This is an ideal package for those not wanting to add Methanol Injection to their ZL1.  Still gobs of power through the entire powerband - and all on pump 93 octane!  Everything our Stage 3 package includes, with the addition of CNC Ported LT4 cylinder heads.  Your factory cylinder heads have to be removed during a cam swap, so this is an excellent time to upgrade the heads as well.  CNC ported heads increase flow and compliment the camshaft, increasing engine efficiency even more, lowering intake air temps, and increasing horsepower and torque across the board.  Cylinder heads are machined by Texas Speed and Performance on their state of the art 5 axis CNC machines.  Each and every cylinder head is inspected and flow tested prior to shipment.  Heads come assembled with new seats, seals, and springs which are matched to the camshaft we provide.  We keep your stock cylinder heads as a core exchange.  


Includes:

Rotofab  Intake System

Kooks 2" Longtube Header System, Offroad Connections

Innovators West SFI Balancer

9.1" Metco Lower Pulley

Gates HD Blower Belt

Custom Lashway Motorsports Camshaft with DOD/AFM Delete

PRC CNC Ported LT4 Cylinder Heads, Assembled

Taylor Plug Wire Set

NGK Iridium Plug Set

Professional Installation

Custom Dyno Tuning with Graph

Lashway Plate Frame, Badging and Billet Valve Covers/Coil Relocation

(10-Speed Auto Unlock and Tuning Also Available!) 


SUPERCHARGER UPGRADE OPTION:  WE CAN UPGRADE ANY ZL1 PERFORMANCE PACKAGE WITH YOUR CHOICE OF WHIPPLE OR MAGNUSON SUPERCHARGERS!  ASK OUR STAFF TODAY FOR DETAIL, PRICING AND OPTIONS!

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STAGE 4 ZL1 PERFORMANCE PACKAGE (875+ HP)

Product Information

  • Product Number: stage-4-zl1-performance-package-875-hp
  • $11,999.99