Re: White smoke at higher RPMs
I think it sounds like oil, it's really difficult to see while your hanging on the steering wheel and looking in the rear view at smoke all at the same time.
Have someone follow you when you do this. See if it's from the tail pipe or under the car. Your small oil leak may get larger under pressure. If the crankcase isn't venting properly it will push extra fluid and the it gets on the hot parts and you have smoke.
If it's coming out the tailpipe you have different things to look for. If you have real dual exhaust with no cross over you'll be able to narrow down what bank it's coming from pretty quick too.
- antifreeze - your 'spotter' should quickly see it evaporate, it's water.
- oil - it's either pulling past rings or valves.
- oil - could be pulling it in through PVC
Look hard enough and you'll figure it out. If I was working on the car I would leak test the engine. Pressurize and close each cylinder, see where the air comes out.
1969 Camaro SS 350 LeMans Blue
2015 Z/28 - Red
2 x 1967 R/Tís
1977 Power Wagon