Ed note: Sources for quotes and related information: Doug Rippie Motorsports, General Motors Technology Group, Hypertech, Inc., Jenkins Competition, Lingenfelter Performance Engineering, and Lunati ...

Back in 2004, GM Performance Parts shipped us a complete LS1 to evaluate. Looking back, we really threw the hammer at this one. We tested every off-the-shelf cam, manifolds and cylinder heads, ...

Street Legal Performance of Toms River, New Jersey, was on the cutting edge of LS1 performance before it was cool. Now the Ultra-Z is up for auction and could be yours for a song! Hamburger had gotten ...