That engine should have 18 to 21 inches of vacuum at an IDLE. You can find a vacuum source on the intake manifold.
Try a search for vortec engines
In order to set the timing on a 98 Chevy 350 vortex, you have to time with a scan tool that will let you set timing. Or let garage do it
They are basically the same heads, If the 93 350 is a vortex motor.
no
The headers for a 350 and 305 are the same.
NO, Not even close.
no
Late 96 models.
61 psi
Yes their the same block....
That engine has a ROLLER CAM AND ROLLER LIFTERS
18 to 21 inches of vacuum is a normal reading on a vacuum gauge.