joes1966

I was just curious as to how much boost and or horsepower people have gotten out of the gen 3 stuff as far as rods etc..

99 Black Bird T/A

iTrader: (4)

Highest I've read about was ~850whp to 870whp. No idea how long last, probably not too long.

Some ~650whp seem to last pretty.

joes1966

thanks so much was just curious.i have a couple gen 3 laying around and I usually stay around 17-19 psi.

Che70velle

iTrader: (6)

Power adders such as boost or nitrous will change the outcome of the life of any rod. What kind of rpm will you see?

LilJayV10

iTrader: (39)

On paper I should be making 700+ish on my SBE LS1 that see's 7k on 13psi.

It hasn't blown up...yet.

RonSSNova

iTrader: (3)

My buddy beat his 01 5.3 mercilessly. On the rev limiter every burnout. 20 psi boost. Car ran mid nines.
Never skipped a beat.

Forcefed86

iTrader: (4)

There has been over 1000whp on a gen3 4.8 on a dyno. Id almost say you're better off with the 4.8. Just don't ramp any real power into it until 5500+. I ran mid 9's for a year or so on a gen3 5.3. Turned it up and went 2 8 sec passes before blowing it all to hell... I didn't follow the high rpm rule... but It was a super low compression deal with a cam that didn't make decent power till 5500 plus. Dished piston 5.3 with 317 heads/ls9 gaskets and ls9 cam. All the "wrong parts" according to some...

zachand799

i’m not trying to steal your thread I figured it would be easier than making another; btr offers a rotating assembly kit with “boosted ls pistons” from wiseco… is there any large difference in those pistons versus others ? and will the rods being used matter a whole lot if i’m staying at ~600 hp with the same motor as stated above ? i don’t need a crank so the kit isn’t really what i need but the whole “boosted pistons” does have a lot of info on the web. thanks guys. also I have no idea how to start my own thread. lol.

91 Z28

iTrader: (3)

Didn't Richard Holdener make like 1300+ on a gen 3 6.0l with twins @29 psi??

Che70velle

iTrader: (6)

I’ll say this…regardless of whatever assembly is supporting the boost, be it forged or OEM, your tune is everything. You miss the tune, you’ll miss that engine.

01CamaroSSTx

iTrader: (3)

I'll add that forged rods are more likely to bend than break.

Rancherlee

yes, but he also cammed them to help keep the torque down in the lower/mid RPM range. HP doesn't kill rods, cylinder pressure does, especially near peak torque. That said, I think that 3rd gen 6.0 still had peak torque over 1200ft-lbs.

Forcefed86

iTrader: (4)

Kinda... That motor also had nice heads, intake, cam and made 530hp NA.

Engine dynos will spit out some super inflated numbers IMO. Or the real world numbers calculated by weight and trap are just under inflated... How ever you want to look at it.

Holdner made 910 on 10lbs with that gen3 6.0. You have to run closer to 20-25psi on a factory long block "cam only" motor to make 900ish hp in my experience. Unfortunately we don't get to see what any of Holdners "1000 hp" motors actually run in the 1/4. I think most would underwhelming...

Remember Freiburgers F-BOMB camaro? Dyno'd 1500hp at Westech engine dyno. Couldn't manage to get in the 8's with it. Trapping the same as my maybe 900chp setup at similar weights going 8.70... in an SBE 4.8 I'll add. So take the "1000+HP" westech dyno numbers with a gain of salt IMO.

ddnspider

iTrader: (26)

This all day. I'm amazed at the stuff that blows up out there.