Quote:
Originally Posted by Nicks67GTO
I could ask them about that. I'm not sure what a 10.5:1 poncho would need for fuel requirements with a modern chamber, cool temps, and that stump puller. Its on a 112 l/s so it should technically be a little more forgiving and the good modern chambers don't usually require as much timing if i'm not mistaken, like maybe 32 degrees is all so that may play a factor too? I wonder if i could get away with some 89 or 90? Thats a good question to ask them regardless.
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I'm running 85 cc chambers on a 462 with KRE heads and can run on 87 octane...Last friday I ran on a mix of 60%87 octane and 40% 91 octane .I'm at about 10.25 :1.