Tilden Motorsports Pro Series Ready To Run LS3 Package

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Quick Overview

The Tilden Motorsports Pro Series Ready To Run LS3 Packages are filled with power! When combined with long tube headers and a free flowing intake, this engine stamps out a whopping 575 horsepower and 572 lbf-ft torque!  These engine packages include an LS3 crate engine, fabricated and polished valvecovers, Tilden Motorsports performance ignition wires, Tilden Motorsports Ultra 4 cam package, AFR cathedral port heads, Fast performance intake manifold, ARP head bolts, Cometic head gaskets, Tilden Motorsports Pro Series oil pan, electronic pedal, custom built standalone harness, and a preflashed PCM. Call for current lead times. 

Tilden Motorsports Pro Series Ready To Run LS3 Package

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  • Engine
    • GM Performance LS3 crate engine
  • New standalone engine harness
    • Our harness contains any fuses and relays that will be needed. There is no main power feed required for this harness, just a single switched ignition power will switch a relay in the harness that in turn, supplies 12V power to all of the required engine sensors and the ECU. We use weather pack connectors on all engine connections as well as a weather tight fuse block to ensure that connections are protected from the elements. All of our harnesses come with an easily accessible DLC (Data Link Connector) that is usually long enough to be mounted in the passenger compartment. This allows for easy access to the ECU via a laptop or standard scan tool.
  • Pre-flashed GM PCM
    • We supply all of our engine packages with a genuine GM factory computer. The GM factory computer, unlike our competitors’ marine style computer, is fully supported by any GM repair facility. GM has invested thousands of hours of research and development time into perfecting their computer technology. Many aftermarket companies try and duplicate the factory computer with "cheaper" components that often fail prematurely. Because of this the aftermarket computers just can't compare to a GM factory computer.


Note: Due to variations in engine tuning. We do not supply Mass air flow sensors (MAF) or oxygen sensors (02) on any NEW ready to run engine package. Some Tuners Prefer speed density tune others prefer to use the MAF sensor. Please discuss this with your tuner. All harnesses will come with all connectors for MAF and 02 sensors, if not used please zip tie out of the way. Our used engine packages will come with MAF sensors, however oxygen sensors are not provided. We can provide you with part numbers or If you would like to purchase these items with the engine package please let us know. 

*Hoursepower and torque numbers are estimates only. Actual numbers may vary. Components provided with custom engine builds may be different than described above.

Additional Information