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I just purchased a patriot ls6 heads and a .600 comp cam and i was just wondering if it would be safe to run a 150 shot with a stock bottom end??? With the new heads and cam does anyone have a rough guess on how much hp i would be putting to the ground??  

Patriot puts out a very nice set of heads, and they make very good power, when combined with the proper size cam.

A stock bottom end on an LS1 will hold a 150, some get away for years with it, and some can't. There is a lot at stake with the tuning that goes into the car after the kit has been installed. Make sure your air fuel ratio is dead on, and to be safe, you may want to stay on the rich side with a mid 12.5:1 or lower. This way will allow you to run the shot safely, and you will rely on the integrity of the kit to function properly to save the motor.

You may also want to install dual solenoids that are activated at the same time, so that you can have a backup if one stays open. This isn't common, but can happen, and it will not be pretty if it does.

You could honestly run a 125 or 150 shot for a long time, and the motor will love it. Just make sure you don't get a half ass tune in there.

Predicting what you will make power-wise is tough. It will usually leave you disappointed, and craving more. If your car is a 6-speed and the cam is bigger than 230 duration, I could easily see around 400rwhp NA, but there are too many variables to guess a number accurately. If you have an LS6 intake car (01/02 or swapped) you may see more, but there is no telling.

What are the specs on the cam, and what else can you tell me about the setup on your car?  

Thanks for the reply, but my car is pretty much stock except for the heads and cam. I just had the rear end rebuilt (bad move on my part should have bought a posi) and had a stage 3 spec clutch installed with the loud mouth cat back exhaust setup. The specs on the cam are duration 256/266 and lift 580/600. For the heads the specs:

Brand NEW 243 Castings
New OEM GM 2.00"/1.55" (non-sodium) Valves
CNC Ported 227 +/- Intake Runners
Flow 300 @.600"
Patriot Gold Springs
Titanium Retainers
Super 7 Machined Locks
Viton Rubber Seals
3.905" Bore, 227cc Intake Runner

The only thing that hasnt been installed yet is the 150 wet shot NX, still just alitte worried but thats about it.  

ace:
Thanks for the reply, but my car is pretty much stock except for the heads and cam. I just had the rear end rebuilt (bad move on my part should have bought a posi) and had a stage 3 spec clutch installed with the loud mouth cat back exhaust setup. The specs on the cam are duration 256/266 and lift 580/600. For the heads the specs:

Brand NEW 243 Castings
New OEM GM 2.00"/1.55" (non-sodium) Valves
CNC Ported 227 +/- Intake Runners
Flow 300 @.600"
Patriot Gold Springs
Titanium Retainers
Super 7 Machined Locks
Viton Rubber Seals
3.905" Bore, 227cc Intake Runner

The only thing that hasnt been installed yet is the 150 wet shot NX, still just alitte worried but thats about it.

Wow, that is a pretty hefty duration! Have you experienced any piston to valve clearance issues? That lift is a little more conservative than most radical cams, but that duration is up there.

If you would really like to be safe, then you should just spray a 100-shot. You could get away with running the 150-shot, but you may want to work you way into it. Start with a 100, then move to a 125, then the 150. I assure you that the bottom end can take this, depending on your RPM. What RPM would you be turning. I don't see any problem with you pulling to 6500 on that, but when you start to push the 7,000 barrier, you may want to start planning for something to break. Some cars go years like this, other will only go a few months. It's a risk, but the motors have been able to take the power and prm combination.

Plenty of LS1s push the 7000rpm barrier. I, personally, spin to 6,900 and have the limiter set at 7,050. Running on almost 2 years now. I am cam-only, so I feel somewhat confident in this gamble. There is always the risk of stretching the rod bolts in this area, but we'll see.

If you keep the rpms low, then you should be very safe. That would be about in the 600rwhp range, would it not?

As for your rearend, the 10 bolt in a 6-speed is not a good combination. Look into a Dana 60 IMO. Wont ever break that mofo, and it's cheaper than a 9-inch. The 12-bolt is a good rearend as well, but not AS strong, but plenty stronger than the 7.5 inch 10-bolt.