Without access to a dyno yet doing a lot of tuning just by what the engine is doing and that ALDL cable sensor readings. I have a question on how hot the headers should get. I've got stainless steel headers on my engine. If the timing is screwed they glow red. I always shut it down right away. But I have to pull the timing wire and set the base timing to 0 Degrees. That is enough time for the pipes to turn red hot. So I have the base timing set to 0 degrees at idle. With the timing wire plugged in an the ECM in the loop the timing is about 16-18 degrees at idle. In the complete dark which is easier to see when they start to glow red the 2 center pipes start to glow. Its not a bright glow and you can only see it in the complete dark but you can seem them start to turn red. I know some people are able to tune based on exhaust gas temperatures. I'm just wondering if we have any people in here that know what EGT of sbc should be?