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1967 Chevelle Upgrade Part III

1967 Chevelle Upgrade Part III


We are at the point in the Chevelle's build where we are prepping our brand new GM Performance LS3 for installation...but before we do, there are a number of things we need to do to the of which is swapping out the factory oil pan for an aftermarket piece for clearance reasons. We chose to use a Holley pan as it allows clearance for the Chevelle's cross member. Let's get started.

Here we are looking at the stock oil pan, and it's full of oil, so the first thing we did was drain it out. Note the shape of the factory pan.

CAUTION!!!! LS machined blocks have tons of crazy sharp corners…be very careful!!!

Here is our new Holley oil pan…note how much shorter the deep portion of the sump is allowing for cross member clearance.

Now it was time to drop the oil pan, so we removed all the bolts…you may have gently use a screw driver to assist the seal when dropping the pan down.

Here we can see the exposed “pick up” tube.  It’s a good idea to clean up any residual oil.

Next we removed the factory “pick up” tube, and installed then new tube that came with the Holley oil pan…be sure the new tube “seats” properly.  Sometimes you will have to modify the windage tray to provide clearnace for the pick up tube mount bracket…in this case we did not.

Be sure to torque all your mounting hardware to the factory GM specs.

You will need to drill out the factory rivets when removing the gasket off the original oil pan “IF” you opt to re-use the factory gasket.

Clean up the oil pan gasket, as well as all the contacting surfaces.

You will need to assemble the oil pan per Holley’s instructions…securing the windage tray, etc. (be sure to read all instructions privided by Holley)

You will want to apply a dab of gasket sealer where the parting line is at the timing cover to the bottom of the engine block, and at the rear main seal plate and the block. You can see in the photo below that we are simply replacing these areas of sealer from when we removed the gasket.

Then you are ready to install the new pan.

Once again torque all bolts to their proper factory specs, and you are all set!!!