Engines & Engine Parts

Pro LS 4340 Forged Steel Crank, 3.622 Stroke, 24X Reluctor, Lightened Rod Journals and Gun-drilled Mains, Std. 6-bolt Flange, Internal balanced, LS1

Part Number: SUM-180LS362224X

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Piston Rings, Gas Nitrided Steel Top, Martensitic Ductile Napier Second, Std. Tension Oil, File Fit for 4.030 in. Bore, 1.2mm, 1.2mm, 3.0mm, Set

Part Number: SUM-136SN9045035

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Rocker Arms, Super-Street, Stud Mount, Full Roller, Aluminum, Narrow Body, 1.5 Ratio, Fits 3/8 in. Stud, Chevy, Small Block, Set of 16

Part Number: PRO-66907

4.36 out of 5 stars ( 36 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Rocker Arms, Roller Bearing Trunnion, L92/LS9/LS3, Assembled, Heavy Duty Cast Steel, 1.7 Ratio, Rectangle Port, Chevy, Set of 16

Part Number: SUM-141554

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Stage 3 Pro LS Cam 232/242 113+3, .600/.600 Lift, 3-bolt, Excellent Power and Torque, 5.3, 5.7, 6.0, 6.2, 7.0, LS1 LS2 LS6 LS3 LS7 LQ4 LQ9 LS9, Each

Part Number: SUM-8708R1

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Crate Engine, Pro Series 530 HP EFI Base Dressed Long Block, Assembled, Internal Balance, Aluminum Cylinder Heads, Chevrolet, 6.2L LS, Each

Part Number: MLL-PSLS37650CTF

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Cylinder Head Studs, ARP2000, 12-Point Nuts, Fastener Lube, Chevy, LS, 2004 and Later, Kit

Part Number: ARP-234-4345

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Rocker Arm; Ultra Pro Magnum; Rocker Arm; Stud 7/16 in. Ratio 1.7 in.; Chevy Big Block 396-454 cid; 16 pc.

Part Number: CCA-1620-16

4.95 out of 5 stars ( 38 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Rocker Arms, Fits 7/16 in. Stud, Full Roller, Steel, 1.70 Ratio, Chevy, Big Block, Set of 16

Part Number: CCA-1820-16

4.27 out of 5 stars ( 11 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Engine 376 c.i. GM LS Style Proseries Iron Block, GM Intake,

Part Number: MLL-S0010

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Cylinder Head Studs, Hex Head, Chevy, Small Block, Kit

Part Number: ARP-134-4001

5.0 out of 5 stars ( 48 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Pro SBC Stage 4 Hyd. Roller Cam, 224/232 Dur. 112 LSA + 2 Adv, .550/.540 1.5 Ratio, .587/.576 1.6 Ratio, 2000-6500 RPM Range, 87-02 Gen 1 Roller Block

Part Number: SUM-8803

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Crate Engine, Dressed, Long Block, 454 Stroker, 563 HP, 545 TQ, New Block, Aluminum Heads, 4-Bolt Mains, Chevrolet, Small Block, Each

Part Number: MLL-PS4541CTC1

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Stage 3 Pro LS Truck Swap Cam, 222/232 112+5, .550/.550 Lift, 3-bolt, 4.8, 5.3, 5.7, 6.0, 6.2L LS1 LS2 LS6 LS3 LS7 LS9 LSA LQ4 LQ9 LH6 LM7, Each

Part Number: SUM-8713R1

4.92 out of 5 stars ( 13 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Cylinder Head Stud, Chromoly, Pro Series, 12-Point Nuts, Chevy, 6.6L/400, Diesel, LB-7, LLY, Kit

Part Number: ARP-230-4201

4.93 out of 5 stars ( 15 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Pro LS 2618 Forged Piston, 4.000 bore, 1.326 C.H., 2cc Flat, Std. Stroke, .945 pin Press or Float, NA/Boost/Nitrous, Cathedral/Rect. 6.0L LQ4 LQ9,

Part Number: SUM-3269454000-2

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Stage 2 Pro LS Cam. 226/238 113+3, .600/.600 Lift, 3-bolt, 4.8, 5.3, 5.7, 6.0, 6.2, 7.0, Vortec Truck LS1 LS2 LS6 LS3 LS7 LSA LQ4 LQ9 LS9 LS4 LY6

Part Number: SUM-8707R1

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Rocker Arms, 1.7 Ratio, 7/16 in. Stud, Full Roller, Stainless Steel, Polished, Big Block Chevy, BBC, Set of 16

Part Number: SUM-G6995

4.88 out of 5 stars ( 8 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Crate Engine, Dressed Long Block, Pro Series Chevy 632 C.I.D. 815 HP, Carbureted, Internal Balance, Aluminum Cylinder Heads, Chevy, Tall Deck, Each

Part Number: MLL-PS6320CTC

4.5 out of 5 stars ( 10 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Cam and Lifter kit, Stage 1 Pro LS Drop-in Truck Swap Cam, Maximum Torque for Towing, 205/217 112+2, .500 /.500 Lift, 3-bolt, 4.8, 5.3, 6.0, 6.2

Part Number: SUM-K8718R1

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Cylinder Head Studs, 12-Point Head, Chevy, Small Block, Kit

Part Number: ARP-234-4301

4.95 out of 5 stars ( 21 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Pistons, Pro LS 2618 Forged, 4.030 bore, 8cc dish, 4.000 in. Stroke, 6.125 Rod, NA/Boost/Nitrous, Cathedral/Rect., 6.0 LY6 LQ4 LQ9, Set of 8

Part Number: SUM-1109274030-8

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Cylinder Head Studs, Pro Series, 12-Point Heads, Chrysler, Dodge, 5.7, 6.1, 6.2, 6.4L, Kit

Part Number: ARP-244-4300

4.75 out of 5 stars ( 8 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Crate Engine, Pro Series, Long Block, 4.466 in. Bore, 4.000 in. Stroke, Internal Balance, Hydraulic Roller, 1-Piece Rear Main Seal, Chevy, 8.2L, Each

Part Number: MLL-PS502CT

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Pro LS 2618 Forged Piston, 4.030 bore, 1.299 C.H., 2cc Flat, Std. Stroke, 6.125 .927 Rod, NA/Boost/Nitrous, Cathedral/Rect. 6.0L LY6 LQ4 LQ9, Set of 8

Part Number: SUM-2999274030-2

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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