The LM7 is one of those fly-under-the-radar performance engines. We've seen tuners get four-figure horsepower ratings out of this motor, but to most drivers this is the 295-hp motor found in Chevy ...

LS engine swaps are all the range, and while there is certainly a case to be made for the power potential of a solid LS-based small-block, the need for complicated electronic fuel injection scares ...

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 ...