I doubt you will notice any difference unless you remove your turbo and run it naturally aspirated
Well, I thought I'd report that it did apparently, make quite a noticeable difference!
Engine started and idled fine, but smoked ungodly, missed and backfired trying to give her fuel. Shut it down and after checking fuel supply, ofv, timing, injectors, etc, and making a few minor adjustments, same thing, but not as bad. Coaxed it up over 2000rpm and, holy crap, she came alive! This thing has lots of power up top! Went back and checked cam again a little closer. Use valve drop method for tdc with indicator on spring and getting equal valve deflection both sides in clockwise rotation, eliminating backlash, I tweak tdc a half degree. I modified a 24 valve pushrod to precisely center indicator at a near perfect straight angle and take readings at almost every .010 of cam lift on both valves lobes and record in crank degrees. As the cam industry decided decades ago, centerline is midway between .050 lift at cam, where changes in lift/degree is the least, that is what I used. All the cam calculators I've found, and leading cam sites and engine builders agree. In the end, I have a 182/210 with lsa 107, not advertised 106. Older cam so exhaust advanced more than realized with just intake numbers. My bad. Who really knows how anybody saying whatever icl is best came up with that number? After lots of research and looking at valve event timing, I totally agree with one well known member on here that 98 icl would do well, especially at 106 lsa. That is what Colt now calls for at 106 lsa, but Geoff couldn't say how those that recommended that icl took their measurements. Waiting on key to retard cam 3.6 degrees to 98.6 and bring exhaust more in line. Compared to what I could find on Ham 181/219/lsa 107 at 98 icl valve events, intake events will be real close, with ex opening about 4 degrees later and closing 4 earlier. Should be able to adjust that a little with valve lash if needed. That should take care of backfiring and improve boost. We shall see! Sure, I should have set it at 98, 99, or so to start with, but now I do have a better understanding of valve event timing, and knowing that is the most critical factor, should be able to set next cam more spot on.
