ok... now i am really corn-fused. i had always thought my 2000 5.3 was an lq4. read an article in PHR for a rocker and pushrod install and they called it a lm7 (however, it was done on a 04) so... what the H$%@ do i have? what is the difference in the two. LQ4 should have 101mm bores and the LM7 has like 90 something right? correct me please.

 

It is indeed a LM7. The LQ4 is the 6.0 they put in 3/4 ton trucks(lower compression than the LQ9). LQ9 is the 6.0 put is the SS, some Escalades and the VHO(10:1 compression).

 

ok. that is a start... what is baseline hp and tq #s for this thing? for an EC even before mods it was pretty quick for a whale

 

2000 5.3 is rated at 285/325 Sure you weren't thinking about the LM4? It wasn't available till 03. It was rated at 290/330

 

not quite positive on that. it was a shocker... the whole time i was thinking lq4, it wasnt. ahhhh. what else is different? is it atleast a 4l60e? damn, maybe i dont know as much as i thought.

 

Yes it is the 4L60E. Unfortunatly.

 

why is this? i thought this was the trans to have, seems lots talk about the G80 as a piece. what is the diff?

 

G80 is the locker in the rear end. Nothing to do with the tranny. The 4l80e tranny is the tranny to have. It comes in 3/4 ton trucks with the LQ4 motor. 4l60e trannies break under just about any significant horsepower.

 

Or you can dump 3grand in to the 60E and pray that it holds up like I did the 80E swap is just to much in a 4wd IMO and I think I will be fine with an extremely built 60E. Damn 5 poinion planets are 450 bucks.

 

When/if mine blows, I wanna 65.