I just got back from the amazing 2007 SEMA show in Las Vegas. There were tons of great new products and beautiful vehicles on display from more than 2,100 vendors. I'll bring you the best of the show over the next few months and what better way to get things started then with the new 427 crate engine from GM.



To celebrate the 50th anniversary of the Chevrolet big block, GM Performance Parts has brought back a modern version of the ZL1 for your chance to relive muscle car history. The Anniversary Edition 427 starts with a retooled version of the ZL1 aluminum block using the exact same tooling that helped create this legend in 1969. The advantage of the aluminum block is that it offers the completed engine the weight of a small block with a whole lot more power.

With a full list of features, this modern ZL1 is one of the most exclusive big block crate engines ever offered by GM Performance Parts. Fittingly, only 427 will ever be produced, and then the ZL1 tooling will be retired forever. The 427 lucky owners of this commemorative monster can expect an estimated 480 horsepower and 490 lb-ft of torque.

The 427 copies of the Anniversary 427 go on sale in the first quarter of 2008 through GM dealers and authorized GM Performance Parts retailers. Each copy also comes with a complementing Anniversary Owners Kit that includes a certificate of authenticity, an engine plate with specifications, and other items.



Here's a look at the components and specifications of the limited-production Anniversary 427 ? GM part number 19166392:

• 4.250-inch bore

• 3.750-inch stroke

• 10.0:1 compression ratio

• Forged steel crankshaft

• Forged steel rods

• Forged aluminum pistons

• Hydraulic roller camshaft

• Aluminum oval-port cylinder heads with 2.19-inch intake valves and 1.88-inch exhaust valves (GMPP part number 12363392)

• Aluminum dual-plane intake manifold (GMPP part number 12363406)

• 850-cfm four-barrel carburetor

• Chrome air cleaner

• HEI ignition

• Natural-finish "427 CHEVROLET"-script aluminum valve covers with serial number (Anniversary 427)