Update: 3rd transition hole drilled

[68gt500]

After a couple of weeks of forced downtime due to work, I found some time to add the 3rd transition holes to my IDAs.

Up to now I had a huge flat spot (lean) when accelerating slowly from 2000-toward 3000. The rest was pig rich.

With no other changes it is vastly improved, the flat spot is gone and the throttle response just amazing.

Next steps will be leaning both the idle and the main.

How many jet sizes should I reduce to go from an AF of 11 to 13 ? Is there a table somewhere ?

On the idle what is the difference between enlargring the air vs reducing the jet size ?


Any Ideas ?

[68gt500]

I managed a breakthru on the power brakes, I have a working setup with 8 small hoses going to the intake runners and joining in a plenum. To reduce pulsing I put a 2mm restrictor in each hose and it works just fine.

Next step is hooking up the heater & AC controls - after that I am still considering hooking up the PCV..


A little Update on the on going jetting work:

Reduced the Idle jets to 65 - the Cruise AF is down to 13.5 but full power still at 12. Drives nice & smooth actualy

Next steps will be:

- Increase the idle holder air bleed fromm 100 to 120
- Reduce main jet from 150 to 140

[Clois Harlan]

Mike,

I have gone back and re-read some of your post and it sounds as though you are well on your way to having a very nice collectors car. Good luck with the final stages of your restoration.

Clois

[68gt500]

Thanks for the kind words Clois,

the restoration was finished like 12 years back - I have just been enjoying, driving and upgrading it along the way.