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M156 AMG 63 Race Ported Cylinder Heads

MHP Race Ported M156/AMG 63 Cylinder Heads Our heads feature: --Full Hand Race Port --CNC Valve Job with Hand Blend --Back Cut Stock Valves --Trimmed Valve Guides --Decked for Higher Static C/R (11.4:1 static) Customers must reuse their stock cams. Modified OEM valvetrain has been tested to 8000rpm without failure. Gains 25rwhp-30rwhp/20rwtq SAE on 93 octane, more on 100 octane. Even with extremely mild stock cams, by increasing the efficiency of the cylinder head via porting/re-contouring/reshaping it, we effectively maximumize the lift/duration of the OEM components. Throttle response becomes razor sharp and gains are across the board. We also offer other upgrades such as larger custom valves/seats, full dual spring valvetrain with Ti locks/retainers, and more. Please contact us directly for more information. List price of $4995 assumes customer sends in their own core castings for porting, or uses our core exchange program. A core fee of $8500 will be assessed if your core exchange heads (stock heads) are not received by us within 12 days of receipt of our ported heads, and/or if they are damaged upon receipt. A core fee of $2500 will be assessed if the complete valvetrain accompanying the cylinder heads is not received by us within 12 days or receipt of our ported heads, and/or if the components are damaged upon receipt. For an international shipping quote please contact us directly at: sales@modernhorsepower.com
Price: $4495.00
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