Brute, honest horsepower that will leave others in your rear view mirror. Our Blueprint 355 engines are produced from seasoned 350 blocks bored .040" over.

There's only one way to prove horsepower, and make sure our hand-assembled engines are perfect - run them on a performance dyno. We make sure we hit our target horsepower, verify that we have the proper torque and break the new engine in. You'll get a chart showing these critical specs on each engine we ship. We use a computerised balancer to get our rotating assemblies within 2 grams. That assures silky smooth power over the entire RPM range. That's why our engines sound and run better than those other guys.

• 4 bolt main 1pc rear seal block w/rhs dipstick only
• Square and parallel decked
• Align honed main bearing bore
• Cylinders honed on computer controlled machine to within .0002 straightness and roundness
• Cylinders are sonic tested for thickness
• New premium cast steel crankshaft
• New Hypereutectic pistons
• Hastings Moly rings
• Balanced rotating assembly
• Melling high volume oil pump
• Heavy duty double roller timing set
• Long slot, stamped steel rockers
• New aluminium cylinder heads, 195cc Runner, 2.02" / 1.60" swirl polished intake & exhaust valves
• Hardened retainers and springs
• Hardened push rods
• Brass welch plugs
• Hydraulic Cam: .480" I / .486" E & 229° I / 230° E duration @ .050
• 375hp / 400 ft-lbs torque
• 10.0 to 1 Compression ratio
• 34 degrees at 4000 RPM Ignition Timing
• Dyno tested and shipped with results
• Crate Engine includes  Valve covers, Oil Pan and Timing Cover.
• Harmonic balancer, Flexplate, Intake manifold, Carburettor, Distributor and Ignition leads are not included.

Product Reviews for GM355375400 - ROCKET