9.4 compression drops to what with 6.0 heads

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Mar 3, 2005 | 08:47 PM

vhgjk123

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Launching!

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From: Tulsa, OK/Gainesville, Fl

9.4 compression drops to what with 6.0 heads

My compression ratio right now is 9.4:1 what will 6 liter heads drop it down to. Also what kind of power gains if any should I expect with these heads. Set up in sig.

Mar 3, 2005 | 08:57 PM

NA$TY-TA

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We need all these specs to even get close whar comp will be...........
Cylinder Diameter (inches)
Stroke Length (inches)
Chamber in cc's ----- stock 6.0L heads are 71.03 i believ or close to that.....
Piston dome in cc's (Dome = positive,
Flat = 0, dished = negative number)
Gasket Thickness in inches (add plus or
minus amount piston is in the hole)

Kyle

Mar 4, 2005 | 05:03 AM

HellRaiser

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From: Bucks County, PA

What compression ratio would it drop it to on a stock LS1?

Mar 4, 2005 | 08:01 AM

Z06PSI

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From: Thomson, GA

Quote:

Originally Posted by NA$TY-TA

3.905 bore
6.125 rods
6.0 L heads unmilled
20cc dished pistons
stock gasket thickness

What is my compression...?????

Last edited by Z06PSI; Mar 4, 2005 at 03:39 PM.

Mar 4, 2005 | 08:09 AM

Got Me SOM

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as a general rule 6.0 heads drop compression a half a point.

Mar 4, 2005 | 10:14 AM

Boostaholic

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http://mtg.homeunix.com/ls1/cr.php

Mar 4, 2005 | 10:44 AM

NoGo

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From: Mass

Quote:

Originally Posted by redrumss

3.905 bore
6.125 stroke
6.0 L heads unmilled
20cc dished pistons
stock gasket thickness

What is my compression...?????

If you are stock stroke (6.125??) then that will give you 8.0:1 compression. You better have big boost in mind with that compression.

-Kevin

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Mar 4, 2005 | 12:53 PM

eviltwins

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Go for it, the motor will feel almost exactly the same as a 9:1 motor, you can just run a shitload more boost on pump gas.

Mar 4, 2005 | 01:06 PM

#10

SUPER DAVES Z

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From: Bastrop , TEXAS

Quote:

Originally Posted by redrumss

3.905 bore
6.125 stroke
6.0 L heads unmilled
20cc dished pistons
stock gasket thickness

What is my compression...?????

It would also give you a 587ci motor

, but I think you ment it will have a 6.125 rod length.
Go to rosspistons.com and look at the calculators, they will get you close enough,( prob around 8.9 to 1).

I don't remember the stroke exactly but I think its 3.422 or something, sorry can't help more.

later,
Dave