Rocker Arms - All

Complete replacement of all rocker arms on the 302ci V8, including valve cover removal, pushrod removal, rocker arm stud inspection, and valve lash adjustment.

Warnings

Tools required

Parts

• Rocker arm set (16 pieces for 302 V8) × 1 — Use OEM specification or aftermarket equivalent
• Valve cover gaskets (pair) × 1 — Ford small block valve cover gasket
• Valve cover grommets × 1 — Rubber grommets for valve cover bolts
• Rocker arm nuts (7/16"-20 if not included with rocker set) × 16 — Ford small block rocker arm nut
• Rocker arm studs (if replacement needed) × 16 — Ford small block rocker stud 7/16"-20
• Engine oil × 1 — 10W-30 or 10W-40 conventional
• Oil filter × 1 — Use OEM specification
• Gasket sealer (RTV) × 1 — High-temp RTV silicone

Fluids

• 10W-30 or 10W-40 conventional engine oil — 5 qt

Preparation

1. Park vehicle on level surface and engage parking brake.
2. Disconnect negative battery cable.
3. Allow engine to cool completely if recently operated.
4. Remove air cleaner assembly and set aside.
5. Disconnect PCV valve hose from driver side valve cover.
6. Disconnect spark plug wires from spark plugs and label for reinstallation (optional but recommended).
7. Remove any brackets, hoses, or wiring attached to valve covers.
8. Place oil drain pan under engine in case of spillage.

Procedure

1. 1

   Remove valve covers
   Remove the valve cover bolts from both valve covers. The 1972 302 typically uses 4 bolts per valve cover. Carefully lift valve covers straight up to avoid bending. If covers are stuck, gently tap with a rubber mallet or use a pry point (not on gasket surfaces). Inspect valve cover gasket surfaces for damage.
2. 2

   Drain engine oil
   Position drain pan under oil pan drain plug. Remove drain plug and drain engine oil completely. This step can be skipped if oil was recently changed, but fresh oil is recommended after rocker arm replacement. Reinstall drain plug hand-tight for now.
3. 3

   Document valve train configuration
   Before removing any components, visually inspect rocker arms for wear, cracks, or damage. Note the orientation of rocker arms on studs. On the 302, the stock rocker arms are lubricated through the hollow pushrods; orient each rocker arm so the pushrod seat cup faces the pushrod and the valve pad faces the valve stem tip. Take photos if helpful for reassembly reference.
4. 4

   Loosen all rocker arm nuts
   Using a socket, loosen all 16 rocker arm fulcrum bolts (8 per side) approximately 2-3 turns to gradually relieve valve train tension. Do not remove completely yet.
5. 5

   Remove rocker arms and pushrods systematically
   Starting with cylinder 1 (front passenger side on Ford V8), completely remove the rocker arm fulcrum bolt, then remove the rocker arm and fulcrum seat. Lift out the pushrod and place in magnetic tray or cardboard holder in order. Repeat for all 16 rocker positions. Keep pushrods in exact order if reusing them. Inspect each pushrod for wear, bending, or tip damage.
6. 6

   Inspect rocker arm studs
   Examine the rocker arm fulcrum bolt bosses on the cylinder heads for cracks, stripped threads, or damage. The 1972 302 uses non-adjustable rocker arms retained by fulcrum bolts threaded directly into the cylinder head (positive-stop design). If any threaded boss is damaged, repair with a thread insert (Heli-Coil) or replace the head as needed. Verify the threads are clean and undamaged before reassembly.
7. 7

   Clean valve train components
   Spray brake cleaner on all rocker stud areas, pushrod holes, and valve stem tips. Wipe clean with shop rags. Remove any carbon buildup or sludge. Clean valve cover mating surfaces on cylinder heads using gasket scraper, being careful not to gouge aluminum. Clean valve covers thoroughly.
8. 8

   Prepare new rocker arms
   Unbox new rocker arms and inspect for manufacturing defects or damage. If using stamped steel rockers, verify oil holes are present and clear. If using roller rockers, verify needle bearings rotate freely. Lubricate the rocker arm saddle (where it contacts the stud) and the valve stem contact point with fresh engine oil or assembly lube.
9. 9

   Install pushrods
   Coat each pushrod tip with engine oil or assembly lube. Install pushrods back into their original locations (or new pushrods if replacing). Ensure each pushrod seats fully into the lifter cup below by rotating it while applying light downward pressure. The pushrod should spin freely if the lifter is on the base circle of the cam lobe.
10. 10

