better be getting to work putting that 4L80E in..

 

Waitin on u to hand deliver that flexplate so I can take u prisoner to help with the conversion....

 

lets meet halfway..... oh wait, that might be kinda difficult..

 

I am not sure but it looks like it could be valve float or knock.

 

If it is valve float, my LS6 springs aren't doing their job well enough?

 

I have close to the same setup as you with the ls6 springs and they seem to work good but I haven't had it on the dyno yet. I had stock springs on my 5.3L without out the cam and it looked a little like that on the dyno with boost. It wasn't near that bad but it did float a little and it was spiking like yours. It would deffinitely help to log it some and see what it is doing.

 

Have u ever ran into burst knock, in he tuning. Ive never seen it on a dyno but it makes it a hell of a ride on the streets. Have u had it turned up this high for a while?

We can log it if u want.

 

I have been seeing a lot of burst knock with my setup recently but no real knock. Do you guys tune out the burst knock and see if is really detonating? Sorry to highjack.

 

I didn't have it at 13# for very long. I may have had it at this boost maybe once or twice before, but it seems to run strong on the street. I don't usually run it hard unless I'm at the track. Hopefully logging it will figure out what's going on.

 

Just zero it out in the tune. THres a table that determines how many degrees it pulls, jsut zero it at the correct ECT, full running temperature.