Compared to the cast iron LT1 block used in the previous models, the LS1 shed a staggering 95 lbs thanks to its all-aluminum block with iron sleeves. The following year, however, GM decided to put ...

Of course the reason for bringing up the Firebird in the first place is to point out a close cousin of the car the LT1 Firebird, sort of a bridge between the third generation and the LS1 fourth ...

Mike Whitehouse from G-FORCE Motorsports has a nasty '96 Impala SS (pictured above) with a GenIII - commonly referred to as the LS1 - installed in place of the stock GenII LT1. It's punched out to ...