The Ram Jet 502 blends the legendary torque and performance of the Big-Block with a modern port fuel injection system and tunnel ram-style high-rise intake manifold. It’s a combination that offers uncompromising performance in a visually stunning presentation.
The unique Ram Jet fuel injection system stands 11 inches tall at its highest point and consists of a two-piece manifold/plenum assembly, eight injectors, a throttle body, and an updated MEFI 4 controller. Setup instructions are included, making it a simple “plug-and-play” installation.
Supporting the unique induction system is a robust bottom end with an all-forged rotating assembly and a smooth hydraulic roller camshaft. The heads are high-flow aluminum oval-port parts from Chevrolet Performance.
You’ll need to check your ride for clearance before closing the hood over the Ram Jet 502. Then again, it looks so impressive, you may just want to cruise around with the hood off!
Chevy Big-Block V-8
Displacement (cu. in.):
Bore x Stroke (in.):
4.470 x 4.000
Block (P/N 19170540):
Cast-iron with four-bolt main caps
Crankshaft (P/N 10183723):
Connecting Rods (P/N 19170198):
Forged steel, shot peened
Pistons (P/N 12533507):
Camshaft Type (P/N 12366543):
Camshaft Lift (in.):
.527 intake / .544 exhaust
Camshaft Duration (@.050 in.):
224° intake / 234° exhaust
Cylinder Heads (P/N 12562920):
Aluminum oval port; 110-cc chambers
Valve Size (in.):
2.250 intake / 1.880 exhaust; stainless steel
Rocker Arms (P/N 12368082):
Rocker Arm Ratio:
Distributor (P/N 1104060):
Throttle Body (P/N 17113524):
Water Pump (P/N 19168602):
Flexplate (P/N 10185034):
Base 8° BTDC, 30° Total
Maximum Recommended rpm:
Already own one, but lost some of the paperwork? We’ve got you covered with downloads and links for some of the more important documents below. You’ll find everything from the vital data about your engine’s capabilities to how to install it into your build, even all of the warranty information should you need to make a claim. And don’t forget, the best way we can make sure to get you the latest information on your specific part is to tell us which one you have by registering your engine. No matter what stage of your build you’re in — from shopping for the right part to that part having turned in a few miles — we have the information you need.
* The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles' destination freight charges. Click here to see the 2015 City Express destination freight charge. Click here to see the 2015 Colorado destination freight charge.
***The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Includes destination freight charge and gas guzzler tax.
Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing or other “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.
To allow you to do an accurate price comparison with prices featured on other Internet sites, GM provides Internet pricing both with and without the Destination Freight Charge (see prices including Destination Freight Charge below). To get full pricing details, go to our Build Your Own section.