Big Block 427 Anniversary
What’s HOT


GM Big Block Ram Jet 502 Engines


Engine Size







GM Big Block Ram Jet 502 Engines

502 cu in







What’s Hot - A GM Big Block Ram Jet 502 Engine

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_Big_Block_Ram_Jet 502_Engines


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*Applications have not been validated. They are merely suggestions of how you might enjoy your GM Performance Parts crate engine. Some applications may affect engine warranty. See page 384 for specific warranty information. Some applications may not be emission legal; check state and local ordinances.



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