Looking for someone to look at datamaster file & give advice

[Fast355]

yep fast355 you were right. I may flash to that timing table you posted for the lt4 hotcam and see how it likes it.

The one I posted was a vortec truck with LT4 cam and iron vortecs. The aluminum head reverse cooled hotcam LT1 will want even more timing.

At the 95-100 kpa range I would run no less than 16 by 1,000 rpm and quickly start tapering up by 1,200 rpm, I would suggest starting with 34° total and having it full in by 2,600-2,800 rpm. Once you get upstairs over 5,200 rpm and the cylinders stop filling as well it will probably want 36-38° by 5,600-6,000. Keep your air/fuel ratio a little fat in the 12.2-12.6 range.

You could almost use the table I posted if you added 4° overall to it and maintained 4° PE spark through redline.