How will a car run with the valve lash is set to tight? Low Idle? Running real rough, like chugging? Does it feel like its got a bad miss? What the reccomend way to set valve lash on an LT-1?

 

If it is too tight the valve will be open a little all the time. Making it run rough. A 1/4 to 1/2 turn past zero lash is fine. How much did you turn it?

 

I dont know what its set at, the motor was built at an engine shop. I have been trying to tune this new motor for months. It has a Hot cam and other mods including pcm reprogramming. The car runs weak and seems to be "chugging" and slight back firing through the intake. I have gone through the whole ignition and so on and can't get the car to run right.

 

Here are various methods of adjusting the valve lash.

 

I was already checking out your web site. By the way cool sight! Anyway do you think I have the symptoms of the valve llash set to tight?

 

All the symptoms you listed in the first post could be from too tight lash.

 

Juat re-did the valve lash per instuctions from your web sight and man it totally cured the problem! The car runs like a raped ape! I just cant wait till I get my bottle filled! Thanks a bunch. You are the man!

 

Makes all the difference in the world.

Hey, I have been through your town. Did some rafting on the Arkansas up around Buena Vista. I love Colorado.

 

Yeah, I like it here alot, except for the snow in the winter. Its hard not being able to drive the camaro when its snowy out.