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1977 Chev/GMC Truck 350 5.7L Low Vacuum, No Power
Posted to GM Driveability on 7/2/1998

hi guys!

I post this for my friend. customer bought the new 350 engine from Kragen. this is 8 cylinder engine. the old one is 6 cylinder. the problem is low vacuum all the time steady at 15. if you snap the throttle and hold it there, vacuum drop all the way ...

 
Message Closed w/FIX

car Vehicle Data

1977 Chev/GMC Truck 350

VIN 0028EDFGUP
Engine5.7 L / 8 cyl
SymptomsLow Vacuum, No Power
OccursAlways
Message Closed w/FIX

car Vehicle Data

1977 Chev/GMC Truck 350

VIN 0028EDFGUP
Engine5.7 L / 8 cyl
SymptomsLow Vacuum, No Power
OccursAlways