If anyone cares...I think it's better. Went back to original jets. Went one step colder plug. Had 10 passes all within .015 over 2 days from 930am to 1130pm.

This message has been edited. Last edited by: jay giles,

Jay, good progress. I suggest consistently keeping records of "everything" you are at the point now where several very small things can come into play.

*Consistent staging position
*consistent staging RPM
*consistent temps
*consistent shift RPM
*consistent air pressure

Begin to examine every move you make. Consider if you can improve the above list by .002 each.

quote:

Originally posted by jay giles:
I think it's better. Went back to original jets. Went one step colder plug. Had 10 passes all within .15 over 2 days from 930am to 1130pm.

I’ll assume that you meant .015. If so, this is good . Do you have any Data Acquisition in the car or even a playback tach?

OOPS....yes .015....No none of that. Want to try a MSD grid one day if other stuff quit breaking. Old school I guess now. 6AL. Two step at 4600, shift at 6600...2750lbs..4.56 gear...14-32 tire...8.5-9 lbs...fastest is 6.17.

quote:

Originally posted by jay giles:
Want to try a MSD grid one day if other stuff quit breaking. Old school I guess now. 6AL.

If you ever decide to go with Grid, a $400 MSD 7730 will attach to your present 6al system very nicely.

Then you will have the ability to change shifts in 1 rpm increments and launch in 50 rpm increments.

You will also be able to change timing for the entire run to see if a change will produce better results without physically making the move in your pickup sensor or distributor.

Many that still use analog ignition don’t want to deal with a laptop needed to go to Digital.

looking at the NGK plug in the pic, i would recommend pulling a little fuel and add 1-2 degrees of timing.



Joe

More timing, hotter plug, 3/4 passes on new plugs then cut open post pics, then decide on jetting.