just got the 383 running and noticed alot of smoke coming out the tail pipes so i havent ran it that much the engine is brand new and i wanna play it safe could this just be from the assembly lube? or??

 

The rings haven't sealed yet

 

Alot of smoke? Doesnt sound right to me, pull spark plugs what do they look like, do a compression test if you can. The heads been gone through at all?

 

When I break-in a new motor, i have a temperature gun. Make sure oil level is correct and not overfilled. Coolant full, good fuel, start the engine, check guages, use temperature gun and exhaust will read 300 to 475 degrees. If 1 is very low its dead, if one is very high 600 + its major lean. Stop. If all ok, keep it running and monitor guages. Set timing adjust mixture if carb. Read air fuel with wideband, 12.5 to 13.5, then create a vacuum leak for about 2 to 5 seconds, then plug it for 30 seconds, over and over till it stops smoking. Some time 30 minutes to 1 1/2 hours. I then drive it easy varing speed 40 to 50, with easy accelleration, while driving, every 30 to 120 seconds let off the gas completely for 10 seconds to suck oil up to the rings, do this for about 2 hours. At 500 miles change the oil and be moderate on the throttle for the first 2000 miles some full throttle ok for a few seconds, then change to full synthic oil and drive like hell.

 

Carb? aluminum intake manifold? color smoke? which intake manifold gaskets?

 

everything has been gone threw, and its not colored smoke its just normaled smoke im starting to think its from when i painted the engine bay i scraped some stuff off and some might of got into the Y pipe and that it could just be burning that up