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#11
12-24-2019, 12:41 PM
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Jim Hand did a technical article regarding the relationship between cylinder pressure, compression and detonation.
From it... "If you were waiting for me to tell you what CR is optimum but "safe" for you, neither I nor anyone on this planet can tell you what is safe." The article was intended to provide some knowledge only to help select the optimum CR based on fundamentals. And further he stated.... "Each case is different in that different quality gas is available, the vehicles are of different weight and have different transmissions and gears, different cams are used, the chambers are prepared differently, and so it goes." Are today's LS motors capable of sustaining much higher compression on much lower octane fuel apples-to-apples with the design of a older Pontiac ? .
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) Best time 5.13 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE |
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