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Need help on finding out CR on this motor

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Old 08-02-2007, 03:49 PM   #1
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Default Need help on finding out CR on this motor

It is a 5.3 block bored to 5.7
stock 5.7 piston,rod,crank
heads are a 58.5 cc 241 milled
head gaskets are the fel-pro not the mls
I thinking 10.8 or 11.1
help me out
thanks Wicked 1
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Old 08-02-2007, 07:25 PM   #2
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Try this
http://www.c5frc.com/calculators/Com...Calculator.htm
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Old 08-03-2007, 09:05 AM   #3
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thanks randy ws6
IT IS 11.5 to 1
What will work for me
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Old 08-03-2007, 09:33 AM   #4
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That sounds o.k., but you will haft to use 93 oct. fuel with that compression
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Old 08-08-2007, 01:06 PM   #5
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With The Heads Being Milled That Far Do I Need To Run A 7.350 Pushrod ?
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