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The Water Cooler
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<blockquote data-quote="swampratt" data-source="post: 2720221" data-attributes="member: 15054"><p>Did you do the carb?</p><p>I have been thinking of going to E85, so far it is just thinking.</p><p>So 13.0 compression and slightly radical cam .. cam sounds like a 245@ .050 or so possibly less.</p><p>I have not done any 400" small blocks.</p><p></p><p>Have you checked the cranking pressure on that ..</p><p>I know E85 likes a lot of compression to be at it's best but my theory was all about actual pressures.</p><p></p><p>So I have not seen what the E85 guys run for cranking pressures.</p><p>My old 78 nova with a 350 had 12.02 actual compression and I ran it on 91 octane at 38 total timing and 93 octane got 41 total timing.. this is when the super unleaded was pink. This is with iron heads.</p><p>That engine had a 270 comp cam 224@.050 and had 245PSI cranking pressure.</p><p></p><p>That is why I ask if you have checked yours?</p><p>My current 350 with the 268 comp with a very early closing intake valve has 225 PSI cranking pressure and this is just a tick over 10.5 compression.</p><p></p><p>Sorry I am ate up with it I know.</p></blockquote><p></p>
[QUOTE="swampratt, post: 2720221, member: 15054"] Did you do the carb? I have been thinking of going to E85, so far it is just thinking. So 13.0 compression and slightly radical cam .. cam sounds like a 245@ .050 or so possibly less. I have not done any 400" small blocks. Have you checked the cranking pressure on that .. I know E85 likes a lot of compression to be at it's best but my theory was all about actual pressures. So I have not seen what the E85 guys run for cranking pressures. My old 78 nova with a 350 had 12.02 actual compression and I ran it on 91 octane at 38 total timing and 93 octane got 41 total timing.. this is when the super unleaded was pink. This is with iron heads. That engine had a 270 comp cam 224@.050 and had 245PSI cranking pressure. That is why I ask if you have checked yours? My current 350 with the 268 comp with a very early closing intake valve has 225 PSI cranking pressure and this is just a tick over 10.5 compression. Sorry I am ate up with it I know. [/QUOTE]
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