There are 8 freeze plugs.
84 has a vacuum advance 89 has an electronic advance Thats the only diff.
40 FT. LBS
Orange, then light blue, then in 89, black.
.035
10w-40, until 89. Then 5w-30.
NO. Not even close.
No. Not without switching the cylinder heads. I think it was 89, Chevy came out with the 1st generation Vortec heads, which require a different intake.
10w-40 up until 89, then 5w-30.
You are most likely overheating.
In 89, Chevy introduced the 1st generation vortec head. It has a different angle, thus using a different intake manifold, and self adjusting rocker arm.
At the back of the block, near the distributor.
It can be done. Requires experience. Your results may vary.