wtf you smoking dude, LR4 are 270 hp and 285 torque the 5.3 LM7 was 285 and 325 torque. the heads on the 4.8 are same as the 5.3s all the LS motors love boost
Quote Originally Posted by demonheavymetal View Post
Remember I said those were manufacter claims which we all kno are exaggerrated to all hell. 06gmc 4.8 was listed at 285hp, even on my window sticker, and also on various sites like autotrader, kelly blue book, etc... Y 4.10s not b enough? U suggessting 4.55s? Im looking for harder faster launches but still decent driveability. My motor is technically an LR4, iron block with aluminum heads, but its really just an iron block LS genIII. Also has 12 degrees of valve dwell time, which means it will respond better to boost then other LS designs, future does include a maggie or mb a turbo, but I want to see how much NA horsies I can squeeze outta this tuff lik motor