Skip to content

🚗 Your People Are Here. Get In.

The internet is full of car content. This is the community.

Cheers & Gears has been bringing enthusiasts together since 2001. Join the conversation, show off your garage, and find your people.

New cylinder heads for the Vette

Featured Replies

Finally got my PRC 215 aftermarket heads today, hot off of the CNC machine. 215cc runner, 60cc combustion chamber, 2.04/1.60" valves, PRC valve springs. Great flow, great compression, great piston to valve clearance. Sadly, my life will be getting in the way of a proper tune/dyno run, it will probably be 6 weeks before I can post results.

CH1.jpg

CH2.jpg

intake port

CH3.jpg

combustion chamber

CH4.jpg

exhaust port

CH5.jpg

customized:

CH6.jpg

total package:

CH7.jpg

pretty. lol

  • 3 weeks later...

PRC215 (averaged to get .550 numbers) ~

311 int / 228 ex @ .550 lift

Ratio : .73

Nice! A smidge better than my Stage II Buick heads:

Stage II SE ~

290 int / 220 ex @ .550

Ratio : .76

These, ported, flow 350/260.

Join the conversation

You are posting as a guest. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

Latest News

Who's Online (See full list)

  • There are no registered users currently online

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.