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Old 08-08-2011, 07:36 PM
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Dish piston volume for 1977 - 350 V8 ?

I would appreciate if anyone can tell me the dish piston volume for 1977 chevy 350 V8 on my 77 omega/nova. According the manual the compression ratio is 8.5:1. I think the combustion chamber is 76cc.

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Old 08-08-2011, 08:13 PM
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A c.r. calculation, stock 350 bore and stroke, piston .025 in the hole, .041 gasket, 76 cc heads, with 6 cc of dish, basically flattops with valve reliefs, gives you 8.5:1. Zero deck and 11 cc's gives you 8.51. Using that information I'm led to believe they are flattops with one of the above scenarios. But that's a guess.
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Old 08-08-2011, 10:10 PM
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The last stock dished piston 350 I did was -15cc dish volume. The piston sat at .025" below the deck. The OEM motors used a shim style head gasket 4.10 x .015"

The gasket used makes big difference.

Whats stopping you from measuring the dish dimensions and calculating the actual volume. (the valve reliefs them selves are 4 to 5cc)
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