AMS EVO IX CNC Ported Race head - Modern Automotive Performance

The AMS EVO IX CNC Cylinder Head is the best performing and most researched design on the market. After countless hours of testing we came up with a port design that offers more than just peak flow numbers. Flow bench numbers don't always tell the whole story. We went one step further and correlated flow numbers to actual dyno data. Many vendors claim their head flows 250, 260, or 270 cfm but what does that really mean?

Most vendors claim their peak flow at max lift. Their head may flow 270 CFM at .500 lift but what about flow at lower lifts? The flow at low, mid and high lift has to be balanced a certain way to achieve the most effective power curve. We have developed a CNC program that not only brings consistent performance and quality but also makes the most power of any head that we've ever tested including our old design!

Reference our dyno graph to compare our numbers with the competitor’s cylinder heads.

FLOW NUMBERS

Intake

.050" 61 CFM

.100" 107 CFM

.150" 151 CFM

.200" 189 CFM

.250" 222 CFM

.300" 244 CFM

.350" 258 CFM

.400" 269 CFM

.450" 274 CFM

.500" 277 CFM

Exhaust

.050" 44 CFM

.100" 88 CFM

.150" 134 CFM

.200" 193 CFM

.250" 229 CFM

.300" 245 CFM

.350" 249 CFM

.400" 255 CFM

.450" 261 CFM

.500" 265 CFM

FEATURES

Best performing and most researched design on the market

CNC ported for optimum flow, performance and consistency across the head

+1mm Supertech valves increase flow and performance

High heat tolerant Inconel exhaust valves add durability

Dual springs and titanium retainers for maximum performance up to 10,000 rpm

Suitable for even aggressive high lift camshafts

Precisely hand finished runners, chambers and blending of bowl area

Available on a core exchange or for outright purchase

Professionally assembled by AMS engine technicians

Core heads are stripped, cleaned and assembled with new bronze guides and hardware

SPECIFICATIONS

CNC machine ported with precise hand finishing

Supertech 1mm over Inconel exhaust valves

Supertech 1mm over stainless steel intake valves

Supertech dual springs with titanium retainers

Manganese bronze valve guides

APPLICATIONS

Fits 2006 Mitsubishi Evolution IX models

GOOD CORE REQUIRED FOR PURCHASE. IF YOU DO NOT WISH TO SEND IN A CORE PLEASE SELECT THE DROP DOWN OPTION FOR NO CORE BEING SENT