DIFFERENT GUY
I'M THINKING THAT YOU ARE BEING TOOK FOR A RIDE, BUT NOT IN YOUR 'STANG!
I'M NOT MUCH ON HOW THE CAM IS GONNA AFFECT YOUR VACUUM, BUT I'D SPEND $25-$35 ON A "DASH MOUNT" (ON/ UNDER/ WINDSHIELD STRUT) VACUUM GAUGE FROM THE AUTO PARTS STORE.
AFTER YOU USE IT FOR A TEST, YOU CAN STICK IT IN YOUR TOOLBOX, OR MOUNT IT IN THE CAR
IT CAN BE USED NOT ONLY FOR A TEST, BUT YOU CAN DIAGNOSE INTERNAL ENGINE PROBLEMS (BY THE WAY IT ACTS), YOU CAN ALSO "TWEAK" YOUR DRIVING HABITS TO GAIN MORE MPGs
I WOULD OBTAIN THE GAUGE AND TEST THE VACUUM MYSELF
MYSELF, AS A JEEP CJ KINDA GUY, AND HAVE DEALT MAINLY WITH CARBS SINCE I WAS A KID, BACK IN '70s
I CAN SEE CARB ADJUSTMENTS AND TIMING ADJUSTMENTS IMPROVING VACUUM, JUST IN GETTING EVERYTHING WORKING EFFICIENTLY
I JUST DON'T "IGNITION" IS GONNA MAKE THE PISTONS SUCK IN MORE AIR, CHANGING THE CAM MIGHT! (OR MAY NOT) EXPLOSIONS IN THE CYLINDERS ARE EXPLOSIONS, I EVEN THINK THE STOCK IGNITION WOULD PRETTY MUCH BE THE SAME EFFECT
ON A "NORMAL" RIG, 20 Hg OR INCHES OF VACUUM IS NORMAL
AS THE 1st FELLER MENTIONED, LOOK FOR VACUUM LEAKS!
THEY ARE USUALLY THE SOURCE THAT DROPS YOUR VACUUM, LOOSE OR BROKEN HOSES (YOU SHOULD ONLY HAVE A FEW ON A '70), LOOSE CARB, POORLY INSTALLED INTAKE MANIFOLD, ETC!
I BELIEVE I'D LOOK FOR ANOTHER GARAGE TO WORK ON YOUR CAR, IT'S MUCH MORE SIMPLE THAN THE NEWER ONES AND SHOULD NOT COST A FORTUNE (WITHOUT A BREAKDOWN OF WHAT WAS DONE AND PARTS) ALL I CAN BASE THIS ON IS WHAT YOU HAVE SAID
I CAN MAKE RECOMMENDATIONS ON LOOKING FOR A MORE SUITABLE SHOP, JUST ASK ME!
HERE'S SOME MORE VACUUM RELATED STUFF I'VE ANSWERED IN THIS LINK
http://www.2carpros.com/questions/2010-all-other-cars-how-to-change-gears-for-fuel
PAY SPECIAL ATTENTION TO MY PICS OF MY TWO REALLY PERTTY JEEPS WITH IN DASH VACUUM GAUGES!
YOUR TURN, J&N (1ST GUY) AND I WILL RESPOND AS LONG AS YOU DO!
THE MEDIC
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Wednesday, January 21st, 2015 AT 6:41 PM