My truck the ESC went down . I put in a regular HEI I messed with it springs,weights,vacuum can initial. I never got it to run as a total package as well as it did with ESC. Same with
@SirRobyn0 he chronicles all the changes he made over the coarse of a year,finally when it was all said and done,it was back as an ESC truck. He documented it all recorded gas milage etc. I can tell you mine runs better with esc. But I didn't documented anything. Working ESC is best in my truck. I suspect yours never worked right. So it's real similiar to the I took off a messed up Qjet and put on an Edelbrock and it runs great. But you never hear anybody say I compares a good Quadrajet to an Edelbrock.