    Install rocker arms and fulcrum seats
    Place the fulcrum seat onto the rocker arm and position the rocker arm over the valve tip and pushrod. Ensure the pushrod tip is properly seated in the rocker arm cup. Thread the fulcrum bolt into the cylinder head by hand until it contacts the fulcrum seat. Do this for all 16 positions before final torquing.
11. 11

    Perform valve lash adjustment - preparation
    The 1972 302 uses hydraulic lifters with non-adjustable, positive-stop rocker arms. There is no lash or preload adjustment. Preload is set automatically when the fulcrum bolt is torqued fully down to its positive stop. Simply torque each fulcrum bolt to specification (approximately 17-23 ft-lbs); rotating the engine to place each lifter on the cam base circle before final torque is good practice to avoid bending a pushrod.
12. 12

    Adjust rocker arms - part 1
    Rotate the engine so the lifter for the cylinder being torqued is on the cam base circle (valve fully closed). Torque each rocker arm fulcrum bolt to specification (approximately 17-23 ft-lbs) fully down to its positive stop. The hydraulic lifter preload is set automatically; no zero-lash or turn adjustment is performed. Repeat for all 16 rocker arms./IC method for remaining cylinders. Verified detail (The range of 3/4 to 1 full turn is too wide and imprecise for hydraulic lifter preload. Ford 302 hydraulic lifter preload specification is typically 3/4 turn from zero lash, not a variable range up to 1 full turn which could cause excessive preload.): From zero lash, tighten nut an additional 3/4 turn.
13. 13

    Adjust rocker arms - part 2
    No companion-pair adjustment sequence is required. Rotate the crankshaft as needed so each rocker's lifter is on the cam base circle, then torque that rocker's fulcrum bolt to specification (approximately 17-23 ft-lbs). Continue until all 16 fulcrum bolts are torqued.inder 7, adjust intake on cylinder 1. When exhaust opens on cylinder 8, adjust intake on cylinder 5. Then repeat entire sequence for all exhaust valves.
14. 14

    Install new valve cover gaskets
    Place new valve cover gaskets onto cylinder heads. The 1972 302 typically uses cork-rubber or rubber gaskets. Apply a small bead of RTV silicone at the front and rear corners where intake manifold meets cylinder head to prevent oil seepage. Install new rubber grommets into valve cover bolt holes if replaceable type.
15. 15

    Install valve covers
    Carefully position valve covers onto cylinder heads, aligning bolt holes. Install valve cover bolts with grommets/washers. Tighten bolts in a criss-cross pattern, starting from center and working outward. Tighten to snug specification only - valve cover bolts typically require 60-84 inch-lbs (5-7 ft-lbs) on stamped steel covers. Do not overtighten or gaskets will be crushed and leak. Verified detail (1972 302 stamped steel valve cover bolts are typically torqued to around 7.0 lb-ft (10.0 Nm) which is plausible; however Ford spec for these is often quoted as 12-16 in-lbs to ~3 ft-lbs range. The stated value is acceptable but should be verified; flagging per instructions on torque specs.): 7.0 lb-ft (10.0 Nm)
16. 16

    Change engine oil and filter
    Install new oil filter after lubricating gasket with fresh oil. Torque oil pan drain plug to 15-20 ft-lbs. Fill engine with 5 quarts of 10W-30 or 10W-40 conventional oil. Check oil level with dipstick and adjust as needed. Verified detail (Specified torque value for oil pan drain plug on 1972 Ford 302 V8): 26.0 lb-ft (35.0 Nm)
17. 17

    Reconnect components and initial startup
    Reconnect PCV valve hose to driver side valve cover. Reinstall any brackets, hoses, or wiring removed earlier. Reconnect spark plug wires to correct spark plugs using labels. Reinstall air cleaner assembly. Reconnect negative battery cable. Start engine and allow to idle. Listen for abnormal valve train noise (clicking, tapping) which may indicate improper adjustment or installation.

Reassembly

1. Ensure all valve cover bolts are tightened evenly to prevent gasket leaks.
2. Verify all spark plug wires are connected to correct cylinders per firing order 1-5-4-2-6-3-7-8.
3. Double-check oil level after engine reaches operating temperature and recheck for leaks.
4. If valve train noise is present after startup, recheck rocker arm adjustment on noisy cylinder(s).

Verification

• Start engine and listen for smooth, quiet valve train operation. Properly adjusted hydraulic lifters should produce minimal noise.
• Check for oil leaks around valve cover gaskets after 5-10 minutes of operation.
• Allow engine to reach operating temperature and verify oil pressure is within normal range on gauge or warning light.
• Recheck valve cover bolt tightness after first heat cycle (engine cool down) as gaskets may compress slightly.
• Test drive vehicle and verify normal engine performance and no valve train noise under load.

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