There are a couple possibilities: the head gasket has been re-installed wrong (good candidate), the cam bearing has turned, or there is a blockage of sludge or other material in the oil line.
yes the 4.3L vortech has the same motor mounts as the 350
If the Buick 305 is really a Chevy 305, then the motor mounts will interchange with a Chevy 350.
yes.
No, they will not.
No difference in the engine. It is all in the trans and the rearend
a Chevy 350 engine at idle at operating temp will need at least 6 psi of constant oil pressure to maintain normal engine operation without doing damage to the motor, regardless of the type and weight of oil being used. when the motor is being run above idol, depending on the age and application of the motor, a 350 needs 12-15 lbs of constant oil pressure to keep the motor free of premature damage. tipically speaking if you have 6 psi of oil pressure on a cold motor and good oil, something is worn, damaged, or broken.
No turbo 350's in 1992.
NO. And it won't work in the place of the 97 350 vortec.
No. 5.7, is a 350.
Yes,
No they are not strong enough. No they are not strong enough.
No it is not.