I have American Racing 1 7/8 headers, ported TB and intake from Ls2portworks, 3.90 gears and a pretty large cam, G5x3, and thinner head gaskets. Here's my dyno sheet of my buddy's same car stock (didn't dyno mine stock), my car boltons & gears only and now with the cam and thinner head gaskets.

I hot swapped the intake on the dyno before I had the cam, and got about 10 rwhp & tq across the entire graph. That's about 1/2 of what most see with a Fast. The fast really works, I just wish it was cheaper. I recommend the LS2portworks intake if you are very budget conscious like I am.

By the way I recommend giving your springs a few heat cycles before putting on the smoke show!

 

What's the downfall of the large cam? Do you have a raw gas smell in the cockpit or does the car die? Have surges. My tuner does not want to overcam my set-up. He only mentioned the raw smell of gasoline in my car. I was wondering what reasons he had going with a "mild" cam?

My tuner and I did talk about selecting a cam friendly to a L76/L92 Intake and Head set-up in the future. I have an email into him asking him what the cam specs. are for the cam they are custom grinding for me. Where could I look at the puchase prices of L76 Intakes and L92 heads? Are these GMPerformanceParts? I believe there are different stages of the L92 heads. Which one is most popular to the daily driver? I wonder if I decieded to go ahead with a manifold, should I select the L76 and get it ported at LSPortworks and do the L92 heads later? I just bought some nice black Fuel Rail Covers airbrushed with flames. I am not that big on trying to make them work with the FAST intake. Jeff Creech said they had gotten Fuel Rail covers back on FAST installations. I requested some pictures. I expect you have to look at the future on what you plan to do on selecting some of these modifications?? If it makes sense to do the L76 now, I might jump at that.

Your graph represents what mods? That looks like exactly what I am shooting for. Again, I'm interested in the end performance and not the numbers. The numbers of course are a represetative of how the car will perform.

I did not even think about taking it easy for a while after getting my car back. That's a very good idea...Thanks Kevin

 

Spin,

Dave at Cartek just suggested the 1 7/8 kooks on my car with a 2X cam (4X head). Finals stats were 478 Max Power, 412.5 Max Torque with 4.10 gears and the other goodies.

 

See my sig for my mods. A big cam like mine is harder to tune - I tune myself and so it's easy for me to scan and tweak and I like doing it. That gets expensive if you have to pay for your tuners time. A smaller cam needs less tweaking. If I didn't tune myself for fun I would have gone with a smaller cam that is less sensitive. I don't have too bad a smell but I have cats for that reason. Since I race pretty frequently the extra HP of the big cam is of benefit to me.

I have read good customer reviews from CAM, I would listen to their advice and not ty to piecemeal somehing together based on 10 different internet experts. Your car will feel very fast to you with 415 hp or 430.

If you really want the car to feel fast get some 4.10 gears. Best SOTP feel mod with no downsides like cams have.

 

vors did you or have plans of cubeing your motor higher than 400 cubes because daves rule of thumb was under 400 cubes 1 3/4 over 400 cubes 1 7/8. unless the kooks were steped or you stayed with stock cat back. their has to be a reason

 

Dennis,

Right on target. My goals revolved around street reliability and manners, pass emissions, and moderate the amount of noise. So, I did not touch the stock exhaust, just added the hi flow cats. Damn car is addictive and I thought I had enough addictions.

 

I am very interested in 4.10 gears. I bet that makes your car feel like a stump puller. I'm sure these gears are all over the place as far as price. What would be a very rough ball park number for what it would cost to buy the 4.10 and the labor to install? Is that something all tuner shops can install or do most shops specialize in engines?

And yes, I am going to follow everything CAM says to do and not buy something and send it to them without their input. I'm pretty dumb when it comes to these mods, so I take your input and run it by CAM. Remember if I had taken their word verbatium, I would not be getting the 160 degree stat. Jeff said to send it and he would install it. He just said it would not do much for me. Jeff is having me buy everything and having it shipped to his shop for the install. So I'm in charge of buying everything. What does SOTP stand for?

I sent CAM a long list of around 5 questions but I have not heard back from them yet. One was what other small mods we should consider for round 1?

 

Kevinmatt- looks like a good plan of action from your first post, just do a stat(thats my personal preference) in you'll be where oyu want ot be at this stage. Jeff got me 405 rwhp with my A6 with just one of his mild cams and headers and tune, so with the other stuff, it shouldn't be far off from what you want. Good luck

SOTP= butt dyno,lol. Seat of the Pants.

 

You're right Evil Man. I bet I will be grinning ear to ear with what I already have identified. Could you tell a big difference with your first mod?

 

Yepper....stock the C6 A6 runs the 1/4 at around 12.5- 12.7 for the average driver (there is special instances though, with a couple hitting 12.2s, ), but I ran 12.0 flat after just the headers,cam,and tune. The car felt alot stronger , esp in 2nd and 3rd and there's just more overall "umph" to acceleration.Then, when I added the L92 combo, I can say this thing is alot more powerful and pulls so much stronger than stock(as an extra 113rwhp should feel). I can't wait to see your results. Good luck and keep us posted