So, I have a 2008 M6 coupe.

Current mods: Intake/1 7/8 Headers/ECS Devil Cam Package = 485rwhp on ECS's DynaPak.

I'll make this short and sweet - It's quick, but I want more power. I would like to be in the 6-650rwhp range.

The only choices I see here for that amount of power are either a blower, or Nitrous. I have had multiple people tell me Nitrous isn't worth it. Is there anyone on here that has been spraying an LS3 for a while without any issue?

I know the cam I have will not be a good choice for a blower setup. So If I decide to go that route I will have to swap it out (for a blower cam), which means I just wasted 3k on a cam package.

I could do heads (about $3,700), for around what -40rwhp? Doesn't seem worth the money to me.

I'm looking at around 7k for a blower setup, right? I'm getting ready for the "save for a blower comments to roll in"...

Let me have it.

 

I know there are plenty of guys out there with NO2 and love it. But its would not be my first choice.

First, there will be the time and expense needed to get the bottle refilled.

Second, the bottle takes up space and you have to drill holes for the bracket, fuel lines, and NO2 lines.

Third, there is always the risk in the back of my mind that the AFR is off and parts get damaged.

Fourth, you have to use it only over 3000 rpm or it can backfire into the intake manifold, blowing it up and perhaps the hood, too.

To get over 600 hp, you will need forced induction of some type. I'll let the guys who have the various types of superchargers/turbo charges offer their opinions, but I like the newly released Edlebrock E-Force because its a complete kit, has available a warranty, looks like it was meant to be there, and fits under the stock hood. It uses the TVS2300, which is based on the well developed Roots/Eaton system used in many of the OEM applications. It may not make the most horsepower, but there is something to be said for its flat torque curve in everyday use. If it would have been available when I did my head/cam package, I would have gotten this instead.

 

http://forums.corvetteforum.com/c6-f...p-694rwtq.html

This is on a stock block very impressive.

 

Pretty impressive! Ive got a C6 LS2, mild cam, Longtubes and corsa, with A&A V2 Kit only running 8PSI and on 91 oct. Im at 606rwhp and 536rwtq. By the way does ECS sell a meth kit? I have convinced myself I need one!

 

If you do your own work things can be a lot cheaper... You could take your heads out and send them to get them ported... Figure arond $1500 for that.
Or install your own blower... That's what I did. I think a base kit goes for around 5K nowadays? You can keep your cam with the blower.

 

First you need to set a budget then look at the options from there. Either power adder will do the trick as well as a combination of things too.

600+ has been seen with a 427 n/a with a real good top end as well.

 

Now what.....



realize that 485 rwhp is alot. Modding is an addiction where sometimes more is not enough or never enough. Invest your money or just buy a z06/zr1.

 

The thing is he doesn't want to swap the cam out since he just spent the money on it, it would be a big waste of that money to go in and swap for a blower cam, so on top of a S/C kit install, it would be that additional cost to swap the cams.

Yes, ECS sells a meth kit. I don't know if they would ship one, but I know they offer them at their shop.

 

http://www.eastcoastsupercharging.co...hol%20Kit.html






.

 

That cam works fine with a supercharger. Im aware of its specs and it will make more peak power with a supercharger over a smaller blower cam. If it makes more power N/A, it makes more power FI. You would freak if you saw what some tuners use as blower cams. I have seen 16 degree overlap cams in FI applications.

 

Maybe ECS will chime in here, I'm curious why they recommend that I not use my current cam. I wonder if I can run 6 pounds safely until I'm ready to swap it out for a "blower cam".

I'm shooting for an August S/C install.

 

I have just over 600rwhp on a N/A C6 A6 that Spin speced for me, and I love the Tq and flat power band, but it has it's draw back
NO TRACTION!! I have a Dry Nitrous kit sitting on my shelf, that I can not use due to again lack off traction.
That being said its a ball to drive, it drifts real good!!

 

So what did you end up with?

 

Have any of those people actually had nitrous themselves. I usually find that the vast majority of people that say that have zero first hand experience.

Nitrous will outperform any other mod at this point. It needs to be professionally installed and tuned. Nitrous adds more TQ than any other power adder. Adding 150HP from a supercharger will add about 90rwtq. Adding 150HP from nitrous gets you about 275rwtq. Tq wins races. I've had both but have to say that nitrous wins hands down. Unless you're running drag radials outback forget about anything bigger than a 75 shot if you expect to hook (and therefore accelerate) in 2nd or 3rd. A 75 shot on top of your current power will be at about 560rwhp and 560rwtq. Anything bigger is only going to make you faster in 3rd and 4th. A 75 shot will last about 20 races being shot only in two gears.

The biggest advantage to nitrous on a manual trans car is that it is immune from boost pressure losses when you shift gears. A 600rwhp car from boost on an M6 sees 128-129 trap speeds due to this. A 600rwhp nitrous car will trap 136-138mph.

There is no difference on any LS engine as to longevity with nitrous. the LS3 is no different than an LS2, Ls6, or LS1. Assuming the install is done professionally (using a jet chart for fueling is not effective or safe)
You must be tuned with a wideband. Assuming that, your stock bottom end will handle about 600rwtq. S/C guys with 650rwhp are at 550rwtq. My preference is a dry shot for safety reasons and this thread goes through the ways to implement it best:

http://forums.corvetteforum.com/c6-f...wet-shots.html

You will never see a nitrous backfire with a dry shot. If you tune properly, its as safe as a s/c regardless of what the internet nay-sayers who never had it, say.

If you go the cyl head route, dont bother with the LS3 ported garbage. You will see 15-20HP. Sell them and get a set of trick flow 235's. They are what fits the LS3's bore and will get you near 525-535rw with the right cam.

 

No, $1100

CNC work = 550
Serdi Valve Job = 250
CC and milling= 125
SS Ex valves = 80
Assembly= 95

 

That is very reasonable Charlie. I wish I still lived near you shop

 

On top of that, Charlie's shop is really quality oriented