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Compression ?

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Old 05-02-2004, 01:57 PM
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Default Compression ?
I have a 6.0 block with 5.7 heads. Because of the pistons I put in the motor, the Compression came out to 11.85. I have a set of 6.0 heads on the way that have no flycuting done. What will my new CR be with the 6.0 heads?
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Old 05-02-2004, 02:01 PM
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What size CC??
Stock unmilled 6.0 are like 71>72 cc and that will net you around 9.3>9.1 respectively with a stock graphite gasket.
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Old 05-02-2004, 02:22 PM
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Originally Posted by PREDATOR-Z
What size CC??
Stock unmilled 6.0 are like 71>72 cc and that will net you around 9.3>9.1 respectively with a stock graphite gasket.

The CC is stock I believe 71.06
I know what a stock LS1 with stock 6.0 heads would be but what I am wondering is what the compression would be with my setup. It is a 410 Cubic inch motor and with stock LS1 heads the compression is at 11.85.
I am trying to figure out how much compression I will loose when adding stock 6.0 heads. (Of course when the heads are done they wont be stock, but for now this is what I am needing to know.)
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Old 05-02-2004, 02:35 PM
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oops didn't read that! What kind of slugs?
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Old 05-02-2004, 02:49 PM
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Originally Posted by PREDATOR-Z
oops didn't read that! What kind of slugs?

What is a slug?
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Old 05-02-2004, 03:23 PM
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Pistons! dished? flat tops? domed? half moons?
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Old 05-02-2004, 06:31 PM
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Originally Posted by PREDATOR-Z
Pistons! dished? flat tops? domed? half moons?

Never heard that name before. They are flat tops.
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Old 05-02-2004, 06:41 PM
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http://www.rosspistons.com/calculator.php
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Old 05-02-2004, 06:51 PM
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Originally Posted by jrp

Damn this almost worked. I am smart enough to get the right cubic inches but not smart enough to get the right compression.
Damn.
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Old 05-02-2004, 06:58 PM
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Originally Posted by JZ'sTA
Damn this almost worked. I am smart enough to get the right cubic inches but not smart enough to get the right compression.
Damn.
no offense but if you cant figure it out how are we? how many cc's are the pistons domed, are you using stock gaskets as well or a different size.
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Old 05-02-2004, 07:01 PM
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just got your pm.

your not entering the CC's of the piston dome. i.e 8, 10, 12 ect. also that gasket is way thin
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Old 05-02-2004, 07:08 PM
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i come up with 11.7 CR using stock gaskets, 0 deck height and flat top pistons but you said your were domed.
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Old 05-02-2004, 07:08 PM
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Originally Posted by jrp
no offense but if you cant figure it out how are we? how many cc's are the pistons domed, are you using stock gaskets as well or a different size.


Stock gaskets. The piston's are flat top's and therefore wouldn't have any dome correct???
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Old 05-02-2004, 07:11 PM
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With a flat top what should I enter in that field?
And what is the size of stock head gaskets?
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Old 05-02-2004, 07:15 PM
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Originally Posted by JZ'sTA
With a flat top what should I enter in that field?
And what is the size of stock head gaskets?
pm sent. i thought you said they were domed not flat toped. flat top would be 0. stock graphite gasket compresses to .052-.054
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Old 05-02-2004, 07:21 PM
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Originally Posted by jrp
pm sent. i thought you said they were domed not flat toped. flat top would be 0. stock graphite gasket compresses to .052-.054


Cool I figured it out. I was missing a 0 in the head gasket part. I entered .xx when I was supposed to enter .0xx (.054)
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