LS9 camshaft with GMPP heads.

[onebad1le]

The stock pulley is 2.95 and will probably make 10 to 12lbs of boost 630 to 640 if u have headers and no cats. my pulley is bigger then stock 3.2

[smokum]

In testing the 2.75 made roughly 8-8.5 psi and the 2.5 made rougly 9.5-10.0. Im running a 10 overdrive lower and a 2.30 upper and im seeing 13 psi. But im bigger ci and bigger cam etc.

[Juice2SS]

I will be running ADM's higher psi pulley. Sounded like 11psi.

[onebad1le]

The ls9 cam has no overlap if your cam is bigger and overlap u bleed off boost
Also if u have a bigger engine need to spin blower faster to fill up the volume
I tried the 2.55 and it made too much boost 15lbs

Smokum what compression are u ? And are u running any extra stuff like meth ?
How power are u making?

[Camarojt]

Originally Posted by smokum

Lol. Camarojt

Juice 600 rwhp is no joke. Instant torque is fun but dangerous also. There is no driving down the freeway at 60- 70mph and stabbing it to the floor. I did it just to see and it will go sideways. Throttle control is more needed that is for sure.

I welcome too much power! I cut my racing teeth having to feather the throttle on street tires when I was in my younger years doing street racing every weekend.
Maybe I get to do that again soon!!

[Tampa Tuning]

Originally Posted by Rhino79

Phil, I've tuned that same setup about 40 times lol. I wanted to log the car in person to see/ feel what it was doing because I never once saw it die or even close to dying on a log. We did battle some cam surge. But when he put the ls9 cam in, it doesn't have the vararam now either.

Quite possibly it was still a calibration concern, who knows at this point. But it's a common combo I deal with daily.

Your like me. I can read and change a lot based on my scanner data ( if its Emailed to me), but im better at touchy feely if im actually in the car and its not doing something right.

The LS9 cam is relatively smaller than aftermarket cams. Sometimes its tricky with the transmission shift airflow tables and marrying that up with the final airflow minimum Vs RPM Vs gear. I use the final idle airflow minimum to prevent stalling and surging as the car is slowing down for a traffic light. I use the transmission shift airflow tables only for stall prevention when moving the shifter from drive through neutral to reverse....and back to drive again.

Then I feel your pain if you try and calibrate it remotely and you don't know how the install went and are you fighting mechanical issues or vacuum leaks.

I didn't know it was a boosted car based on the first couple posts. I thought it was a LS9 swap for the LS3 and I couldn't figure out why someone would want to do that.

My Bad

[smokum]

Im at 9.5-1. No meth and hp not known. Lol. Rear diff is about to explode so no dyno time yet. With the maggie maxed out with a manual it made 745rwhp 742rwtq. With the lsa blower it seems to have more torque. We are going to dyno it once my zl1 rear diff goes in with my m6 trans.

[Juice2SS]

I'm slow with the graphs. My fault. They are coming.

[62nalide]

Hurry up and slap that LSA on dude lol

[Juice2SS]

I hear feedback from work today. I'll know all details and my time back in Dallas. I'm ready for this trip to be over.

[ADM PERFORMANCE]

Originally Posted by smokum

Ill give mine when its on the dyno. I bet andy lunch on the 1st pull the other day and nailed it exactly. I called 463rwhp and it was 463.4rwhp. Lol. With the heads and cam with 10psi boost and 93 octane it should put down 600rwhp.

You have been present for more first pulls than myself... Figures you know what my combos do

[smokum]

Lol. I have a good memory sometimes.

[Sack Rat 2SS]

Originally Posted by Juice2SS

I hear feedback from work today. I'll know all details and my time back in Dallas. I'm ready for this trip to be over.

Just checking to see if you have a time or date to begin the LSA install?

[Bo White]

Originally Posted by smokum

Lol. Camarojt

Juice 600 rwhp is no joke. Instant torque is fun but dangerous also. There is no driving down the freeway at 60- 70mph and stabbing it to the floor. I did it just to see and it will go sideways. Throttle control is more needed that is for sure.

Depends on were you live. When I was in DFW my GXP spun surprising often. Here in Alabama hooking 600rwhp of PD boost at 60-70mph isn't an issue on street tires.