Silvy6.0

iTrader: (5)

Thanks guys. I will have it built. My only questions are will my harness plug into all of the lq4's plugs like the crank position plug etc. Also, if the L60e will bolt up to the 2000 lq4. I heard there are issues with it bolting up. Can anyone be certain about taking the spacer out?

Silvy6.0

iTrader: (5)

I appreciate all the info.

budhayes3

iTrader: (19)

Well, we're still not sure about the 60E/00 LQ4, but I can tell you that if your harness will not plug into the sensors that are currently on the LQ4, your 5.3 sensors will swap over, so yes you can re-use your harness.

Silvy6.0

iTrader: (5)

Ok. Now if I can find out about the tranny problem. Thanks buddy.

budhayes3

iTrader: (19)

Sure thing man, now I'm dyin to know for sure. I tried some google searching and found a bunch of info that mentioned the wider flange on the 99-00, but nothing that said what trans it would bolt up to

Silvy6.0

iTrader: (5)

I have been too. I have been beating myself up over it. There has to be somebody on here that has done this. I am going to post up in the drivetrain section.

Silvy6.0

iTrader: (5)

I didn't know the 2000 LQ4 had iron heads also. That's not gonna be a good upgrade then right? I would want aluminum heads. My buddy has some LS1 heads. Could I mill and port them to get some power back?

Silvy6.0

iTrader: (5)

I found one out of an 03 Sierra 2500. Going to get it Monday. Will keep everyone updated.

budhayes3

iTrader: (19)

Awesome, now at least you know it'll work for sure...still curious about the 99-00's, just for the sake of knowing.

Silvy6.0

iTrader: (5)

I found someone on LS1Tech and they said it will not work. I will post up the link with all the info. Let me find it again...