I bought the GM Hotcam 219/228 with whatever the hell lift it has. Anyway, I installed the springs, retainers, seals, and cam the other night. I started it and at first it wouldnt run without idling it at 1100 rpm's. Then for the last day or two it would only run while I was actually driving, and when I came to a light it would stall. Welll I got it dyno tuned today and programmed at the same time.

Before cam install 302rwhp and 320lbs of torque

I dyno'd it and got 291 rwhp and 308 lbs of torque my air/fuel is 13.8.

I now have the dyno tune complete and that ended up being my best run.... My air/fuel is right on now and its no faster. Im ready to total this car into a tree. Someone please help me. The only things that might cause an issue, is that the lifters are a bit noisier now than before, but that might be because I didnt put an oil in the valvecovers before I started it. So yeah, I might have scarred them a bit.

Please help

Tim

98 TA A4. Lid, Dynomax bullet, lowered, and thats it.

 

ttt

 

My only 2 suggestions would be 1 get atap and check to make sure your not getting alot of knock. 2 maybe you put the timing off did you double check to make sure you lined up the dots?

 

alrite well you have a lid and thats it? You may want to look into some LongTubes and Y-pipe get a cutout too, and an LS6 intake. The car is clearly choking in an attempt to breathe with a cam. That should definetly help alot. Then get the car retuned. That shoudl solve your problem. The car isnt breathing enough for a cam. You have to get bolt ons out of the way before you dig into the motor.

 

You need exhaust. (headers)

 

Without bolt-ons would he actually lose power after upgrading to a mild cam? I figured he would at least gain a little.

 

hmm? nah.

what he did was gain more intake (through the same tiny slit infront of the airlid) but most importantly more extake (ie exhaust: pumping out through the same tiny *** stock exhaust manifolds..). yeah im going to second the "car is choking" notion. trying to force more than can flow down a pipe is going to clog it somewhere.. i think after some LT headers and mayb a new ORY and a good tune he should see some nice gains..

...and if not: mayb wreck it into a telephone poll? we need all the trees we can get to help clean the air for ppl like me who drive cars w/o cats and pollute it

/tek.

 

Have you all read about the T-Rex cam yet? Using STOCK heads, that cam produces 451 HP, 406 TQ. Now granted, the computer must be tuned, and that is using a ported TB, an LS6 intake, and headers, which Tim doesn't have, but even without those parts, the T-Rex cam would still be making probably ~425 HP.

............SO, this leads me to believe that something is seriously wrong with Tim's situation. How can you dyno 302 HP / 320 TQ before a cam install, then only 291 / 308 after?! I think My84Z may be on the right track. If the camshaft was installed with the timing marks out of synch, that will definitely cause the engine to not run right, and trust me, that type of thing has happened before.

 

How good does the trans work. The first thing that I thought of was that the trans is slipping.

 

Check to make sure your throttle blade is opening 100%.

 

You are comparing a 242/248 - .608/.612 - 110 lsa cam to a 218/227 - .525/.525 - 112 lsa cam? The hotcam makes a lot of noise but not a lot of power. It depends on the free flowing exhaust to make its power. Look at the higher duration on the exhaust side compared to the intake side on the hotcam. Uncork the exhaust and go from there.

 

Just an update. Instead of getting headers, I am going to sell this hotcam and go with the new Z06 cam. Reason I did the hotcam is because people stated that it wasnt that choppier over stock and would give alot of power. I cannot do headers yet due to warranty. I know that I might get luck and no adjuster will come out, but I would rather just get it out of there if all it is doing is loping, and losin power. The cam marks were right on, I took it apart last night. I am going to just get the Z06 cam and maybe some 918 springs and install them. Anyone interested in a GM hotcam and blue springs?

Tim

 

I'm not trying to compare the Hotcam to the T-Rex cam, but my point is that both of them are supposed to be improvements over stock, and while one of them does show gains, the other one doesn't, and that doesn't seem right.

 

The hotcam will void your warranty much much faster than headers. The hotcam is lobey and your dealer will hear this. The LS6 cam is a good idea. It will sound stock and make good power. However, you need headers either way. Just get something with cats and whose to say anything. FLP makes longtubes that allow you to take them on and off. Someone correct me if im wrong, but I do think it is FLP.

 

I seriously doubt a cam that huge would make 425 hp without boltons. The exhaust on that cam is incredibly high and without LongTubes it would seriously have no where to go. With a cam like that in the car and no bolt ons I say you would pick up at least 60-70 rwhp just by adding lid, ls6 intake, headers and cutout. Ssimply because of the DRAMATIC increase in flow of the exhaust.