lt1street

As the title say my long trim BLM always seem to be 6 off from each othere. For instance driving down the road light throttle stuff the left side will be 128 adnd the right side 122. It seems the left side is always lower. What are some of the possible causes?

WS6T3RROR

The causes are the lt1 intake manifold, my car does this as does every other cammed built car i have seen. With the exception of guys running the little crane cam and the lpe 211/219. Try giving your car more throttle input and get the airflow up in the 45-60g/sec range and keep it there for a bit, I bet they come right together there.

One thing that can be done to minimize the issue is when the intake is off for cleaning take the pipe plugs out of the bottom and run a drill through the idle air feed passages and make sure they are all the same size, there is usually one or more that is off sized. There is also other things that can be done with the throttle body idle air bypass hole. But quite honestly just drive the car and dont worry about it. I've seen stock lt1's that were further apart than that. The only thing you might accomplish is to help some low speed bucking and surging, and I doubt you have that the cc305 which drives like a champ in my experience.

lt1street

thank u for the help

WS6T3RROR

Here is what originally turned me onto it, 3 of my holes were smaller sized... all on the same side. Now its just a standard thing I always do when I build an lt1.

http://para.noid.org/~lj/Boom08/images/IdleAirOops.jpg