Performance Problem

[XfireZ51]

Originally Posted by fullboar

Thanks for all the helpful suggestions. I'm going to try and get in touch w/ Cory and let him diagnose my problem. Pretty sure the secondarys are the problem because the car runs like it has 250 HP. Just doesn't have any spunk. Lingenfelter went through this motor when I first got it and he said it made 505 HP on his dyno. I knew John personally and that was before he passed away. Go to http://www.facebook.com/media/set/fb...3&l+5ac4448de8 to see some pics of my car. Thanks again guys.

Is the Power Key on FULL? And you don't get a lean condition code or a
CEL light that flickers on and off when you hammer it?

[VetteMed]

Originally Posted by LGAFF

you can peek between the runner with a flashlight to see if they are opening

Lee, will they open under a no-load condition regardless of throttle input?

[LGAFF]

Originally Posted by VetteMed

Lee, will they open under a no-load condition regardless of throttle input?

If you are asking if you can test it without the car on, I am sure you can...but I think you need to access under the plenum......I just take the TB cover off, lean over the engine and blip the throttle...even if you can see it at first, the movement of the actuator will catch your eye....pretty obvious.

[VetteMed]

Originally Posted by LGAFF

If you are asking if you can test it without the car on, I am sure you can...but I think you need to access under the plenum......I just take the TB cover off, lean over the engine and blip the throttle...even if you can see it at first, the movement of the actuator will catch your eye....pretty obvious.

Well, more out of curiosity, than for my own needs, but I didn't realize that the secondaries would open at no-load (out of gear) situations. Interesting.

[Z51JEFF]

To check the secondaries with the car off,not running.On the ECM,C plug or second plug from left find the pink-black stripe wire.Back probe this wire in the plug from the back side to make contact with the wire.With the key on listen for the pump to cycle,no start,ground this wire and the secondaries will open.Ive used a dental tool with an alligator clip connected to a wire.The ground Ive used is at the fuel regulator.This is on my 91 but the DVD I have is of at least a 92.Hope this helps.

[WB9MCW]

My pleasure to help you post your fine
"Lingenfelter LT-5" 56 CHEVY Ride for all to see
-- Nice Job !!!

[PhillipsLT5]

SCHWEEET!

[FU]

Damn that engine is beautiful !! Need to fill that engine compartment....think turbo's !

[LGAFF]

I would be interested in how the intake/air filter bridge fits into the front of the airhorn.


Looks great

[WB9MCW]

HERE IS A 57 CHEVY THAT I HAD IN MY FILES