I was wondering if anyone has gotten 400 whp or more out of a stock bottom end 6.0L (Lq4 or Lq9)? With a H/C package, LT's, tune, the usual bolt-ons (i.e crank pulley, intake, exhuast, etc.) If so, what transmission where you going through the 4l80e or 4l60e?

 

I imagine it would be very easy to do this with a 4L60E. Are you talking about using the low-compression 6.0 heads, or a different type of head?

 

i don't know of anyone with a truck that has done it personally, BUT, Stupidfast made over 350 with his on stock heads and a mild cam with a big stall and 4.10s w/20" wheels


i'll have one putting down over 400 at the tires pretty soon, should be done next friday. depends on how busy they are before i can schedule an install time.

 

An aftermarket head...I see people in 5.7L w/ a good H/C package and supporting mods putting down around 400-410 rwhp (if not more) with a 4l60e...I would think that the 6.0L with a good H/C package and supporting mods could also push similar numbers but also more torque, given the same tranny (4l60e). Am I wrong? If stupidfast has made over 350 rwhp with a mild cam, big stall 4.10's and 20's, and I assume the 4l80e, I would think that another 40-50 rwhp could easily be found in a nice set of heads, a good tune, LT's, e-fans, crank pulley, intake and exhaust (if he doesnt already have them) and some other small mods.

 

stupidfast doesn't have a 4l80e, he has a 4l65 built tranny....the trucks lose a bunch of power through our drive shafts i'm sure...those things are HUGE.

mine is a completely rebuilt internal 6.0 new bearings all over, stock crank and rods w/ diamond pistons nitrous filed rings, balanced, professionally assembled by maybe the best builder in the LS1 game. all machine work (other than porting heads) will be performed by him also. havn't decided on a cam yet, but i'm definatly not putting the cam from the 5.3 in the 6.0.

 

A 5.7 can and has made up to 420-440 rwhp on a pretty regular basis. This is with average to big cams, but with the added cubes of the 6.0, I imagine you could run a fairly stout cam in the truck without too much worry. I don't see it as a problem with a 4L60E. I don't know how much more power the 80E eats up.

 

Would that be coming out of the boxes on the floor?

 

Is it all aluminum too?

HAHAHAHAH!!! Did you mean owned like this Santiago??
https://ls1tech.com/forums/showthrea...light=football

Or do you mean owned like this?
https://ls1tech.com/forums/showthread.php?t=33743

Or perhaps like this?
https://ls1tech.com/forums/showthread.php?t=33765


Let's see a dyno sheet there SLOW

I believe there's a guy at pacific-audio.com with 400RWHP and a 60E

 

when it's done i'll personally mail you one....it will probably be hard for you to read since it will go above 240 unlike your's. just let me know and i'll help you figure it out.

 

I think Blacksheep put down very close to 400rwhp with his LQ9, P&P Heads, cam, tuning and bolt-on's.