GM Performance Parts Ram Jet ZL1 454 Crate Engine
Tilbake     Hovedside

View larger image
Product images may differ from actual product appearance.

The All Aluminum Beast Returns!

The Ram Jet ZL1 is based on the legendary all aluminum ZL1 cylinder block. The ZL1 block, first introduced is 1969, was used in Can Am and found its way into a very limited number of 1969 Corvettes and Camaros. With a few modern updates such as provisions for a roller camshaft and improved main webs, the ZL1 block is still produced from the original tooling used in 1969. Each engine will carry a special three digit serial number machined into its unique cast logo Ram Jet ZL1 valve covers. The ZL1 makes some serious horsepower, with 520 HP on tap thanks to it's 10.2:1 compression ratio and .640''/.598'' lift solid roller cam. The Ram Jet ZL1 uses GMPP's Ram Jet fuel injection originally introduced on the Ram Jet 502. This system offers great throttle response, torque and drivability. A forged crankshaft, rods and pistons fill the aluminum cylinder block. The aluminum cylinder heads have stainless steel valves and race quality springs actuated by roller rocker arms. The Ram Jet ZL1 comes complete with ignition, fuel system, water pump, starter, automatic transmission flexplate, ECM and wiring harness. The Ram Jet is intended for use in 1978 and earlier pre-emission street vehicles and any year off-road vehicles.


  • 510 HP @ 5750 RPM
  • 493 ft/lbs @ 4250 RPM
  • 10.2:1 Compression Ratio
  • 4.250'' Bore; 4.00'' Stroke
  • Mark IV Alumium ZL1
  • 1053 Forged Steel Crankshaft
  • Forged 4340 Steel Connecting Rods
  • Forged Aluminum Pistons with pressed pin
  • Plasma-moly piston rings
  • Mechanical roller cam (.640'' /.598'' Lift, 236/232 duration @ .050'')
  • Aluminum oval port heads with 110cc combustion chambers
  • 2.25'' Int / 1.88'' Exh Stainless steel valves
  • 1.7:1 ratio aluminum roller rockers
  • High performance one-piece pushrods
  • Ram Jet Injection with wiring harness and CPU
  • New design, Teflon coated windage tray
  • GM 8'' counterweighted damper
  • Electronic CPU controlled distributor
  • 10 base ignition timing
  • R43XLS Spark Plugs
  • 92 Octane only



    Ram Jet ZL1 454ci/510 HP

      174.900 + Mva