Moderators please consider these papers in a permanent "sticky" section on the C3 tech forum. They have Been around many years and used by hundreds to tune their new engines and rebuilds
Hey Lars..good to see you here.Timing below 2000 rpm is irrelevant in a performance application provided the engine idles smoothly and has good throttle response off idle. You want the timing curve to start coming in just above idle speed and pull a straight line to 36 degrees at 2500-3000 rpm; you can draw it on a piece of graph paper. Cam specs are also fairly irrelevant - you want to hit 36 degrees total as quickly as the engine can take it without detonatrion regardless of cam, but the 2500-3000 spec works pretty good for every application I have done. A larger cam will want more initial timing than a small cam, but that's about the only setuyp difference. What's a PCM...?
Original copies of the papers with diagrams and correct formatting are available by simply e-mailing me a request for the paper(s) you want:
well, you know how it is, I don't like to take over a room, so to speak....Barry....3 posts in 3 years...you gotta get out more often boy:laughing:
Thanks for updating your site!