Power Pak's just the beginning - scroll on to uncover the how, the why, and everything you need to know to make game-changing decisions!

VR38 Power Paks

Disassembly and Inspection

We take the disassembly and inspection process very seriously to ensure the highest quality. Each cylinder head undergoes an initial inspection during disassembly, followed by a second inspection by a separate technician to catch any potential issues right from the start.

Even if you provide new cores or disassembled heads, they will still need to be inspected for damage, unless purchased directly from HeadGames. Inspection fees apply to all cylinder heads.

  • For assembled heads, a $250 service charge covers disassembly, inspection, oil plug removal, and flushing in our Ultrasonic, and Wet Blaster. 
  • For disassembled and new cores, a $75 inspection fee applies. Remember, new heads can have issues too!

Cleaning

We’ve put in the effort to deliver the highest standard of surface finish and cleanliness in cylinder head cleaning.

For a factory-fresh look, we offer vapor honing to restore your heads to a like-new appearance.

All heads are thoroughly cleaned using our Wet Technologies wet soda blaster, ultrasonic cleaner, or spray washer to ensure optimal results.

Refresh and Restore Your Heads

We offer a range of specialized services to ensure your cylinder heads are optimized for performance, whether you're restoring or upgrading. Below are the services you can find in the up to 800whp power pak section.

Starting with our Refresh Service, we'll get your heads running like new by cleaning, re-facing valves, refreshing valve seats, setting valve lash, milling, and assembling with new viton valve seals. If your heads are already built, our Aftermarket Refresh provides the same benefits for heads that need a little extra attention.

Performance Upgrades for Serious Power

Looking to make more power? We have you covered! These services are available in the 800-1200whp and 1200+whp range.

Our Pocket Port and our Pocket Port R Service offers a cost-effective way to enhance the area under the curve, especially for builds in the 800-1200 WHP range, all while keeping your boost levels in check. Finally, if you're making enough power to use it, our CNC Port Service is the ultimate upgrade, providing up to 100 WHP gains in the mid-range, faster spool time, and unmatched reliability.

Oversized Valve vs. OEM size Valve

When it comes to the VR38, bigger isn’t always better—until you’re making serious horsepower.
At HeadGames Motorworks, we offer oversized valve installations, but only when it actually matters: 1800 WHP minimum. Truth is, oversized valves aren’t needed until you’re chasing 2000+ WHP, but for those pushing the limits, we’re ready.

For builds at 1800 WHP and up, we upgrade to the GSC Power Division 6.5mm exhaust valves—a move we've proven on YouTube to deliver superior airflow compared to off-the-shelf options.
This upgrade boosts area under the curve, sharpens response, and helps your turbo spool faster, where it counts.

Bottom line:

  • Oversized valves? Only if you're pushing 1800 WHP or more.
  • Truly needed? 2000+ WHP and beyond.
  • GSC 6.5mm exhaust valves? The edge you need to leave others in the dust.
  • Real gains. Real performance. No gimmicks.

Built for the elite, installed by the obsessed.