KW Baraka

iTrader: (7)

LS3 heads/intake only.......

KW

05CTSV

iTrader: (16)

Well the results are in. These mid length runners on a stroker 418 were worth around 800 more rpm than the stock ls3 intake. We ran it up to just shy of 7300rpm and it didn't start falling on power until around 7250. Previous dyno with stock intake and solid roller cam was 480hp. The new hydraulic BTR cam and this intake yielded an additional 43hp and 20tq. Not too bad for all motor.

JakeFusion

iTrader: (7)

Those are nice gains.

NAVYBLUE210

That's Excellant results! What were the Cam Specs for
The LLSR & the HR and the HP & Torque Peaks for
Each.

Hope to have Dyno Results this Friday with MAMOFIED
LSX with Mid Length Runners as well.

05CTSV

iTrader: (16)

Cam specs were a bit different on the hydraulic. The LLSR was 238/246 .646/.629 115+4.
The BTR cam is 239/254 .624"/.595" 114+3.
The dyno sheet from the LLSR.

KCS

iTrader: (20)

So the new power was with the intake and a new cam?

JakeFusion

iTrader: (7)

I would expect the new cam to carry higher. But nonetheless, a nice gain with a hydraulic roller. Would have liked to see a larger LLSR used with the mid-length runners. May have pulled even higher.

North*power

iTrader: (1)

Would installing these runners pretty much negate the gains going to a MSD intake would have? Does anyone know if there are updates on cathedral port runners yet?

sillysspeed

iTrader: (21)

They told me they will never make them for cathedral ports which I think is a big mistake

05CTSV

iTrader: (16)

Yes, new intake and new cam.

North*power

iTrader: (1)

Yeah absolutely! I would really like to see what I would gain up top with my current set up.
Does anyone know a tuner that has experience shortening the stock runners and reforming a bellmouth on them?
MJM

NAVYBLUE210

Just went through your build thread for cylinder head & comp.
Data.
Was LLSR DYNO with 4.10:1 & 5th Gear VS
HR with 3.55:1 & 4th Gear? If so that is another variable
Perhaps 6-8 RWHP COST 5th gear VS 4th.
Also HR is considerably larger, LLSR translates to
Roughly 232/240 in HR adjusting for lash.
Looked like HP peak with stock LS3 ~6500 RPM
VS 6800 RPM for mid length FAST with better Carry
To 7300. Also going from 8* exhaust split to 15*
exhaust split is a HUGE Change IMO along with the
+ 7* Intake duration.

05CTSV

iTrader: (16)

If you go back to my first post in here, we knew full well going into it that it would not be an apples to apples comparison. However, the mid length did its job, got the power up past 6400. I wish I had the $ to have done back to backs of each setup, but did not. Best way to see how it works, go buy one and test it on your setup

Mercier

iTrader: (15)

I was close--bought it, took pictures, bragged, sold to a friend. Ran like a bat out of hell under my desk in a box.

Was really glad to see power past 7K.

NAVYBLUE210

Done! LOL

slogo

haven't seen this posted yet.

Mercier

iTrader: (15)

That's a bit more interesting(at least the long to mid comparison) than previous videos. I don't get why FAST doesn't sponsor a video like this where they really test the full gamut. At least 3 different cams with the three different runners on same engine. Then maybe same on a stroker.

NAVYBLUE210

I spoke with Kip, driving back from So Cal after my results,
He shared some results on a 388" (destroked LS7, 3.622")
Mast 305s, 13.00:1 Comp with LLR ~262*/278*, .700"+
made peak torque 583 @ 7200 RPM (I made peak HP @ 7100-7300,
with mid length), peak HP 760+ ~ 8400-8600 RPM, Engine Dyno.
So... with peak power
@6500, shifting no higher then 7000 Long/Standard Runners.
@7000-7500, shifting 7500-8000 RPM = Mid-Length/HP Runners.
@8000+, shifting 8500+ RPM = Short/Race Runners.

KCS

iTrader: (20)

It's going to be a little while until I get results, but I got the LSXRT with the shorter runners. Jesus on a motorbike, this thing is tall!!

Mercier

iTrader: (15)

Same runner model # as the car intake(short runners)?