M156 RSS

AMG M156 vs M177 vs M178 engine comparison — specs, build costs, and 1,500HP potential. Complete 2026 guide to choosing the right AMG V8 platform for your build.

The Mercedes-AMG M156 6.2-litre naturally aspirated V8 is the engine that defined AMG’s modern era — powering the C63 (W204), E63 (W211/W212), CLK63, SL63, ML63, and the legendary SLS AMG. Unlike AMG’s current twin-turbo engines, the M156 relies entirely on displacement, high-revving capability, and airflow to make power. That makes exhaust modifications — particularly headers — one of the most effective ways to unlock additional performance from this engine. This guide covers the exhaust upgrade path for M156-equipped models, including long-tube headers, downpipes, and how these modifications pair with other performance upgrades. Why Headers Matter More on the M156 On...

Building a forged AMG engine is a significant investment — and one of the best decisions you can make for a high-power build. But what does it actually cost in 2026? This guide breaks down the market ranges for AMG engine builds so you can budget realistically, understand what drives the price, and avoid surprises. Market Price Ranges (2026) Pricing varies by engine code, build level, and specification. These are general market ranges — not specific YPG pricing. Contact us for an exact quote on your build. Build Level Market Range (USD) What's Included Forged short block $8,000 – $18,000...

If you are shopping for an AMG engine build, you have probably seen three terms: short block, long block, and crate engine. They describe different levels of engine assembly — and choosing the right one depends on the condition of your current engine, your budget, and your power goals. This guide breaks down exactly what each one includes, when to choose it, and how they compare. Quick Comparison Build Level What's Included You Supply Best For Short Block Block, crankshaft, connecting rods, pistons, bearings, internal seals Cylinder heads, intake, exhaust, turbos, accessories, wiring Healthy heads, bottom end needs rebuild Long...

The factory M156 cylinder heads flow well from the factory — but "well" is not "race-ready." Our M156 CNC-ported heads are flow-bench developed, precision-machined, and assembled with upgraded valvetrain to unlock the airflow your forged bottom end needs. Built in-house at YPG Motorsport in Kuwait, sold as a pair, and shipped worldwide. What Are CNC-Ported Heads? CNC porting uses computer-controlled machining to reshape the intake and exhaust ports inside your cylinder heads. Every port is cut to our proven flow-bench program — identical runner volumes, matched flow rates across all eight cylinders. The result is more air in, more exhaust...