4.8 to 6.2

[RedHeartbeat]

the LS3 engine will build tremendous power right out of the box and is lighter than any LQ based engine making you instantly .1 seconds quicker just because of the weight savings. You also get a warranty with the new crate engine that you won't have with a boneyard engine. You can buy a weaker engine, build it up and make as much power as the crate LS3 but its still going to be heavier and if it breaks you'll have to pay to do it all over again.

[George C]

the LS3 engine will build tremendous power right out of the box and is lighter than any LQ based engine making you instantly .1 seconds quicker just because of the weight savings. You also get a warranty with the new crate engine that you won't have with a boneyard engine. You can buy a weaker engine, build it up and make as much power as the crate LS3 but its still going to be heavier and if it breaks you'll have to pay to do it all over again.

90lbs isnt much to even consider espeically since the motor in hte vehicle is already iron. that warrenty isnt going to be worth anyting once you mod the motor so what is the real point? also if he is buying if from a boneyard there is no warrenty.

the LS3s arent that impressive to me to be honest. you can get more power for less money with your typical 6.0. everyone is on the bandwagon of hte LS3 heads. sorry they dont do much for me when a smaller CC runner makes more power/torque. their heads come with such larger CC runners and their performance is unsatisfactory. ppl toss on a ported version which flows even more and has a even larger CC runner and still cant touch the performance of a AFR or TFS or ETP.

ppl brag about that motor. its 420hp crank...is it really worth that much more money?