On a gen4 your saying there is power to be gained by degreeing the stock cams?191, that's better than some i've seen with same mods. put stk ex. cam back at 108, degree int at 110, make sure no advanced timing on mr12, stk to -1 degree best with this fuel, fresh date mr12 tuned to 13.0. these motors can gain/lose 10 hp within 2 degrees cam timing. seen this first hand, same dyno verified.
Maybe you already have best numbers. Gen4 cam durations and large intake ports make it weaker than Honda or Suzuki at low/mid revs. Exhaust with long seconday pipes (like Graves full exhaust) should improve midrange.cam numbers that increase the Mid/Low end on this engine.
Will you post a pic?!Does anybody have cam numbers that increase the Mid/Low end on this engine. I run one in a 1000 lb car and Have not quite got it dialed in. I started with 108/108 with really no gain, Dyno at 176, and slightly lean. I put exhaust back to stock and left intake at 108. It is alot better than stock or 108/108, but still not working as good as my Gen1 and Gen2 had been.