How should you examine and maintain camshaft bearing and Camshaft in V8 engine on Chevrolet El Camino?

Examine the bearing surfaces and the cam lobes; shallow surface scratches can be removed with fine emery cloth or an oil stone, while deep scoring requires a new camshaft. Mount the camshaft on V-blocks and use a dial gauge to measure lobe lift and run-out, rejecting any camshaft that does not meet specified limits. Measure the journal diameters with a micrometer and reject any camshaft that does not meet the specified limits. Worn bearings can be extracted using a suitable tool, such as GM tool set No. J-6098, and it is necessary to drive out the camshaft rear plug from the block. New bearings are installed with the same tool set, ensuring the cam bearing oil holes are aligned: for Small V8, the No.1 bearing hole should have oil holes equidistant from the 6 o'clock position, with No. 2 through No. 4 positioned at 5 o'clock, and the No. 5 bearing oil hole at 12 o'clock; for Mark IV VB, the No.1 through No. 4 oil holes must align with the cam bearing bore oil holes, while the No. 5 bearing bore should be at or near the 6 o'clock position. After installing new bearings, a new camshaft rear plug should be installed flush 1/32 inch below and parallel to the rear surface of the block.

Genuine Chevrolet El Camino Camshaft Bearing

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Chevrolet El Camino Camshaft Bearing
Part Number: 390300
$22.89 MSRP: $36.02
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Product Specifications
- Other Name: BEARING, Engine Camshaft & Balance Shaft Front; Bearing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1986-1987 Chevrolet El Camino | EL CAMINO, MONTE CARLO
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Chevrolet El Camino Camshaft Bearing
Part Number: 12453170
$5.85 MSRP: $7.28
You Save: $1.43 (20%)
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Product Specifications
- Other Name: BEARING, Engine Camshaft & Balance Shaft Front; Bearing, Camshaft Bearing
- Replaces: 00474005, 474005
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1987 Chevrolet El Camino | CLASSIC 4 DOOR, CLASSIC STATION WAGON, EL CAMINO, MONTE CARLO | 6 Cyl 3.8L, 8 Cyl 4.4L, 8 Cyl 5.0L
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Chevrolet El Camino Bearing, Camshaft Front & Rear
Part Number: 25524301
Product Specifications
- Other Name: BEARING; Bearings
- Position: Front and Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1985 Chevrolet El Camino | CLASSIC 4 DOOR, CLASSIC STATION WAGON, EL CAMINO, MONTE CARLO | 6 Cyl 3.8L
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Chevrolet El Camino Bearing, Camshaft #1(260, 307, 350&403 All)
Part Number: 12339842
Product Specifications
- Other Name: BEARING, Engine Camshaft & Balance Shaft Front
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1983 Chevrolet El Camino | CLASSIC 4 DOOR, CLASSIC STATION WAGON, EL CAMINO, MONTE CARLO | 8 Cyl 5.7L Diesel

Chevrolet El Camino Camshaft Bearing

The Chevrolet El Camino Camshaft Bearing provides support for the camshaft to make it spin smoothly and time the valves accurately. This allows your engine to continue breathing sharp and true. Sitting in precision machined bores of the block, each Camshaft Bearing forms a low friction plain surface that rides on a pressured oil film supplied by the pump. This prevents metal to metal contact and heat build up. Over the years, Chevrolet offered two forms of construction for this part, bi-metal and tri-metal. The bi-metal Camshaft Bearing has a layer of aluminum alloy bonded, often with an added layer of silicone for hardness and seizure resistance, to a rigid steel backing. The tri-metal Camshaft Bearing has an added copper middle layer with a lead-tin-copper top which provides more fatigue strength and allows for the embedding of dirt that can score the journal. Regardless of style, proper crush and oil-hole alignment keep the Camshaft Bearing locked in position and bathed in lubricant. Proper clearance, typically in the thousandths of an inch, allows an El Camino to rev freely without premature wear and helps every Chevrolet El Camino maintain smooth valve action and long engine life.

Each OEM Chevrolet El Camino Camshaft Bearing we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Chevrolet El Camino Camshaft Bearing Parts Questions & Experts Answers

Camshaft Bearing
390300
Q: How should you examine and maintain camshaft bearing and Camshaft in V8 engine on Chevrolet El Camino?
A:
Examine the bearing surfaces and the cam lobes; shallow surface scratches can be removed with fine emery cloth or an oil stone, while deep scoring requires a new camshaft. Mount the camshaft on V-blocks and use a dial gauge to measure lobe lift and run-out, rejecting any camshaft that does not meet specified limits. Measure the journal diameters with a micrometer and reject any camshaft that does not meet the specified limits. Worn bearings can be extracted using a suitable tool, such as GM tool set No. J-6098, and it is necessary to drive out the camshaft rear plug from the block. New bearings are installed with the same tool set, ensuring the cam bearing oil holes are aligned: for Small V8, the No.1 bearing hole should have oil holes equidistant from the 6 o'clock position, with No. 2 through No. 4 positioned at 5 o'clock, and the No. 5 bearing oil hole at 12 o'clock; for Mark IV VB, the No.1 through No. 4 oil holes must align with the cam bearing bore oil holes, while the No. 5 bearing bore should be at or near the 6 o'clock position. After installing new bearings, a new camshaft rear plug should be installed flush 1/32 inch below and parallel to the rear surface of the block.