Installing an LS1 camshaft looks straightforward.

Lubricate the cam, slide it through the front of the block, install the retainer and move on to the timing set.

There’s just one expensive detail hiding inside the block:

The camshaft has to pass through the cam bearings without gouging them.

The LS engine-building reference specifically warns that a fore-and-aft scratch in a cam bearing can result in reduced oil pressure. It also instructs the builder to keep the camshaft aligned with the cam bores and never force it when resistance is encountered.

That’s especially relevant during an LS1 cam swap because the camshaft is long, heavy and surrounded by lobes that would be perfectly happy to scrape a bearing if you let the rear of the cam drop.

Here’s how the damage happens—and how to avoid it.

Why Are LS1 Cam Bearings Easy to Damage During Cam Installation?

An LS camshaft has to travel through multiple bearing locations before reaching its final position.

As you feed the cam into the block, each journal has to pass through its corresponding bearing while the lobes travel through the cam tunnel.

The problem is leverage.

You’re controlling a relatively long camshaft from the front of the engine. If the unsupported rear portion drops, a cam lobe or journal can contact the edge or surface of a bearing.

The LS reference repeatedly stresses keeping the camshaft straight and aligned with the cam bores during installation.

If resistance suddenly increases, that’s not the engine asking for more force.

It’s telling you to stop.

Can a Scratched LS1 Cam Bearing Cause Low Oil Pressure?

According to the LS engine-building reference, yes.

It specifically states:

“A fore/aft scratch in a cam bearing can result in a reduction of oil pressure.”

That warning matters because cam-bearing damage isn’t necessarily obvious after the camshaft has been installed.

Once the cam is in place, the damaged bearing surface is buried inside the engine.

You may finish assembling the timing set, install the front cover, complete the engine and only later discover that something isn’t right with oil pressure.

That’s an impressive amount of work to perform just to avoid spending another minute carefully guiding the camshaft.

Why Would Cam Bearing Damage Affect Oil Pressure?

The PDF establishes that scratching the cam bearing can reduce oil pressure, but it does not provide a detailed hydraulic analysis of the LS lubrication circuit in the cited installation section.

The important source-supported point for this FAQ is therefore simple:

Damaging the cam-bearing surface during installation can create an oil-pressure problem.

We don’t need to turn this article into a general LS1 lubrication-system guide to make that warning useful.

That’s also important for SEO: this page should remain focused on cam bearing damage caused during camshaft installation, rather than trying to rank for every possible cause of LS1 low oil pressure.

How Should You Prepare an LS1 Camshaft Before Installation?

Cleanliness comes first.

The LS reference recommends thoroughly cleaning the camshaft before installation, including removing packing grease or protective material from the journals and lobes and wiping everything dry with a lint-free rag. Remaining particles or fibers should also be removed.

The cam-bearing tunnel should be clean as well.

The reference specifically recommends cleaning the cam-bearing tunnel again before installing the camshaft.

You don’t want abrasive contamination riding between a freshly lubricated cam journal and bearing surface.

A performance engine has enough opportunities to make metal on its own.

It doesn’t need assistance.

Should You Lubricate an LS1 Camshaft Before Installing It?

Yes.

The LS reference calls for applying lubricant to the camshaft journals and lobes before installation.

It describes a practical method of initially lubricating the rear journals and lobes, beginning insertion, and then continuing to apply lubricant as additional sections of the camshaft approach their bearing locations.

The same reference notes that coating the cam-bearing faces beforehand is useful, but if that hasn’t been done, coating the camshaft journals provides lubrication between the journals and bearings during assembly.

If the camshaft manufacturer supplies or specifies a particular assembly lubricant, follow those instructions.

Why Use an LS Camshaft Installation Handle?

Because controlling the camshaft by its nose alone becomes increasingly difficult as more of its weight enters the engine.

The LS reference strongly recommends installing a temporary camshaft installation handle on the cam nose. The additional leverage helps keep the camshaft straight as it moves through the bearing bores.

That extra control matters most when the rear of the camshaft is unsupported.

Without a handle, small movements at your hand can translate into considerably larger movement at the opposite end of the cam.

The installation tool doesn’t make the camshaft magically align itself.

It simply gives you better leverage to prevent the cam from becoming an extremely expensive pry bar.

Can You Use a Generic Cam Installation Tool on an LS1?

The LS reference warns that commonly available camshaft installation tools may not have the correct adapter for an LS camshaft. It specifically recommends making sure the tool is designed to fit the LS cam nose.

That’s worth checking before the engine is sitting open on the stand.

The source also describes a makeshift handle using three 8 mm × 1.25 bolts installed into the cam nose with a suitable piece of pipe secured over them.

For a professional shop, a proper LS-specific cam installation handle is the cleaner solution.

The important part isn’t how impressive the tool looks.

It’s maintaining control of the camshaft.

