January 31, 20206 yr comment_721478 i'm thinking of getting a 285 or a 275 cam i have c dish pistons 40 thou oversize , 3k head and compression ratio 10.5 1. I haven't decided on what carby maybe twin 40 side drafts or a single i don't know if twins would be two big. Report
February 1, 20206 yr comment_721486 If you are constantly running 98 premium you could easily get away with 11:1 and a bit static comp. You'll need upgrade valve springs for either. Twin 40's would be close to right. 38mm bike carbs work well with real similar combos. Report
February 2, 20206 yr Author comment_721492 20 hours ago, kickn5k said: If you are constantly running 98 premium you could easily get away with 11:1 and a bit static comp. You'll need upgrade valve springs for either. Twin 40's would be close to right. 38mm bike carbs work well with real similar combos. What valve springs are the best to use in a 3k head? Report
February 10, 20206 yr comment_721535 On 2/2/2020 at 2:22 PM, chris76 said: What valve springs are the best to use in a 3k head? Any of the 3k to 5k upgrade springs fit all the k heads. What are the best? Consult the cam grinder who is doing the camshaft, they will know what pressure you'll need. Edited February 17, 20206 yr by kickn5k Report
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