I have a 1991 lt 80 and it runs good I rebuilt the top end it has about 120 psi now but when I try to take of it has no power and it sounds like the is air being blown out of the carb and it will go dead but when I get it rolling it runs great smokes some but I think it is the rings have not seated
I not sure if it is the clutch because I had it off and maybe I left something out I don't know.. but when I try to get it going and give it gas it starts to go and bogs down and I hear the air blowing from the carb and I let off and it will keep running .. pease help me I going to take it to the shop if I can't fix it ...and I can't afford it.. thanks

 

Welcome to the forums.
We'll help.
You did the rebuild? You put the arrow on the piston toward the exhaust (not forward)?
Double check the head nuts (115 inch pounds).
You cleaned the carb removing both jets and the float needle seat? Loose the o-ring?
Let's go from there.