Quote:
Originally Posted by MikeK
Which Stipe 340 cam? If it is the Stipe IB 340 you won't be making that much horsepower with what you've spec'd. (IB stands for 'Improved B'). If you get one of the the Stipe Road Runners, like the RR340, which is a more agressive cam, you may reach your coveted 70hp. You can see the spec's for the IB340 and the RR340 cams on Vince's website.
Keep in mind a lot of horsepower or torque in an A is useless unless it has a very wide power band, necessary because you have only three widely spaced forward gear ratios. Unfortunately, mods to increase power inevitably raise the RPM for power peaks and narrow the band as a percentage of operating range. Increased HP also becomes diminished in effectiveness if the power peaks are thousands of RPM above stock because you will not be able to shift that non-synchro trans quickly enough to keep on top of that power band.
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All very true! For optimum performance, you need to maximise the area under the power/RPM graph. Going for max horsepower raises the curve for a narrow rev range, sure and that increases the area under the curve at that point but also makes it lower elsewhere which reduces the area on other parts of the power curve. You win in one place, you lose elsewhere so it's a balancing act.