Originally Posted by 67 Swedish Convertible
Thanks alot for that! I'll try and get all numbers etc off of the seller. Don't be surprised if I show again asking you all to help decode numbers..
That's why we're here is it
Oh, btw - you won't find a "draft tube" on a 67 block
"Draft Tubes" were illegal after 1962 ...
You will find the pre-67 rear block crankcase vent provision.
A cup adapter assembly, for the rear vent hole, ran to a hose that had a PCV valve in it, that mounted to an adapter/elbow that was mounted to the base of the carb at the intake - this was used on standard 49 states vehicles.*
On RPO-K24 equiped vehicles, a hose ran from the air cleaner to the rear tube assembly at the vent opening - this was used on CA emission and High Altitude vehicles. **
Do a search for 'PCV' or 'Draft Tube' - I think you''ll find it discussed lots of times ...
* = in this system the air flow was - from the Breather Cap on the oil fill tube, through the block crancase and then out the rear vent opening adapter through the PCV to the base of the carb/manifold. (air flow was 'out' ... )
** = in this sytem the air flow is - from the air cleaner base, through the adapter to the block crankcase and then out throught the PCV valve, mounted in the oil fill tube, to the base of the carb/manifold. (air flow is 'in' ...)