blue smoke

[1882tahoe]

I have a 03 5.3 tahoe with tsp 220 cam, springs, and a melling high pressure oil pump. At full throttle I get a little bit of blue smoke out of the exhaust, could this be blow by? Thanks

 

[Chevy305]

How long have you been running this cam? How many miles on the engine? I'm willing to bet that your valve seals are gone.

 

[1882tahoe]

For about a month now,125xxx.

 

[Chevy305]

Ya I'm willing to bet that you blew a valve seal. Remove your valve covers and look inside each valve spring to see if they are still seated.