A question about timing theory

[Tinbender59]

Preface; when I used a normal distributor, i would set up the advance to 36 degrees at cruse, and 8 to 12 inital, for launch. looking at the spark timing in our ECU's "LS1B" I see the exact opposite or am i reading it wrong?? I am really perplexed by this quandry? I am still trying to get the correlation of all the maps and how they work together? I try to relate everything back to my Holly and HEI days, trying to make sense of it all. :Eyecrazy::Eyecrazy:

[joecar]

Which LS1B HO Spark table are you loking at...?

The car LS1/2/3/6 HO tables command about 40* advance at low load and about 24* advance ar WOT.

The LSx heads are designed to be fast burn, so less WOT advance is needed than SBC.

[joecar]

Are you trying to understand how the ignition tables work...? Start with B5913 and read its description, follow links tothe other tables.

[Tinbender59]

Are you trying to understand how the ignition tables work...? Start with B5913 and read its description, follow links tothe other tables.

cool thanks I am running a 411 on a 97 Vortec.

[joecar]

Actually, I meant look at all the tables in the Spark section (I see that B5913 has a brief description).

[Tinbender59]

cool thanks, I'll get a look at it