*UPDATE* After a trip down south for the long weekend......still
VERY impressed.
Before we left, swapped out the 585 metric jets for some stock 51's and ran a vacuum test to pick the right power valve.
17 inches at idle

WOW. Wasn't really expecting that with the 4BBL/huge manifold/ PCV & Brake connections etc. on a tired old 186.
I was close with the 7.5 P.V but changed it out to an 8.5 as per standard HOLLEY calculations.
Certainly very crisp and pulls like a schoolboy from down low in the revs, but may have to muck around with the dizzy
as the advance rate is too slow once the vacuum drops under acceleration.
Might just drop the electronic jigger out of the HZ ute and see how close that wants to run
Fuel economy has been amazing....8.5 - 9 litres per 100 kms mixed town/highway, and 9.8 towing the Caravan at 110kph.
The journey continues...........................................
