What is the torque on a BBC rocker arm stud?
50 ft.-lbs.
Big Block Chevy Torque Specs
| Fastener Type | Torque Specs |
|---|---|
| Screw-In Rocker Arm Studs | 50 ft.-lbs. |
| Intake Manifold Bolts (Cast Iron Head) | 25 ft.-lbs. |
| Oil Pump Bolt | 65 ft.-lbs. |
| Cam Sprocket Bolts | 20 ft.-lbs. |
What happens if rocker arms are too loose?
With broken or loose rocker arms, the exhaust valves and intake valves can’t function correctly and the cylinder associated with the faulty rocker arm will be disabled. This will ultimately limit the performance of your engine and your ability to drive the car smoothly and safely.
Are there valve adjustments on the rocker arm motor?
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.
Are the intake and exhaust rocker bolts the same length?
They are different lengths. GM recommends new lower intake bolts, and have updated the torque specs on the rocker arms and lower intake bolts. The intake and exhaust rocker / Pushrods are labeled in the picture below.
What is the difference between push rods and 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 the rocker arms and lower intake bolts.
What are the specs of a GMC LA1 3400?
GM 3.4L LA1 (3400) Specifications Application Specification Specification Application Metric English Engine Type 60° V-6 60° V-6 Displacement 3.4L 204 cu in