With an 11" fuel-injected intake manifold flexing out of the top of a 502" big-inch Rat, the GM Performance Parts Ram Jet 502 is just plain cool. Not only attractive, the Ram Jet intake adds a significant amount of function to the big-block with amazing throttle response that you just have to experience to believe. Combining our aluminum-headed 502 with a modern fuel-injected intake results in 502 horsepower and 565 lb.-ft. of face-slapping torque. With the Ram Jet intake, you also have over 500 lb.-ft. of torque available from 2200 rpm on up.

Without question, that big fuel injection intake stands out the most on the Ram Jet 502. Functional as it is attractive, the Ram Jet intake system enhances the already impressive torque band of the 502. The intake gobbles up air and stuffs it into the awaiting cylinders with incredible efficiency. The impressive intake only sits a half-inch taller than a comparable carbureted system with a high-rise intake manifold, Holley four-barrel carb and air cleaner.

The Ram Jet 502 features a 4.00" stroke forged crankshaft, 4.47" forged aluminum pistons, forged rods, and a hydraulic roller camshaft. The aluminum heads are our highly efficient oval-port intake design, and they utilize 2.25" intake and 1.88" exhaust valves. Underhood clearance at the throttle body should be checked for interference.

GM Performance Parts Ram Jet 502 C.I.D. 502 HP Engine Assemblies

• Displacement- 502
• Bore x stroke- 4.47 x 4.00
• Block- cast iron 4-bolt main caps
• Pistons- forged aluminum
• Camshaft Type- hydraulic roller
• Camshaft Lift- .527 intake/.544 exhaust
• Camshaft Duration(@.050in)- 224 intake/ 234 exhaust
• Cylinder Heads- aluminum oval port, 110cc chambers
• Valve Size -2.25 intake/1.88exhaust
• Compression- 9.6:1
• Rocker Arms- stamped steel
• Rocker Arm Ratio- 1.7:1
• Ignition Timing- base 8 degrees btdc, 30 degrees total
• Recommended Fuel -92 octane
• Maximum RPM- 5800
• Balanced- external
• Horsepower- 502@5100
• Torque-565@3200    

Notes: This engine is not designed, nor intended to be used in any marine applications. Engines installed in vehicles registered and normally operated outside of the United States carry no warranty.            **This part is shipped via truck freight, additional shipping charges will apply. Multiple truck freight parts on an order may increase the shipping amount.   Note: Crate engine shipping charges have two components; Commercial Delivery (Free) & Residential Charge. The commercial shipping delivery to a freight terminal or commercial address ((provided the commercial address has a forklift to unload the product). If the product is shipped to a residential address there is an additional cost of $300 for the use of a lift-gate vehicle. Please call USM (888-876-7223) for any questions.   Truck Freight:    Most Truck Freight items have two standardized shipping rates, one rate to the terminal, another to your door. Additional fees apply for lift gate service; to avoid this you can choose terminal pickup.