Thread: 5.7 5700 vortec power plant
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10-06-2013 02:31 PM #14
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- Zephyrhills, Florida, USA
- Car Year, Make, Model: '32 Henway
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The rules say no guide plates and are very restrictive.....
"OEM stock definition of engine specs are: Max compression ratio 9.0 to 1; Minimum engine vacuum 17
inches HG at 1,500 rpm or less; No grinding, porting or modifying of any component."
At 9.0:1, the camshaft 0.050" duration would have to be under about 210 degrees to produce enough cylinder pressure to move the car gingerly, plus generate 17 inches of mercury vacuum in the intake manifold.
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.Last edited by techinspector1; 10-06-2013 at 02:38 PM.
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Down all day yesterday, up today, shit or get off the pot.
Where is everybody?