Ya I know. Just want a noticable ile difference but not the barely able to idle lope lol

Ya the 8.1 was something else I had considered which is basically a 496bbc. Dont get me wrong even with the tired 350 she still moves with pep considering my compression sucks due to.TERRIBLE leak...

Im Dan, a 36 y/o Iraq Vet planning out my first motor swap/upgrade. My truck is a '97 K2500 ECSB with a VERY tired 5.7 and 4L80E (315k origional miles) and a curb weight of 6200lbs. All out HP isnt...