Oil Pan Removal *
Ref: Chilton's Auto Repair Manual 1964-1971
1964-1968 Chevelle and 1969 With Standard Transmission
1 - Remove engine from car; disconnecting all electrical connections, fuel lines, hoses, exhaust manifolds, etc. and drain all fluids. It is also suggested you mark the distributor location and remove the distributor and radiator to prevent possible damage during removal. It is also advisable to remove the hood for clearance and to prevent damage.
2 - Place engine on engine stand.
3 - On cars with automatic transmission, remove converter housing underpan.
4 - Remove starter then oil pan.
1969 Chevelle with Automatic Transmission, 1970 Chevelle.
It is possible to replace the oil pan without removing the engine but it is often much easier to remove it as shown in step #1 at top of this page.
1 - Disconnect battery ground cable.
2 - Remove radiator upper mounting panel. Place a piece of heavy cardboard between fan and radiator or drain radiator and remove.
3 - Remove starter and disconnect fuel line.
4 - Drain engine oil.
5 - Remove converter housing underpan and splash shield.
6 - Rotate crankshaft until timing mark on harmonic balancer is at its 6:00 o'clock position.
7 - Remove front engine mounts through bolts.
8 - Raise engine approximately three inches, remove engine mounts, and remove oil pan. Be sure to leave the engine weight on the engine hoist.
Oil Pan Removal - V8 Engines
1964-1968 Chevelle
Same procedure as above.
1969-1970 Chevelle, 1970 Monte Carlo
It is possible to replace the oil pan without removing the engine but it is often much easier to remove it as shown in step #1 at top of this page.
1 - Disconnect battery ground cable and distributor cap.
2 - Remove radiator upper mounting panel. Remove fan. Place a piece of heavy cardboard between fan and radiator or drain radiator and remove fan and radiator.
3 - Drain engine oil.
4 - Disconnect exhaust.
5 - Remove converter housing underpan and splash shield.
8 - Disconnect steering idler lever at the frame. Swing linkage down.
9 - Rotate crankshaft until timing mark on balancer is at the 6:00 o'clock position.
10 - Remove starter.
11 - On small V8 remove fuel pump.
12 - Remove front engine mount through bolts.
13 - Raise engine and insert 3-inch blocks under engine mounts.
14 - Remove oil pan.
1969 Chevelle with 396 Engine or Manual Transmission, 1970 Chevelle 396/454
It is possible to replace the oil pan without removing the engine but it is often much easier to remove it as shown in step #1 at top of this page.
1 - Disconnect battery ground cable.
2 - Remove air cleaner, dipstick, distributor cap, radiator shroud and upper mounting panel.
3 - On 396/454 models, place a piece of heavy cardboard between radiator and fan or remove radiator and fan to prevent damage.
4 - Disconnect engine ground straps. Remove fuel pump on small V8 engines.
5 - Disconnect throttle control cable.
6 - Drain oil and remove oil filter.
7 - Remove driveshaft and plug rear of transmission.
8 - Remove starter.
9 - Disconnect transmission linkage at transmission or remove floor-shift lever.
10 - Disconnect speedometer cable and back-up switch connector.
11 - On manual transmission Chevelles, disconnect clutch cordon shaft at frame. On automatic transmission Chevelles, disconnect cooler lines, detent cable, rod or switch wire, and modulator pipe.
12 - Remove crossmember bolts, jack up engine, move crossmember rearward.
13 - Remove crossover or dual exhaust pipes.
14 - Remove flywheel housing cover, transmission, flywheel housing and throw-out bearing on manual transmission Chevelles, front engine mount through bolts.
15 - Raise rear of engine approximately 4-inches. Support engine by hoist.
16 - Raise front of engine approximately 4-inches and insert 2-inch blocks under front engine mounts.
17 - Rotate crankshaft until timing mark on balancer is at the 6:00 o'clock position.
18 - Remove oil pan.
* The Chilton's manual only covers through the 1970 model year. it is "assumed" the 1971 and 1972 model years would require the same procedures.
