Our 5VZ cylinder heads come in two options: the Pro Series, which undergoes advanced porting for maximum performance, and the Street Performer Series, a cost-effective yet powerful option for daily drivers. Both sets offer higher spring pressure to support higher lift cams without coil bind. Each head is designed to provide perfect compression and durability, making it an excellent choice for both stock and modified 5VZ engines.
5VZ Cylinder Head FAQs
What is the benefit of upgrading to the Pro Cylinder Head Set for my 5VZ engine?
Upgrading to the Pro 5VZ cylinder head provides performance gains through advanced porting and lightweight stainless steel valves, which enhance airflow and increase horsepower. These fully assembled heads are perfect for maximizing the potential of a modified engine setup.
Will I need new head bolts with my 5VZ cylinder head replacement?
Yes, we recommend using new head bolts or our head stud set for the best sealing and longevity. Reusing old head bolts can compromise the seal, especially if they’ve stretched over time.
How can I ensure a good head gasket seal with my new cylinder heads?
Our heads are designed with a precisely flat surface to provide an excellent seal with MLS head gaskets. Using a new head gasket and ensuring the mating surface is clean and free of debris will help maintain perfect compression and prevent leaks.
What kind of testing do these 5VZ cylinder heads undergo?
Each head goes through vacuum testing to verify airflow integrity and is pressure tested to ensure they meet durability standards, giving you peace of mind with your new head replacement.
Do I need to perform a valve job on these heads before installation?
No, our 5VZ cylinder heads come fully assembled with precision-installed valves, springs, and valve stem seals, so no additional valve job is necessary before installation.
Are these 5VZ heads compatible with aftermarket camshafts?
Yes, the Street Performer valve springs in our 5VZ heads support higher lift cams without coil bind, making them compatible with many aftermarket camshaft options.
