Piston CC help
Thread Starter
Drifting
Joined: Jun 2005
Posts: 1,681
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From: Seven Devils NC
Piston CC help
Can someone help me understand Piston CC? When would want a -3 / -10 / -33 CC piston? If you were going to build a 402 / 418 CI NA motor for HPDE / Street use with ported stock heads what would be the typical CC piston used? Does CC change the compression?
Last edited by RaleighSS; Nov 19, 2010 at 10:17 PM.
Pro
Joined: Mar 2010
Posts: 701
Likes: 2
From: Lewisville TX
You would shoot for the least amount of piston relief as long as your not running a really high lift cam that's going to help.
The stock pistons are flat and thats how they got 10.9 compression so any valve relief is going to lower compression so make sure you take that into account.
From what i have gathered the small -3 is for NA motors.
The -33 is a dished piston which is going to be used for Forced Induction.
http://www.csgnetwork.com/compcalc.html This is a link to a compression calculator.
The 2nd to last field is where you put in the valve dome volume (or valve relief as a negative) toy with that and you will see what it does to compression.
I am doing a very similar set up with a 403ci stroker build so ill be curious how we both turn out.
The stock pistons are flat and thats how they got 10.9 compression so any valve relief is going to lower compression so make sure you take that into account.
From what i have gathered the small -3 is for NA motors.
The -33 is a dished piston which is going to be used for Forced Induction.
http://www.csgnetwork.com/compcalc.html This is a link to a compression calculator.
The 2nd to last field is where you put in the valve dome volume (or valve relief as a negative) toy with that and you will see what it does to compression.
I am doing a very similar set up with a 403ci stroker build so ill be curious how we both turn out.
