A junkyard 5.3 LM7 can hit 500+ whp for less than the cost of a BMW B48 short block, making it the top budget performance ...
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 ...
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