I have a rebuilt 1961 261 in my 41 (car). Dual 2 barrel carbs, RV2 cam, headers, dual exhaust. Maybe 5000 miles on the engine.
It has the stock PCV system, which is a PCV valve at the top of the 'road draft' tube (on this system, the 'road draft' part (the part that exits downward) does not exist. It is only the 'stack' part and the PCV is at the top of that). The engine runs absolutely GREAT. I have a 5 speed behind it and get as good as 24mpg.

A few years ago I came to a hard stop (I decided at the last minute to NOT try and beat the yellow). I looked out the rear view mirror and there was a HUGE cloud of smoke. At first I thought it must have been the guy next to me, but I was the only one there. The engine continued to run just fine and it never happened again. Until last night.

Last night I came to a not-as-hard slow-down so I could take a left turn. Immediately after the turn I smell oil burning, looked in the mirror and there was the HUGE cloud of smoke again. Drove the rest of the way home just fine. No smoke.

I'm not losing any sleep over this but I am curious over what this may be. Any ideas?

Thanks in advance.
Joe

PS Did I mention that this engine runs GREAT!

I've added a picture of my PCV
Attachments
261 PCV.jpg (57.22 KB, 124 downloads)

Last edited by Joes41; 08/22/2018 3:25 PM. Reason: Attahcing picutre