FRANKENSTEIN ENGINE DYNAMICS 113004 M311 LS3 Cylinder Head Rect-Port Assembled. This product data sheet is originally written in English. Part Number: 113004 Key Features: Cylinder Head – M311 – Assembled – 2.165 / 1.600 in Valve – 273 cc Intake – 71 cc Chamber – Aluminum – LS3 – GM LS-Series – Each NOTE: IMAGE SHOWN MAY NOT BE ACTUAL PRODUCT PLEASE CALL FOR DETAILS. THIS PRODUCT FITS THE FOLLOWING. ABOUT AMCO AUTO PARTS, LLC. Since 2002 AMCO Auto Parts, LLC has been striving to supply and support car enthusiasts around the world with the products and service they deserve. With the economy the way it is we understand how important pricing is. Here at AMCO Auto Parts, LLC our car parts are some of the lowest prices around. With that in mind you will not lose quality. We offer auto car and truck parts from nearly 150 manufacturers. These companies are some of the most highly regarded in the automotive industry today. Our highly skilled staff is ready to answer any of your questions. Should you have any question, please message us! We would like to thank our new and existing customers for their trust and support in our company. AMCO Auto Parts, LLC will continue to provide top notch customer service along with quality car parts and low pricing. AMCO Auto Parts is not held liable for product fitments. Thank you for your understanding and cooperation! 1986 – California Proposition 65 – Warning. WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. If you feel I do not deserve that then please contact me as I try to make sure every customer is 100% satisfied. AMCO AUTO PARTS, LLC. We would like to thank our new and existing customers for their trust and support in our.