YES they are.
There are no adjustments on a stock Pontiac valvetrain. You simply torque them to 20 ft lbs. Pontiac did not use locking rocker arm nuts. Any attempt to adjust them like you do a Chevy will result in the rocker nuts backing off.
Under the rocker cover.
how do you adjust the timing on a 1977 350 Chevy engine k-10
Look for a plug or cap in one of the rocker covers.
It has adjustable rockers.
PUSH rods and rocker arms... yes.
Probably a sludge problem.
Rocker arms are set to a specific preload or backlash on v8 Chevies. There is no torque specification.
You could remove the rocker covers and watch for a rocker that is not moving up and down as much as the rest.
If it has the factory hydraulic camshaft there is no gap or backlash.
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.
How do I change from standard rockers an push rods to roler rockers
It's usually a rubber plug in one of the rocker covers.
You don't it's controlled by the ECM
There are no torque specs for a 350 Chevy. Follow the valve adjustment instructions in any repair manual for any small block Chevy.
probably need to adjust your valves
There isn't a torque setting. You adjust the valves by tightening each rocker arm until there is no clatter and then tighten them 1/2 turn more.
The stock rocker arm ratio for a Gen I Chevy small block is 1.5:1. The marine engines have the same rocker ratio, but use different cams and have bottom ends built to handle sustained RPMs.
Which side they came from, where the push rods came from and if you remove the rockers remember which rocker went where
If it has center hold-downs on the rocker covers, it's probably a roller cam.
you can't... there is none...95's have fuel injection...
That requires an obdII engine scanner.