Yea its a good start. My 388 stroker with platinum plugs I started at .055 and increased .003 until it ran 1/8 the best. I painted about an 1/8 mile in road and used GPS to test. I ended up at .072 and 21 degrees before tdc. For peak tuning.
The difference from start to finish was a gain of 16 mph in the 1/8
but two days work.
Thats not the stroker you see pictured, its 57 312.