I am curious as to which is better for towing with turbo I have read tons of the threads but most are very old and instead of posting in one of them I am starting a new one I am after towing performance and do not care about max HP I am after torgue.
@typ4
They are very comparable from what anyone could tell without a direct dyno comparison, however Russ' cam has been around much longer and his gains are a bit lower in the RPM range. Justin was going more for upper end performance and drivability, and Russ had the lower end plus drivability in mind.
That said Russ' cam will pull hard to redline when needed, from all accounts. Getting the correct valve recession is absolutely key here, as you already know.
That all said IIRC the difference was only about 300 RPMs between the two cam profiles but that's enough to make a difference.
This was all based on dyno runs of pickups with the cams and similar turbo setups, but of course not apples to apples really since IP tuning and other small changes make such a difference. But going on when the curves really start moving above a maxed out stock cam run for comparison you got an idea of when the cam really came to life.
Hope that helps some, we just don't have any direct comparisons since it's so much work to change a cam. Nobody does it without changing 5-10 other variables too.
