Jump to content
News
Reviews
Discussons
Activity
Create New...
Close

  • 💬 Join the Conversation

    CnG Logo SQ 2023 RedBlue FavIcon300w.png
    Since 2001, Cheers & Gears has been the go-to hub for automotive enthusiasts. Join today to access our vibrant forums, upload your vehicle to the Garage, and connect with fellow gearheads around the world.

     

New cylinder heads for the Vette

Chevy Nick

By Chevy Nick
in Tech Section

 Share

Recommended Posts

Chevy Nick Newbie

Chevy Nick

Posted
Posted

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

  • 3 weeks later...
balthazar

balthazar

Posted
Posted

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...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing


  • Support Real Automotive Journalism

    Cheers and Gears Logo

    Since 2001, Cheers & Gears has delivered real content and honest opinions — not emotionless AI output or manufacturer-filtered fluff.

    If you value independent voices and authentic reviews, consider subscribing. Plans start at just $2.25/month, and paid members enjoy an ad-light experience.*

    You can view subscription options here.

    *a very limited number of ads contain special coupon deals for our members and will show

×
×
  • Create New...

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.

Hey there, we noticed you're using an ad-blocker. We're a small site that is supported by ads or subscriptions. We rely on these to pay for server costs and vehicle reviews.  Please consider whitelisting us in your ad-blocker, or if you really like what you see, you can pick up one of our subscriptions for just $1.75 a month or $15 a year. It may not seem like a lot, but it goes a long way to help support real, honest content, that isn't generated by an AI bot.

See you out there.

Drew
Editor-in-Chief

I've whitelisted
Continue without support

Write what you are looking for and press enter or click the search icon to begin your search