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Old 08-21-2008, 01:31 AM
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compression ratio

i have an old 350 block and a set of dished pistons. am wondering what comp ratio would be with 383 strocker crank, 5 3/4" rod and a set of vortec heads.
am looking for suggestions for a cam with big torque go to about 5500 rpm
any info would be great thanks tuk

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Old 08-21-2008, 09:10 AM
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vortec heads are 64cc. Look for a 383 piston for a 5.7 inch rod than makes around 9:1 cr. Get a D-shaped dish (cast hyper piston). Use a cam with around 210 to 215 degree on the intake at 0.050" and 8 to 10 more degrees on the exhaust (because vortec heads don't flow well on the exhaust port).

You will need a piston with a -22cc volume.
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