588 BBC 12 Degree 184x Profiler Headed - $22,500

Apr 2nd 2026

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$22,500

Listing Number: 184779595

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SEVERN, MD, United States

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Butternut72Nova (Private Seller)

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Item description

Fresh off Dyno please see below specs on the engine. No tire kickers please this is a fresh 588 that made 1216 HP on Q16 fuel. If interested call me at 410-399-8579 no other forms of communication will be responded to.

• Engine Type: 588 Cubic Inch Big Block Chevy (Merlin 9.8 Deck)

• Compression Ratio: 13.8:1

• Builder: Jim Bowen Racing Engines (Balanced 3-27-26)

Bottom End (Short Block)

• Block: Merlin 9.8 Deck, World Block with Cast Caps and ARP Bolts

• Crankshaft: Ohio Crank

• Rods: Oliver I-Beam Rods (6.380" length)

• Pistons: Wiseco K493B125

• Rings: Total Seal / J-Rings (Gap: .025 Top / .026 2nd)

• Bearings: * Main: MS-829H STD (Clearance: .025)

• Rod: TRW CB 743P-1 (Clearance: .003)

• Oil System: Moroso Aluminum Oil Pump (22163) with 8-Quart Pan

Valvetrain & Cylinder Heads

• Heads: Pro-Filer 184X CNC

• Intake: Pro-Filer Cast 4500 Intake Manifold

• Camshaft: Comp Cam (Custom Grind R115)

• Duration @ .050: 283 Intake / 306 Exhaust

• Lobe Lift: .485 Intake / .290 Exhaust

• Lifters: Isky EZ-Roll Lifters

• Rocker Arms: T&D Machine (1.85 Ratio)

• Valves: Titanium Intake (2.500") and Exhaust (2.000") with 55^{\circ} seats

• Springs: PAC Triple Springs (Installed height 2.160", 300 lbs seat pressure, 825 lbs @ .850 lift)

• Pushrods: 7/16 Tapered (Lengths: (8) 10.800, (4) 10.250, (4) 10.450)

• Gaskets: SCE Copper Head Gaskets (.049), 1306-3 Intake Gaskets

Balancing Data (Bobweight Card)

• Rod Rotating: 561g

• Rod Reciprocating: 240g

• Piston & Pin: 643g

• Rings/Locks/Bearings/Oil: 135g total

• Total Bobweight: 2140g

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Condition:

Used

Seller Information

Private Seller

Butternut72Nova

SEVERN, MD 21144, United States

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April 2026

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