GM Performance Parts has become somewhat of a joke. The real ZL1 back in the late 60's was a true muscle engine, eventhough it had 12.5-1 compression (fuel was available at the corner gas station then, wish it was today), it produced over 600hp. Well GM wants to "celebrate" the 50th anniversary of the big block and do a ZL1 427 with 480hp and less then 500lbs of torque. (oooooohhhhh wwwoooooowww that's scary, read about this on halloween). Heck how long did it take GMPP to do a 600+hp crate engine.... Well lets just say almost 600cid and call it a 572 like no one had ever done that before. Well GMPP's now ZL1 will probably burn a quart of oil every 100 miles like their 454HO and 502HO.
I am sorry this is not right and a joke to the Legandary big block "RAT" as we have come to call it. My buddies and I back in the mid 80's could get 550hp on pump gas with a 427 with the greatest of ease. Heck my 327 did 480+ with effort back in 87.
Sorry for the rant, but I will never ever buy a crate engine from GMPP. Some may dis-agree but how could the General do such a disrespectful tribute to a legend and give it the power of a decently built small block....
Here it is.......
The Anniversary 427 – Limited Edition Crate Engine from GM Performance Parts
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.
Maybe we should have Jody go to GMPP and show them how to build a real big block.....

Thats my vote...
Blessings,