Race-1
604 New Engine Check List — (Shop Prep)
Questions or Problems contact us at: Ph.: 330-540-7223 or email brad@race-1.com
(all information below is a recommendation from Race-1 not necessarily from GM)
- Inspect Intake manifold installation---straight and square
- Check factory seals for damage and correct installation
- Leak Test Cylinders: 15% is acceptable (if rings are leaking, 25% is acceptable)
- Inspect Cylinders for Debris and proper crosshatch (Bore Scope)
- Inspect lifter bores for proper clearance
- Inspect fuel pump pushrod bore for debris and burrs
- Place paper covers over valve cover stickers
- Remove Rockers and pushrods
- ****CHECK Posi-Lock threads and studs for low percentage of thread****
- Back the set screw out on posi-lock
- Check torque on head bolts—65 ft/lbs. (No specific order is necessary)
- Check Torque on Rocker Studs –55 to 58 ft/lbs.
- Check rear galley plugs above camshaft (1/4” square).
- Check head plugs on the side of the heads in between ex. Ports (5/16 square)
- Locate Exact TDC
- Stamp desired Timing Marks –Paint Balancer and Highlight Marks
- Install qualified valve springs –check installed heights (1.785 MIN.)
- Install oil pressure fitting
- Check oil pan bolts for tightness-** (Seal Left Side Pan Bolts)**
- Check rear seal housing fasteners for tightness
- Remove long T-cover bolt (fuel pump side); remove 80% of the head and reinstall
- Check remaining Timing cover bolts for tightness
- Check oil drain plug for tightness
- Add silicone sealer to the factory dipstick hole
- Remove thermostat –never seize bolts and reinstall housing
- Remove oil filter adapter gasket and reinstall adapter (bypass out)
- Fill and install filter—fill oil to proper level
- Lube roller on rocker and put in place pushrods and rockers
- Prime Oil system until oil is flowing from ALL pushrods
- Adjust Valves with primer running to ensure proper flow and volume
- Glue the gaskets in the covers and install valve covers
- Turn the Breathers— the shield should be towards the front of the engine.
- Completely wipe the engine down of any external oil
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