lbz pistons

[surreydmax]

Hi there new to the diesel world a year ago
bought my 06,best rig Ive ever owned but I have read sevral post that
the lbz pistons are the weak link even witha stock tune this is a conscern as I like to add50- 80 pony's here and there,besides a costly build Im guessing theres not much I can do???

[KEVINL]

THe LBZ pistons are very unlikely to fail with that small of a tune

[blksmok]

THe LBZ pistons are very unlikely to fail with that small of a tune

:agreed:

[jpowel29]

I dynoed 741hp on a stock LBZ longblock. The pistons, rods, head gaskets, etc looked great at tear down (there is a thread on here with pictures). I never left the big tunes in my truck during normal driving and I did many upgrades to help control EGTs. At lower power levels an LBZ should live a long time. Proper tuning is the key.

[surreydmax]

what would be a proper tune ??I just run the edge evo around town level 2-3,I will not tow witht it period..How can I lower egt's in my truck?

[hondarider552]

Anything under 400rwhp IMO is fine and nothing to worry about. When you start messing with efi and racing, it would come up as a concern.

[surreydmax]

Anything under 400rwhp IMO is fine and nothing to worry about. When you start messing with efi and racing, it would come up as a concern.

so if they say are trucks are rated for 360 flywheel,Im guessing that would be what330 rwhp??just a guess Im not sure,evemn If I put 100 hp tune that would nt be 400 rwhp would it??

[KEVINL]

You have to worry about your tranny long before pistons

It wouldn't be 330WHP the allison soaks up alot of power most say 25% loss

[Will]

so if they say are trucks are rated for 360 flywheel,Im guessing that would be what330 rwhp??just a guess Im not sure,evemn If I put 100 hp tune that would nt be 400 rwhp would it??

For reference, I saw a LBZ dyno 2 weeks ago with the Predator set at 120HP. All the truck had was exhaust, intake and the Pred. The best the truck did was 388HP. I was really surprised. I figured it would be closer to the 400 mark if not a little over it.

[surreydmax]

rear wheel hp???

[emiller3]

I would think aroun 300rwp stock?

[Will]

rear wheel hp???

Yes that was at the rear wheels. I talked to Nick the next day at a truck pull and he said they dyno stock between 300 and 310. Kinda makes me sad thinking that my LLY theoretically only puts out about 260ish:bawl::bawl:

[surreydmax]

Yes that was at the rear wheels. I talked to Nick the next day at a truck pull and he said they dyno stock between 300 and 310. Kinda makes me sad thinking that my LLY theoretically only puts out about 260ish:bawl::bawl:
I hear ya brother still better than a power joke though right after all we have the nicer ride imo