Edelbrock part #71413 LS3 Cross-Ram intake manifold is designed for Gen IV engines with LS3, L92 and L76 rectangular port cylinder heads. The Cross-Ram LS3 is ideal for anybody looking to combine great looks and outstanding performance between 1,500 - 7,000 rpm. The unique dual-plenum design features 13" long runners with flanges that will accept two, 90mm GM LS3 throttle bodies. The cross-ram dual-plenum design is ideal for twin turbo applications. When matched with high flowing air filters and inlet tubes, the dual-plenum system gives neck-snapping performance with plenty of options for engine builders and tuners. Dyno testing resulted with gains of 27 horsepower and 28 ft-lbs. of torque over a popular aftermarket manifold.
WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.
Throttle Body Recommendations: 2x GM LS3 90mm; Fuel Rail Recommendations: Use Edelbrock fuel rail kit #3654; Installation Notes: Uses LS3/L76 style individual port o-ring seals GM PN19256623 or Edelbrock #7395.; Plenum gaskets use Edelbrock #7271.; Manifold height: A-9.35", B-8.01", C-17.50", D-2.65" E-0 Deg vertical x 5 Deg inward; Port exit dimensions: 1.19" x 2.48"; Use RTV sealant to properly seal end seals, such as Edelbrock High Temp Silicone sealant #1076, DO NOT USE END SEALS GASKETS.; Hardened washers Must be used with intake bolts to ensure proper torque and prevent galling of the aluminum.