What Should You Do If the LS1 Camshaft Stops During Installation?

Stop pushing.

The LS reference is unusually direct on this point:

Do not force the camshaft if resistance is encountered.

Instead, gently alter its alignment and work it forward until the next journal enters the bearing correctly.

Resistance usually means the camshaft isn’t properly aligned with the next bearing opening.

Applying more force can turn an alignment problem into bearing damage.

There’s no torque specification for “shove harder.”

How Do You Keep the Rear of the Camshaft From Dropping?

Use the installation handle as leverage and deliberately support the camshaft’s weight as it progresses through the block.

The LS reference recommends taking advantage of the moments when a camshaft journal is supported by the front cam bearing. At those points, the cam can temporarily rest while you reposition yourself before continuing.

The goal is to prevent the unsupported rear of the camshaft from dropping and allowing the lobes to contact the bearings.

Move slowly.

Support the weight.

Align the next journal.

Then continue.

This is one engine-building procedure where being impatient saves approximately no time whatsoever.

Should an Installed LS1 Camshaft Turn Freely?

The LS reference states that once the camshaft is fully inserted, it should rotate easily with your fingers.

That’s a useful immediate assembly check.

If the camshaft suddenly requires substantial effort to rotate after installation, don’t simply continue assembling the engine and hope the timing chain sorts everything out.

Stop and determine why the cam isn’t moving as expected.

Again, the PDF doesn’t provide a complete diagnostic procedure for every possible source of camshaft resistance, so the important point is not to invent one.

The source-supported checkpoint is:

A properly inserted camshaft should rotate easily by hand.

Can You Damage Cam Bearings While Removing an LS1 Camshaft?

Yes, and the LS reference gives essentially the same warning for removal.

When removing the camshaft, it instructs the builder to use an installation/removal handle, draw the cam out slowly, support its weight and stop if resistance is encountered. Most importantly, it warns against allowing the cam lobes to scrape the bearings.

So the risk exists in both directions:

Camshaft installation → potential bearing damage

Camshaft removal → potential bearing damage

A cam swap isn’t finished safely just because the old cam came out without hitting the floor.

Should You Inspect the Cam Bearings During an LS1 Cam Swap?

If the bearings are visible enough to inspect during the work, obvious damage deserves attention.

But don’t confuse a visual check with a complete dimensional inspection.

The LS PDF’s installation guidance is primarily preventive: clean the components, lubricate the camshaft, keep it aligned, don’t force it and make sure it rotates freely once installed.

If you suspect significant cam-bearing damage or an existing oil-pressure problem, the scope has moved beyond simply sliding another camshaft into the engine.

At that point, proper inspection matters more than getting the new cam installed before dinner.

Is This the Same as Checking LS1 Camshaft End Play?

No.

Cam-bearing damage and camshaft end play are separate topics.

Our existing LS1 Camshaft End Play guide covers the camshaft’s axial movement and the 0.001–0.012-inch end-play specification.

This article answers a different question:

How can an LS1 camshaft damage its bearings during installation, and how do you avoid it?

Keeping those search intents separate prevents this page from competing with the existing end-play FAQ.

A Safe LS1 Cam Installation Is Mostly About Patience

There’s nothing especially complicated about sliding an LS camshaft into the block.

The difficulty comes from doing it without letting a journal or lobe damage the bearings along the way.

The LS engine reference gives us a straightforward procedure:

Clean the camshaft and bearing tunnel.

Lubricate the journals and lobes.

Use an LS-compatible installation handle.

Keep the camshaft aligned.

Support its weight.

Never force it when resistance appears.

And once the camshaft is fully installed, verify that it rotates easily by hand.

The entire procedure takes a few extra minutes.

Replacing a damaged cam bearing takes considerably longer.

Funny how engines keep rewarding patience like that.

LS1 Cam Bearing FAQ

Can scratching an LS1 cam bearing cause low oil pressure?

Yes. The LS engine-building reference specifically warns that a fore/aft scratch in a cam bearing can result in reduced oil pressure.

Should you force an LS1 camshaft if it stops during installation?

No. The reference instructs the builder to stop if resistance is encountered, gently realign the camshaft and continue only when it moves smoothly.

Should LS1 camshaft journals be lubricated before installation?

Yes. The reference calls for lubricating the camshaft journals and lobes before inserting the camshaft.

Do you need an LS-specific camshaft installation tool?

The reference warns that generic cam installation tools may not have the correct nose adapter and recommends using a tool designed to fit an LS camshaft.

Should an LS1 camshaft rotate freely after installation?

The LS engine reference states that once fully inserted, the camshaft should rotate easily with your fingers.

Can LS1 cam bearings be damaged during camshaft removal?

Yes. The same precautions apply during removal: support the camshaft, keep it straight and don’t allow the lobes to scrape the bearings.