Contour Enthusiasts Group Archives Forums Modifications Forced Induction Used vortech problems

Over this summer I purchased an svt engine with a vortech already on it from my local junck yard with only 46k. I've been doing the work on it slowly over time and just got to the point where I drove it. I know the engine won't run at 100% because I only had it at an ide for a few times since then and old gas is an issue. Theese are problems I've encountered before though since I'm always storing it on deployments. My problem is that it revs so slow. Like I'm trying to accelerate with a 1000 pound trailer out back. I can feel the difference in increased tourqe. It just seems so slow though. It even takes a real long time to rev not in gear. Theese are all not problems I had with the old n/a engine. Even running off of 4 1/2 cylenders. Any thoughts?

Secondary intake manifold runner valves are probably gunked shut with crud. You'll want to check and completely clean the intake manifold if you haven' already.

Oh yeah, check for a plugged exhaust system, like a bad catatlytic converter. I've had that happen before when installing a component that increases exhaust flow. Check to see if it has stock precats...which it probably does and if so you'll have to check it out.
Drop the catback and see if it revs better.
If not, and you've checked out the intake system, added some decent fuel, then you may want to gut the exhaust manifolds or install MSDS headers that were designed to clear the supercharger jack shaft.

Last, if you have a plugged fuel filter or bad injectors it could cause similar issues.

If the vortech shaft has had it's splines stripped out it would basically be a giant restriction in the intake - that may be a cause for the doggishness.

If he didn't do a full rebuild on the obviously shelled junk yard motor then everything else is just a waste of time.

Plus the fact pointed out that the Vortech is 99.97% likely to have stripped splines.

I hope you didn't pay more then a few hundred for this car unless the body is 100% mint.

Disconnect the SC to the Intake, see what happens....

I can fix that SC for ya

This year hasn't been a good one for me. While I was overseas, My humvee I was on patroll in got blowed up. I lived and I have all my limbs and everything. I am like a walking hardware store though with all the metal I have in me now. The worst part of the explosion for me though was the head injury. I still wasn't completely better from the last one and now a bomb threw a rock so hard into my head that it shattered. The rock shattered, not my head. Although it felt like my head was pulverized. The Dr. said that I got somthing like dain bramage. But despite all that I did do a few things right. when I got home I realized that my current engine had seen it better days. I looked online for one and found it only 20 min from me. I checked it out to see if it ran. The car wasn't drivable though. I purchased everything attached to the subframe and more. I replaced coil pack, plugs, wires, hoses, water pump, ball joints, axels, and a lot more. I was trying to do it all right. I may have missed a few small things. I don't remember much though. I diddn't know that I should of checked out the splines though. I at least got it to run. Not bad I think for having just suffered massive head trauma. Now when I go home on Christmass leave I have a few things to do. Thanks for all the info.

daiin bramage

Dude, I applaud you for your service to this country, and your sense of humor.

Yes. I also applaud the fact that your still in the service afterwards.