1981 GMC Engines & Components

COMP Cams Xtreme Energy Pro-Plasma Nitrided Camshafts 12-250-20

COMP Cams Xtreme Energy Pro-Plasma Nitrided Camshafts 12-250-20

Camshaft, Hydraulic Flat Tappet, Advertised Duration 284/296, Lift .507/.510, Chevy, Small Block, Each

Part Number: CCA-12-250-20

Not Yet Reviewed

Estimated Ship Date: Dec 28, 2026 if ordered today

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Estimated Ship Date: Dec 28, 2026 if ordered today

Manley Camshaft Thrust Buttons 42113

Camshaft Thrust Button, Roller Style, Steel, 0.690 in. Length, Buick, Chevy, Pontiac, Small Block Chevy, Each

Part Number: MAN-42113

5.0 out of 5 stars ( 1 )

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PRW Fabricated Valve Covers 4035000

Valve Covers, Tall, Perimeter Bolt Mounting, Fabricated Aluminum, Silver Anodized, Vent Holes, Chevy, Small Block, Pair

Part Number: PQX-4035000

4.5 out of 5 stars ( 2 )

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PRW Pro Series Shaft-Mount Rocker Arms 3535031

Rocker Arms, Pedestal-Shaft Style, Full Roller, Aluminum, 1.50 Ratio, AFR Heads, Kit

Part Number: PQX-3535031

5.0 out of 5 stars ( 1 )

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Melling Select Billet Aluminum Oil Pumps 10077-800SS

Oil Pump, Wet Sump Style, Standard-Volume, Standard-Pressure, Billet Aluminum, 8 in. Pan Depth, Chevrolet, Big Block, Each

Part Number: MEL-10077800SS

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COMP Cams Magnum Retrofit Camshafts 11-470-8

Camshaft, Hydraulic Roller Tappet, Advertised Duration 314/314, Lift .612/.612, Chevy, Big Block, Each

Part Number: CCA-11-470-8

5.0 out of 5 stars ( 3 )

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Dayco High Performance V-Belts 15500

Belt, High Performance V-Belt, 50.00 in. Length, .440 in. Width, Each

Part Number: DAC-15500

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Dayco High Performance V-Belts 15350

Accessory Drive Belt, High Performance, 0.440 in. Width, 35 in. Length, Each

Part Number: DAC-15350

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COMP Cams Xtreme Marine Cam and Lifter Kits K12-236-3

Cam/Lifter, Valvetrain, Hydraulic Flat Tappet, Advertised Duration 262/268, Lift .462/.477, Chevy, Small Block

Part Number: CCA-K12-236-3

1.0 out of 5 stars ( 1 )

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COMP Cams Magnum Retrofit Cam and Lifter Kits CL11-430-8

Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 280/280, Lift .566/.566, Chevy, Big Block, Kit

Part Number: CCA-CL11-430-8

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Melling M-Select Class 1 Camshafts 22135

Camshaft, Hydraulic Roller Tappet, 265/274 Advertised Duration, .470/.490 in. Lift, Chevy, Small Block, Each

Part Number: MEL-22135

5.0 out of 5 stars ( 2 )

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COMP Cams Pro Magnum Hydraulic Lifters 858-1

Lifter, Hydraulic Flat Tappet, Chevy, Each

Part Number: CCA-858-1

2.6 out of 5 stars ( 5 )

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Pioneer Balancers DA-3502

Harmonic Balancer, Internal Balance, 7.990 in. Diameter, Nodular Iron, Black, Chevy/GMC, Small Block, Each

Part Number: PIO-DA-3502

5.0 out of 5 stars ( 2 )

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King SI-Series Main Bearings MB 556SI 030

Main Bearings, 1/2 Groove, .030 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chevy, Big Block, Set of 5

Part Number: KGB-MB556SI030

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PRW Elite Series Stainless Steel Full Roller Rocker Arms 62350715

Rocker Arms, Elite Series, Stud Mount, Full Roller, Stainless Steel, 1.5 Ratio, Fits 7/16 in. Stud, Chevy, Small Block, Set of 16

Part Number: PQX-62350715

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King HP-Series Main Bearings MB 557HP 030

Main Bearings, HP-Series, Silicon Aluminum, 0.030 in. Crankshaft Undersize, Chevy, Small Block, Set of 5

Part Number: KGB-MB557HP030

Not Yet Reviewed

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COMP Cams Xtreme Energy Camshafts 12-249-4

Camshaft, Hydraulic Flat Tappet, Advertised Duration 249/260, Lift .434/.444, Chevy, Small Block, Each

Part Number: CCA-12-249-4

Not Yet Reviewed

Estimated Ship Date: Dec 28, 2026 if ordered today

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Need It Sooner? We recommend these similar substitute parts:

COMP Cams Xtreme Energy Cam and Lifter Kits CL12-249-4

4 out of 5 stars ( 1 )

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Clevite Camshaft Bearings SH-2144S

Cam Bearings, Direct replacement, B-1, Chevy, Big Block, Set of 5

Part Number: CLE-SH2144S

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COMP Cams Magnum Solid Cam and Lifter Kits CL12-223-4

Cam and Lifters, Mechanical Flat Tappet, Advertised Duration 282/282, Lift .495/.495, Chevy, Small Block, Kit

Part Number: CCA-CL12-223-4

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King XP-Series Main Bearings MB 556XPN 010

Main Bearings, XP-Series, Narrowed, Tri-metal, 1/2 Groove Style, 0.010 in. Crankshaft Undersize, Chevrolet, Big Block, Set of 5

Part Number: KGB-MB556XPN010

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COMP Cams Xtreme Energy Cam and Lifter Kits K12-230-2

Cam/Lifter, Valvetrain, Hydraulic Flat Tappet, Advertised Duration 250/260, Lift .432/.444, Chevy, Small Block

Part Number: CCA-K12-230-2

Not Yet Reviewed

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King HP-Series Rod Bearings CR 808HPN010X

Rod Bearings, .010 in. Crankshaft Undersize, .001 in. Extra Clearance, Bi-metal, Silicon Aluminum, Chevy, Big Block

Part Number: KGB-CR808HPN010X

Not Yet Reviewed

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Melling Valves V1294

Valve, Exhaust, Steel, 1.500 in. Diameter, 0.372 in. Stem, 4.923 in. Overall Length, Chevrolet, GMC, Each

Part Number: MEL-V1294

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Proform Timing Tabs 66109

Timing Pointer, Steel, Chrome, 8 in. Balancer, Chevy, Big Block, Each

Part Number: PRO-66109

4.0 out of 5 stars ( 7 )

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Melling Rocker Arm Studs MRDS-2920

Rocker Arm Stud, Alloy Steel, 7/16-14 in. Base, 3/8-24 in. Arm Nut Thread, 0.600 in. Base Thread Length, 0.875 in. Nut Thread Length, Chevy, GMC, Each

Part Number: MEL-MRDS-2920

5.0 out of 5 stars ( 4 )

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