Additional Images

GMP-19166393-X - Pace Prepped & Primed BBC ZZ427 505HP Crate Engine

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

Shipping: FREE 48 State Truck Freight Shipping (International shipping will require freight quote)
Pricing: $11,389.88

Customize Your Item

- Additional Shipping Options -
 * required
- Pace Engine Dyno Service -
Free Shipping!


GMP-19166393-X - Pace Prepped & Primed BBC ZZ427 505HP Crate Engine Includes:
• Pace engine prep and oil priming service. Click Here for more information.
• Fully GM assembled long block
• Black Cast Aluminum Valve Covers with 427 Logo
• Oil pump, pick-up and oil pan
• Aluminum Performance Intake
• Black GM Licensed 14” Air Cleaner
• GM Tuned Holley 770CFM, vacuum secondaries, electric choke
• Performance mechanical fuel pump with plumbing to carb
• HEI Distributor, plug wires and spark plugs
• 14” Auto Trans Flexplate
• HD Starter with bolts
• 8” Harmonic Balancer
• Front timing cover
• Cast Aluminum Short Water Pump
• Oil Filter Adapter
• Passenger Side RH Oil Dipstick and Tube
• Includes Oil Filter and Pace Performance recommended break in oil: Shipped in Pan

General Motors limited 2 year / 50,000 mile parts & labor warranty. Click Here to view or download warranty form.

Related Products:
Pace Professional Engine Dyno Break-In & Testing
ZZ427 Engine with TH400 Transmission Combo Package
ZZ427 Engine with 4L80E 4 Speed Transmission Combo Package
ZZ427 Engine with 4L80E 5 Speed Transmission Combo Package
ZZ427 Engine with 4L80E 6 Speed Transmission Combo Package
ZZ427 Engine with T56 6-Speed Transmission Combo Package
ZZ427 Engine with TKO600 5-Speed Transmission Combo Package
CPP ZZ427 480HP Base Engine

There are few engines that conjure up images of greatness like the 427 Chevy big-block. The ZZ427 big-block crate engine brings back all of the good things that you remember about the 427 with a few modern new upgrades. With an updated cast iron block, a 10.1:1 final compression ratio, and an aggressive hydraulic roller camshaft, the ZZ427 offers you outstanding performance while still living on low octane fuel.

The legendary 427" big-block Chevy powered some of the most storied cars in the history of the high performance automobile. This latest version holds true to that tradition, offering you a tough, 4-bolt main cast iron block with an all forged internal rotating assembly. The top half of the engine is the same as the limited edition Anniversary 427 crate engine aluminum oval-port heads that use 2.19" intake and 1.88" exhaust valves work wtih 1.7:1 aluminum roller rockers and a .527" intake/.544" exhaust camshaft. The intake is a matching high-flow aluminum oval-port piece that gets fed the air/fuel mix from a 770-cfm carburetor. An HEI distributor, aluminum water pump, spark plug wires, and a 14" flexplate round out the package. Internally balanced, the ZZ427 will spin to 6000 rpm before it's time for you to shift.

The ZZ427 is an exciting trip back to one of the high points in the history of the Chevrolet big-block. With a conservative rating of 505 horsepower and loads of torque, it's still one of the best crate engines for just about any big-block application.

Power: 505 HP @ 5900 RPM, 514 ft. lbs. of torque @ 4100 RPM
Displacement: 427 CID
Bore x Stroke: 4.250” x 3.750”
Compression Ratio: 10.1:1
Recommended Fuel: 92 Octane
Block: Cast Iron, 1 piece rear seal, 4-bolt main caps
Crankshaft: Forged Steel
Connecting Rods: Forged Steel
Pistons: Forged Aluminum
Camshaft: Steel Hydraulic Roller Tappet
Cam Lift: .527” Intake / .544” exhaust
Cam Duration @ .050”: 224 deg. Intake / 234 deg. Exhaust
Lobe Separation: N/A
Cylinder Heads: Aluminum Oval Port.
Combustion Chamber: 110cc
Valves: 2.190” Intake/ 1.880” Exhaust
Rocker Arms: Aluminum Roller, 1.7:1 Ratio
Balance: Internal
Maximum GM Recommended RPM: 6400
Ignition Timing: Base 10 degrees BTDC, 36 degrees total

Application List


Shipping Information

  • Item Requires Shipping
  • 500.0 lbs.
  • W37.0000” x H36.0000” x L42.0000”
  • Free Shipping!
  • FREE 48 State Truck Freight Shipping (International shipping will require freight quote)

Customer Reviews

Comment Total Reviews (0)

Write the First Review!

You must login to post a review.

  • We don’t just want your business today. We want to EARN your business for LIFE!
  • USA Owned, Operated & Employed
  • Installers & Resellers Click Here to Apply
  • We Specialize In:
    • GM LS Conversions
    • Engine & Trans Combo Kits
    • Unique Ready to Run Engines
  • Have a question?
  • 888-748-4655 Mon-Fri 8AM-6PM EST
  • Click above for 24/7 Live Chat Service.