Breaking in the rebuilt 360. I am having issues getting the EGR to function correctly.
Engine is rocking an Edelbrock performer egr intake and a summit 4bbl.
1st issue was vacuum present at ported source at idle.
Got that fixed by lowering curb idle and bumping timing.
Now no vacuum at idle on ported source. However, hooking egr causes stumbling just off idle, and really rears it's ugly head at decel, sometimes killing the engine out.
I need a vacuum delay valve.
Problem is, no place has those items in stock. They are not available to order.
I'm wondering if they'd even alleviate the decel issue. They'd have to shut off the vacuum quick.
What was used on the 90-91 system with the transducer would be sweet.
Even if I could find used, I'm not even sure if the 90-91 setup would fit the egr port on the edelbrock intake. The older version of egr valve does.
Thoughts?