C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Pulling 94 LT1 Engine

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Old Feb 15, 2021 | 02:03 PM
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Default Pulling 94 LT1 Engine

I am pulling the engine on my just acquired 94. I have another engine to install while I rebuild the bottom end (spun rod bearing) of the existing engine. I have the 94 FSM, but can't find the directions for pulling the engine. I will have the Car on a 2 post lift and have an engine hoist. The intake was removed by the previous owner so I will have to bolt some chains to the heads to secure the engine to the hoist. If possible, I would like to leave the auto trans and torque converter in the car. other than the exhaust, motor mounts, starter bellhousing bolts, hoses, wiring etc. What else is involved? I assume that I'll be pulling it from the side with the hood still on the car. I will be swapping the accessories over to the replacement engine, which is from a 94 Camaro.

It's a convertible, do I have to pull the cross brace?

I found this in another post.
, but it references the Hanes Manual. Any suggestions to make it easier will be greatly appreciated,

1 Disconnect tile battery cables from the battery, then refer to Chapter 4 and detach the throttle and cruise control cables from the engine (see illustration).
2 Refer to Chapter 5 and remove the distributor.
3 Refer to Chapter 12 and remove the wiper motor.
4 Remove the air intake duct and MAF sensor (if equipped).
5 Disconnect the brake booster vacuum hose and the PCV line-to-canister hose.
6 label and disconnect the vacuum hoses and wires attached to the engine.
7 Disconnect the fuel injector wires and detach the harness from the engine.
8 Refer to Chapter 1 and drain the cooling system, then detach the radiator hoses and heater hoses from the engine fittings. Also, remove the drivebelt from the pulleys.
9 Refer to Chapter 4 and relieve the fuel pressure, then detach the fuel lines at the fuel rail fittings.
10 Disconnect the AIR switching valve at the air conditioning compressor.
11 Remove the catalytic converter AIR pipe.
12 Refer to Chapter 3 and remove the air conditioning compressor. Detach the accumulator at the fan shroud and brace.
13 Disconnect the fuel lines at the engine block fittings.
14 Refer to Chapter 5 and remove the a1temator.
15 Refer to Chapter 10 and remove the power steering pump. Detach the power steering reservoir at the fan shroud and brace.
16 Remove the water pump pulley (If equipped), then refer to Chapter 2A and remove the vibration damper from the end of the crankshaft.
17 Raise the vehicle and support it securely on jackstands, then disconnect the wires from the oxygen sensor, the ESC sensor and the coolant temperature sensor (See illustration).
18 Detach the temperature sensor and ground wires from the engine block.
19 Detach the catalytic converter AIR pipe from the right-hand exhaust manifold (if equipped)
20 Detach the transmission oil cooler lines from the flywheel cover bracket.
21 Refer to Chapter 5 and remove the starter motor.
22 Refer to Chapter 1, drain the engine oil and remove the 0il filter.
23 Detach the exhaust pipes from the exhaust manifolds and the converter hanger (refer to ChaPter 4).
24 Detach the oil cooler adapter from the block and the line from the oil pan.
25 Remove the flywheel/driveplate cover.
26 If your vehicle is equipped with an automatic transmission, remove the torque converter-to-driveplate bolts. The converter will have to be turned to expose the upper bolts.
27 Support the engine with a hoist, then remove the bellhousing bolts.
28 Remove the engine mount through bolts.
29 Remove the engine mount-to-block bolts.
30 Position a jack under the transmission and raise it just enough to support it. A block of wood should be used to prevent the jack head from bearing against the transmission case or oil pan.
31 Move the engine forward to detach it from the transmission, then make one last check to be sure all wires, cables and hoses have been disconnected before carefully lifting it out of the engine compartment (see illustration).
32 Installation can be accomplished by reversing the removal procedure.
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Last edited by johntorg; Feb 15, 2021 at 03:45 PM.
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Old Feb 19, 2021 | 08:12 AM
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I found some older threads which appear to be what I needed. Just surprised that the engine removal doesn't seem to be covered in the Factory Manual (unless I just can't find it.
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Old Feb 19, 2021 | 01:29 PM
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The procedure is in the FSM. It's not right up front or at the beginning of a section so you'll have to check the table on contents. The section on removing the engine is just a step by step-you may have to thumb through the FSM to find procedures for specific parts of the engine removal. But it's pretty straightforward as long as you don't leave any electricals connected. The Haynes manual version leaves a lot out-for instance you can just take out the 4 bolts that hold the fuel rail to the manifold and move it out of the way. No need to take off the lines and worry about fuel leaking everywhere.

I would highly suggest bolting the intake back on and getting a Happy Hooker from TPIS. It's $75 but worth every penny. You can yank the engine right out with no balancing problems that can sometimes come from chains bolted to the heads.

Last edited by djpink889; Feb 19, 2021 at 01:32 PM.
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Old Feb 22, 2021 | 02:58 PM
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Removed hood and pulled engine. Used Happy Hooker bolted to top of intake. Disconnect harness, hoses, trans (6 speed). Used hoist to lift out.
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Old Feb 23, 2021 | 09:08 AM
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Thanks, I managed to pull it out from the side without the Happy Hooker. Also left hood on the car. Going to install the replacement engine next week. Probably easier for me since the car is an automatic.
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