How to replace intake gaskets on GM 3400?
How to replace intake gaskets on GM 3400?
To replace intake gaskets what is the procedure for installing correct length push rods in the right spot and valve adjustment after taking push rods out of way to get gaskets. I am former gm tech years ago, now heavy truck. Thank you for the generous Tip / Donation. Answer:
What should I know about the rocker arms?
Rocker arms are just torqued to specs. The most important thing is that the push rods are installed correctly. They are different lengths. GM recommends new lower intake bolts, and have updated the torque specs. On rocker arms and lower intake bolts. More Questions For… The intake and exhaust rocker / Pushrods are labeled in the picture below.
Can you gain horsepower by changing rocker arms?
For instance, a 1.5:1-ratio rocker arm will move the intake or exhaust valve 1.5 (1 1/2) times the amount of lift delivered by the camshaft. In other words, if your camshaft has a lift of .500-inch, when we multiply that by 1.5, we know that the valve moves .750-inch.
What happens when you increase the rocker arm ratio?
Although this distance varies from engine to engine, a typically safe PTV clearance is approximately .050-inch on the intake side, and .090-inch on the exhaust side. Increasing the rocker arm’s ratio can also cause coil bind to occur. Since we know that increasing the rocker arm ratio means increasing valve lift.
To replace intake gaskets what is the procedure for installing correct length push rods in the right spot and valve adjustment after taking push rods out of way to get gaskets. I am former gm tech years ago, now heavy truck. Thank you for the generous Tip / Donation. Answer:
Rocker arms are just torqued to specs. The most important thing is that the push rods are installed correctly. They are different lengths. GM recommends new lower intake bolts, and have updated the torque specs. On rocker arms and lower intake bolts. More Questions For… The intake and exhaust rocker / Pushrods are labeled in the picture below.
Are there aftermarket cams for GM rocker arms?
Stock GM Rocker Arms – GM Rocker Arms are not designed/engineered to accommodate aftermarket cams or higher spring pressures. At a minimum AFR recommends using Bushing Trunion Kit. Other available options are aftermarket kits from Yella Terra, Scorpion or Hardland Sharp. Without the proper parts you will experience accelerated guide wear.
Can you adjust the rocker arms on a Chevy small block?
Answer: There is no special valve adjustments on this motor as was the case with the older Chevy small block. Rocker arms are just torqued to specs. The most important thing is that the push rods are installed correctly. They are different lengths.
