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Z1 Motorsports Stage 3 Z32 TT Head package include:

  1. Z1 HL-15 cam set 270 deg duration .385 lift
  2. Stage 3 Portwork (Considerable material removed from intake and exhaust runners  including heavy combustion chamber and bowl work)
  3. Polished combustion chambers
  4. Intake and Exhaust Valve guides replaced with performance bronze guides
  5. Z1 single coil performance valve springs  
  6. Heads completely cleaned, surfaced
  7. Ferrea 1 mm oversize intake and exhaust performance valves
  8. Z1/ Ferrea Titanium valve spring retainers
  9. High flow radius cut performance valve job
  10. Valves lapped in
  11. Combustion chamber leak down test insures less than 5% leak down past fresh valve job
  12. New Viton valve stem seals 

$500 refundable core charge applies       

View our Core Return Policy and Form.  Please note: Form MUST be included with all Core Returns.

 Z1 Motorsports cleans and reuses stock hydraulic valve lifters in order to keep prices reasonable.    Although this usually results in a quiet running engine with no rattles, Z1 Motorsports does not under any circumstance guarantee hydraulic valve lifters not to make noise or rattle.   New Hydraulic Valve Lifters can be purchased and used in assembly at additional cost.

Port-matched lower intake manifold (plenum) available as an option below.  Core return required.


Available Options:

Core Charge:

New Hydraulic Valve Lifters:

Port matched lower plenum:


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