor kit and the TPS Fitting Kit for Delco TPS Part # H-TPSDKIT.


Due to overwelming demand from our customers, we are transitioning our standard colour from Blue to Black.  Black is a classic colour, and goes with pretty much every engine bay colour and style.

This includes Ram Tubes, Linkages, Cable Pulleys, Drop Links, Bell Cranks, and more.

Don't worry if you love blue, you can still get your kit in blue.  There will be a small premium of $40 per kit to cover us sending out your kit of parts to be anodized blue.  If you would like blue anodizing, please let us know by typing in the notes area of your order.


Every single throttle bore and throttle plate are measured and matched as a pair to ensure the most perfect throttle fit and consistency across every EFI Hardware throttle body.

AIR FILTER MOUNT: The Air Filter Mounting Flange Face is 127mm internal diameter and 137mm

                              outside diameter.  There is a central post hole that is 1/4"UNC thread and 18mm deep.

                              The Air Filter Mounting Flange is compatible with air filters designed to fit Holley and
                              Rochester Carburetors.

We recommend Part # 811-066 Cable pulley to connect to your throttle cable.

811-066cable pull with opposite link

TPS for ccw rotating shaft

Using the Cable Pulley with Opposite Link on a 4BBL Throttle Body for Auto Transmission Kickdown:

One of the most common applications for the Cable Pulley with Opposite Link (811-066) is when you run a 4 Barrel Throttle Body and an Automatic Transmission.  If the Automatic Transmission uses a Kickdown Cable, you will need a way to control the Kickdown Cable.

One of the easiest ways to achieve this is to use the Opposite Link on the 811-066 and connect your Transmission Kickdown Cable directly to either of the two treaded holes on the Opposite Link.

You may need to try both holes to find the one that gives you the best control over the kickdown cable to give the most natural kickdown actuation.  You may also need to adjust the amount of "takeup" on the cable before it goes tight to fine tune the kickdown actuation.

These are cast in Australia then CNC machined to precise tolerances, then assembled and quality checked before shipping by us at EFI Hardware in Melbourne. Unlike cheap imports that run through parent metal, the shafts on EFI Hardware throttle bodies run on bearings with lip seals behind and are fully serviceable.

EFI Hardware now produce 6° Throttle Plates.

In the past, 12° throttle plates were the industry standard.  The problem with 12° throttle plates, is that as the plates are moved off the closed position, the change in airflow is huge.  It makes it very difficult to drive smoothly at lower throttle openings.

At EFI Hardware, we only use 6° throttle plates.  This improves off idle and cruise driveability making your vehicle far more enjoyable to drive.


We now recommend

and use SKF bearings.