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| The Pub For General Automotive Related Talk |
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11-03-2024, 10:11 PM
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#1 | ||
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FF.Com.Au Hardcore
Join Date: May 2006
Posts: 1,105
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Please advise....What is the difference in compression of the open and closed chamber heads of a stock engine?
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12-03-2024, 12:02 AM
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#2 | ||
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The Destroyer
Join Date: Jun 2007
Location: Gold Coast
Posts: 2,253
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on the clevelands it was 8.0:1 for open and 8.8:1 for closed. the closed chamber head have a smaller combustion area but that doesnt mean other areas of the chamber arnt altered to make the same compression, valve relief for example. the 302w only had the closed design and it was the 351w that got both over the years and significantly changed size in the smog era.
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Toy- Blown XR8 Ute. Black on black "Front-drive cars are for children" |
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12-03-2024, 08:34 PM
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#3 | |||
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FF.Com.Au Hardcore
Join Date: Jan 2010
Posts: 11,325
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Quote:
https://www.diyford.com/ford-cylinde...e-small-block/ |
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302 Windsor compression rates.
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