I rebuilt by ls 6months ago, runs great and just recently I started hearing a rattle. It sounds like its coming from the dizzy. Its obd1 swapped and furled dizzy wasn't brand new...any body else have that happen??

Bump on the Turbo build threads...ill be using those soon....

 

Sorry for the typos....damn phone...

 

Depends on exactly what this "rattle" sounds like... Could be the bearing has failed or even your valve/s need adjustment. Pull the cap off and inspect for loose screws...