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Valve Recommendations

Making 2000whp+ reliably with an 2JZ is not easy but HeadGames has done it! You will need to upgrade the material of your valves to the highest grade inconel to withstand all the boost you can throw at it!
Is a bigger valve better? Nope, we will not install an oversized valve in a 2JZ. We have made 2200whp on stock size valves! Street car can run a stock size valve up to 1800whp, drag car can run stock size up to 1500whp.
Our parts combination for 2000+whp is derived from years of being a part of record setting, race winning cars to nail down the best, the most reliable parts and services that have become a staple in the 2JZ Racing community.

A common concern when picking out a spring kit is adding too much spring pressure, especially in street applications. When it comes to the spring, more pressure is better than less pressure. Less pressure will result in valve float which can cause damage to your valve-train.
The correct amount of pressure will keep the springs controlled which in turn controls the valves. The number one cause of valve-train and or cam/bucket failure is not having the correct valve spring for your application. DLC won’t save you, it will only take longer for the failure to happen. If the valve spring is not happy, nothing will be happy.

Are you planning to set world records or make big power?! If so the GSC R2 or R2M camshafts will get you there. These cams lead to lots of area under the curve. We have used these cam up to 2500whp, and have set world records with them as well!
Take note! For any of these cams to function properly we do our clearance the head for the lobes. We also spec out the valve spring and the rest of the combination for a race season of reliable beatings!

Buckets (aka lifter valves) are wearable items. The number one cause of valvetrain failure and or cam/bucket failure is not having the correct valve spring for your combination. If the valve spring is not happy, nothing will be happy. DLC won’t save you, it will only take longer for the failure to happen.
If you are shopping for heads because of a recent engine failure, it is likely your bucekts will need to be replaced. Especially if you are upgrading to a new cam.
HeadGames can polish them, if they pass our inspection, great! We will not reuse buckets that have any kind of wear, this is a recipe for failure.

If you’re making more than 2000whp+ we suggest moving to our CNC race port.
The race CNC port gives you room to grow. We have made 2500+whp and have set many world records with our race CNC ported head! It really is a powerhouse!