Among the advantages of these engines are factory aluminum heads, lightweight composite intakes and in some cases aluminum blocks. Many, such as the 5.3L (RPO LM7) have a cast-iron block with aluminum ...
Lately, it's been all about the head swap. In November '04 we constructed a 2.0-liter CR/VTEC motor that never had the chance to dyno. Then, in the 2005 March and April issues we let loose our ...