[roadking666]

Hi there, I have located a 2006 silverado with the l33 aluminum engine. I pick it up next week monday. I was just on Chevy's site and did a "build your truck" end noticed there was no Aluminum engine offered. Did they stop making it? Crap I hope not, I just spent a lot of money on this truck, not to mention the price of oil going up. Is the aluminum engine a proven power plant? I read no horror stories on this web site. thanks.

 

[dwill3015]

Welcome to the site!
I copied this about the L33...

L33
The L33 was an aluminum block version of the LM7, and was referred to as the Vortec 5300 HO in marketing materials. Horsepower increased by 15, to 310, over the LM7, and torque was unchanged. It was only available on extended cab 4WD pickup trucks.

L33 applications:

2005-2007 Chevrolet Silverado 1500 4WD
2005-2007 GMC Sierra 1500 4WD
Hopefully some of our Silverado owners with this Motor will help answer your questions.