This bold new 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 - 6,800 rpm. The manifold is designed to fit under the hood of C6 LS3 Corvettes. This dual-plenum design features 12-3/4" long runners with flanges that will accept two, 90mm GM LS3 throttle bodies. The unique 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 12 horsepower and 25 ft-lbs. of torque over a popular plastic aftermarket manifold.
This manifold is available with a black/grey or red/grey powder coated finish with machined highlights for great looks in the engine compartment.
All items will be shipped via Standard Ground Service unless otherwise requested. Many carriers require a physical street address; they will not deliver to a P.O. Box. All freight charges are the customer’s responsibility. Please note that all freight charges quoted are for Standard Ground Service on the price list. We will be happy to quote you charges for other shipping methods. All Items shipped on Friday Next Day Air will be delivered on the following Monday. If you would like Saturday delivery for items shipped on Friday only, please contact us for shipping arrangements. If an item is custom order or on back order, it will ship with the selected shipping service as soon as it is ready. To check if an item is in stock and ready to ship, please call our parts department.
Customers may return new, unused items within 90 days of delivery for a full refund to the original payment method. West Coast Corvette is not responsible for return shipping costs unless it was our error. Please refer to the tables below for return restrictions.
Full refund to original payment method
After 90 Days
10% Restocking fee and store credit
Oversize fees are noted on the product listing. Including but not limited to, wheels, spoilers, splitters, side skirts, any items with initial oversize shipping fees
10% Restocking fee
MGP Calipers, Lloyd mats, Racemesh grills, Speed Lingerie, American Car Craft, Oracle Lighting
Not eligible for return
Used parts, clearance items and parts that have been installed.