Thermactor tubes blocked off are they a thread in the cylinder head ? thanks again
Four in each head when an owner removes the tubes or an owner uses the heads on a non-thermactor car.
The 67 engine assembly manuals have a number of drawings of the system though there are a few little differences between those and how the cars were built it would give you a starting point
Not easy to show a complete system since one in the car there is allot of other things in the way. Complete system has to have about three dozen parts or more.
Big pieces off the top of my head
1- Thermactor tubes - two of them one drivers one passenger side - both reproduced (with 16 attaching pieces)
2- Two check valves (one for each thermactor tube)
3- Thermactor pump (66-67 style) with correct pulley for your application
4- Alternator and thermactor pump mounting bracket with two adjusting area (different depending on time of year)
5- Thermactor air cleaner - attaches to pump - Style and where it mounts depends on time of year
6- two port gulp valve and mounting bracket - attaches to the rear of the intake manifold
7- Various hoses, clamps, and other hardware depending on if the car has air conditioning and other features.
Can't remember if the distributor changes but the carburetor does (from the non- Thermactor applications
