[al8apex]

What do you mean by you think it needs more fuel?

Is it running out of RPM?

I run a lot more initial timing that that (more than twice) but you need to know what your total advance is and when it is acheived.

I found the FACTORY jets to be WAYYYYYY to rich for my 1970 Z28 M22 with 3.73's for the street. But if you are only going to run it down the drag strip, your cylinder wall washing richness is ok there, but WAY too fat for the street IMHO and experience.

I took my stock primaries (70) and moved them to the secondaries (that WERE 76) and went to 68's for the primaries, lots more response, crisper and only on severe upper acceleration was it any different than the jets that kept on fouling my plugs during everyday street driving

you could take it to a dyno and get it dyno tuned, that's what they did back in the day