lt1 ecm's don't like big cams @ all. need to be tuned/prom burnt.

did you check for vacuum leaks?

egr stickin open?

and gas since july? , yes dump it. the gas that we have had for the past 2 or 3 years sucks. it drops about 4 points in octane overnite if left open to air. and will cause other issues in small motors (lawnmower,weedwhackrs etc..) you need to dump the fuel add new or add about 5 gal. of 116 cam 2 or vp

its tuned already

do you have a check engine light ? Cause I had a similar problem and it was a bad knock sensor. And if your running roller rockers and dont have a lt4 knock module it'll retard your timing and make your car run like poop.

i would set valve lash around 24thsds

knock sensor is disabled and no check engine light. it seems like its an issue with idle control or tune to me but i only saw it for a couple minutes.

draining the gas wouldn't hurt. maybe get rubber caps for the vacuum ports? i think you had tape on one? haha

This is no SR monster. Or at least I think its not... :rofl:

Should be between 3/4 and 1/2 turn past zero lash.

H.R. FTL

you should not got by the turn method. you should measure with a dial indicator the amount of travel fully compressed then split the #. that would be the (GM) amount of lash desired. usaully around 100-150thsnds i believe.

yea HR cam... the tape was temporary onthe vacuum port... ill go get a bolt to stick in there tomorrow so thats done... only place it would have a vacuum leak is egr ports that are blocked off but the old gaskets were no good so i used some rtv... maybe they arent sealing good enough... i know what your saying matt about checking stupid things but i already did and got shocked a good couple times from checking for spark hahah... i got a long weekend comming up to screw with it... but for htis week ill do the gas and close up that one vacuum port... if its bad gas adam that belt is free hahahaha oh and matt you said yours ran like poop without any exhaust on it?? after you added some back pressure it ran better? becuase thats somthing else i could try too but then i need that pipe expander from you adam haha and does anybody know the thread pitch and size on stock o2 sensors for lt1... i have to get some plugs off ebay or somthing

Well lemme know, I'll swing by and stand ten feet away from your car and throw ideas at you. ;)

just throw a bad o2 in it and cut off the wire.
or they make o2 plugs. shore motorsports might have them,
i can check on thread pitch later.
i beleive its pipe thread, so you should be able to get brass plug at hardware store.
i'll let you know

I had mine setup with just an ORY for a while. Ran fine though. I don't think thats your issue. Other than you getting deafened by it trying to diagnose.

1/2 npt

Did you try hooking a timing light to each wire to verify spark on each cylinder coming from the coils at least? When I did the headers on my 2000 SS it started up and idled a little rough and smoothed out when I revved it. I put it in gear and it shook like crazy. I had forgotten to put the #8 plug wire on the plug! I remember waiting so it wouldn't get in the way of tightening the header bolts. But with the cam it probably makes it tougher to tell. If you pull the plugs you might find one that is covered in fuel.

yeah did you ever pull plugs? it seemed like it was running very rich but i wasn't certain. also, the data stream had an a/f reading, is that even possible?

i know the plug wires are on i checked them like 100 times but it seems like they arent... i bought 1/2 inch pipe thread plugs and they didtn fit im pretty sure the thread is fine metric... no i didnt pull the plugs... im gonna do the gas thing first.... then if that doesnt work ill pull them

Random, but how is plug access with those headers?

not to bad im pretty sure that with ltcc and the headers combined... not counting time to make the wires.... i could do a tune up in way less than an hour...

well if you pull the plugs one at a time and one is soaked in gas, obviously that cylinder isn't firing and fresh gas won't change a thing. i would do it first personally. they do make plugs for o2 bungs though, i bet napa has a listing.

ill check with napa on the fittings... i want to change the gas anyway... but i checked for spark to all the plugs... unless its a faulty plug... at this point thats the only reason it wouldnt fire...

Check your rockers. Please. :|

At the very least, I wanna see their sweet ness. :lol:

not yet... its a little more involved to get my valve covers off with the coil setup... i wanna try a few things first... before i start going internal engine with it... if it comes down to that though ill make sure your there..

Oh you can't avoid me being there. ;)

I'll try and come bug you and Adam this weekend. Maybe show you how an engine is supposed to run...

8-)

id love to see how an engine runs because im not gonna lie im a little dissapointed in mine right now hahah... just another hurtle to over come though... but i may have a break through... pcmforless guy just e-mailed me back and he said running open headers in closed loop will make it run like crap and that i should disconnect the front o2s untill i put some exhuast on... so im still gonna change out the gas tomarrow i think and disconnect those o2s for now and plug that vacuum port and let her rip hopfully it will idle...

yeah but you were in open loop and it wouldn't hold an idle. i mean i dono bout today but thats how it was yesterday on the scanner.

i dont know then... are you sure it was in open loop? i dont know what the difference is if someone wants to school me... i mean its worth a shot... im still gonna change the gas and disconnect the front o2's to see what happens... if neither of those work ill pull the plugs and see what is going on... i know all the coils and wires are good... but smelling the gas almost seems like its dumping to much gas and thats what the guy said it would do with open headers in closed loop.... i donno way to kill my dreams of it idling tomorrow adam... i almost slept a little easier...