Typically hydraulic lifters don't get adjusted, they just get tightened to the rocker stud.
There is no valve adjustment. Valve clearances are maintained by hydraulic lifters. (This is typical GM method).
Yes u do to remove the lifters
Most likely the "knock" is more of a "tap". Especially if it's a roller cam motor. GM stock hydraulic roller lifters are notorious for cold engine noise. Other than that, in earlier motors, GM had an issude with piston slap (www.gmpistonslap.com)
Yes.
Very dependable, reliable. It's a simple, cam-in-block, pushrod OHV design, with hydraulic valve lifters that it shares with the GM V8 lines of the same years. It's very easily overhauled, repaired and tuned, and the parts are inexpensively and widely available. It's an excellent engine for any chassis in which it fits, including trucks.
The Chevrolet 350 engine (1967-2003) uses adjustable hydraulic lifters that are individually adjusted by means of the rocker arm nut. The rocker arm nuts are not torqued down. Typically the rocker is tightened down to 0 lash then the rocker nut is turned in one full additional turn.
The 3.4 GM engine tapping noise is often associated with issues like valve lifter problems, worn engine components, or insufficient oil pressure. This noise can indicate that the lifters are not properly lubricated or that there is excessive wear in the valvetrain. It may also arise from a malfunctioning timing chain or belt. Addressing the underlying cause promptly is essential to prevent further engine damage.
7.414 pounds/gallon. Generally hydraulic oil is given as 0.89 gm/cc and 1 gm/cc = 8.33 lbs/gal.
In GM trucks or new GM cars, the 8th digit of the VIN # is the Engine.
Some of their mounts are, for example the Chevy Venture minivan uses hydraulic filled mounts.
GM's self-leveling load suspension system uses air or hydraulic components to automatically adjust the vehicle's ride height based on the load it carries. Sensors detect changes in weight and height, and the system activates air compressors or hydraulic pumps to inflate or adjust the suspension components, maintaining optimal clearance and ride quality. This ensures stability and comfort regardless of the load, enhancing handling and safety. The system is particularly beneficial for vehicles frequently carrying heavy loads or towing.
GM?