what rpms should i run??? 540ci NA.....
#21
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302 sport , what you can do is get the heads milled down to increase the comp, you can flat mill them down to 113cc chamber, this will a lot with power and efficiency.
#24
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Thread Starter
thats what i was thinking........i was going to go with new intakes this year too. what would my best choice be?? it had victor jr's with 850's and spacers before....
#25
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DART intake are the best
#26
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Thread Starter
does anybody have any real HP numbers for different intakes?? I heard that all of the single plane 4150's are pretty close out of the box
#27
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Go with the Dart single plane now. JimV (Valako race heads) is working with Dart right now to cast his hand ported cylinder heads. The new casted heads will mirror his hand ported heads, with runner volume, raised intake floors and air flow velocity. This should make it cost effective to have hand ported heads within the price of CNC'd heads. He had the first 7 sets casted about 3 weeks ago. This would be a good combo for you.
#28
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Agreed out the box about the same. If your gonna do any porting then have him port match the intake. Not too expensive, and every little bit helps! If your not dynoing, no way to tell which one works better with your combo. Sometimes, a 1" or a 2" spacer under the carb makes a pretty good difference too. But, your not dynoing so doesnt matter.
#30
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Thread Starter