I think all years of LQ9s and all motors after '05 used the stronger cracked cap rods and floating pistons (as well as LS2s).

 

No, ALL LS series engines are crack caped rods but press pin was the first design. Some High performance applications started getting the floating pins in the ls1 around 02, the LQ9 in late 03 and The rest of general engines switched by late 04 in to 05.

The factory pin is around .945. you can re-bush them to run a standard .927 pin

The later press pin rods like used in the LS2 were a stronger design.

 

You want me to take a pic of my pressed pin, non-cracked cap 2000 LS1 rods?

 

Sure

 

Now at 12 ish psi (20deg. timing) I get 490torque , 414 WHP
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Made more HP (468) with stock springs and a looser converter. Like there is just a HP barrier around this car. Did some logging for IAT (at the throttle body), 80 degrees (70ish amb. today) so no issue there. It does have a 24x12x4 IC.

Stupid stump puller stock cam? Kicking my self in the butt for not springing for at least a Z06 cam...

FWIW, a stock 5.3L in a sand rail (slightly muffler-ed headers and a intake, manual transaxle but with big CVs and gears) has pulled 255WHP.

 

obviously i have some cubes on you but see my sig. oh yea turn up the boost some!

 

I'm working the boost up, don't want to chip another piston LOL. Trying to ease into it.
What's your timing at 15psi on pump? Running 92oct non-ethanol.

Ready to dump some real gas or some methanol just to get it done.

 

too much timing.?

 

Meh, 18 degrees did even worse IIRC.

 

uh like 13 degrees on wawa cat piss 92

 

I guess I'll drop timing down low and crank the boost.

 

fromwhat ive seen thatis the best option with these motors, theydont like alot of timing

 

Got out some head phones and its seems you where right on the money with 13 deg. , pushed it to 16 psi and rattle rattle No wonder why I chipped one at 20+deg
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So with 15psi, 92oct., C4 and these high turbine pressure turbos (3.5psi on a 7psi spring) this is what I get on my mustang dyno.
I think these 60-1 compressors are surging on spool up because it hits 5psi quick but doesn't hit 15psi till 4500. I'm giving the BC 100% duty till 4K but it just won't spool any faster.

 

whats the rundown on the whole setup? that way we have it in one post lol.

 

2001 5.3L LM7 Stock expect trickflow valve springs
T3/60-1 stg III turbine, .82 A/R T3 turbine housings
log manifolds, 40mm gates
24x12x4 Air/Air
Artcarr C4 reverse manual w/ brake
PTC race $900 converter (3-3.5 stall)
3.05 gears (stock 8.8)
325 50 15 M.T. DRs

 

whatcha tuning with? kind of odd that it spools like you say, hows the timing out of boost and transitioning into boost look?

 

A Haltech E6X runs the fuel (standard standalone, MAP based).
And and MSD6LS runs the ignition.
@ 0psi and 3000rpm I'm at 26 degrees
@ 7psi /3000rpm I'm at 13 degrees
Now that I look at it its pretty conservative.
Its like there is a long time between 5psi and 15psi AKA turbocharger in surge.
And the large compressor / smallish turbine supports this.
I wish they where stg.5 turbine wheels

 

That would make sense with the turbine wheels. Have you checked BP on the hit side?? I'm running my timing map based, Iean I have 5* in the rpm base but the rest is map based.

 

Boost pressure on the compressor side? IDK I've used 1/2 of the same core to make 378WHP @ 20psi and it was octane limited. The intercooler HAS to have a lot more left in it.

On various projects we've established this dyno to be be VERY conservative.

 

sorry backpressure on the hot side lol