any 6 pak gurus out there?
rep. that's not good news. this combo was purchased as a matched set, or so I am told.and was promised it would run like a scalded cat the heads have had some extensive porting, also so I am told. it does look like it..maybe mrmopartech will chime in and tell me how great this combo REALLY is.?
I agreed with that post on the vacuum issue, nowhere near as high as it should be, not even close. It doesn't matter what intake & how many carbs You've got. At idle, it
doesn't matter, as long as the timing (cam & ign.) & the mix is right You should have at least 3"Hg more vacuum than that. They swap 6bbls. on for these "Dyno Tests"
all the time, & don't even try to tune them because it's a PITA, and this is never a result of just tossing one on.
AND, they perform very well OOTB w/o porting or any jet
changes. Something ain't right. Hows the pushrod length/lifter preload? As stated, vacuum leaks anywhere? Why is it rich, black smoke out of the pipes, or stink/stinging
eye syndrome? What do the plugs look like now? What is the initial timing????????? On a well developed engine the 6bbl. may be less than ideal, but it ain't chokin' a set
of 318 heads no matter how well they're ported.
