Look at the last picture. You have to make this bracket.
The throttle cable will then attach to the wheel on the tower.
It will take the place of this long yellow hex rod. I put the rod in the picture to show the orientation of where the cable attaches to on the tower wheel.
There are many variations possible.
The wheel on the tower in my set up is the Mr.Gasket universal pivot. It takes a 1/4"NC hex bolt and there will be two lever arms which it comes with that need to be trimmed down to use inner most mounting holes, i.e., the shortest combination you can make it.
The clearance for the throttle cable is VERY VERY close to the distributor. If you don't put it where my bracket does, you will bind the cable by too tight of a radius turn.
You also need to supplement the throttle springs on the carbs and the cable to insure the throttle wont't bind and will close.
That's why there are two additional Mr.Gasket throttle return springs on my system.
There NEVER was an out of the box throttle kit for this application even from Detomaso. You have to fabricate as best you can.
If you ask 10 different mechanics or engineers you will get 10 different answers. The only thing that won't vary is that the wheel is still and will always be round.
If you are stubborn and want to resist that fact, be my guest, but you will be just spinning your wheels.
My linkage works and stays the way you set it.
The over/under linkage is difficult if you vary in any manner from this design. You will wind up over centering one side of the carbs and you will never be able to sync the carbs at both WOT and idle.
The only way to eliminate that and give you an alternative is to reverse one side of the carbs so that they all face the same way.
If you do that though you will loose a noticeable amount of throttle response right off of idle because the line of sight to the valves is wrong on one side.
It does make the linkage easier to deal with though.
The linkage on the Webers initially is often beyond even a top technitian to deal with unless you have previous experience with it. The Pantera linkage is a little unique. It can be very challenging, specific and even the manifold is designed to handle everything only one way. It is fun for me to make it work though. Others may enjoy it as well? You will need lots of patience with it but once you "get it" it no longer is such a big deal.
A "Weber" 351c set up in another chassis has differences.
It definitely will challenge your understand of geometry. You will now have to match intersecting arcs and lever angle throughout their travel at every point, not just starting and ending points.
It ain't easy pal.
Oh, that silly bracket looks flat in the picture, but it isn't. It needs to be twisted so that the cable is pointing up about 10 degrees or so to clear the reinforcing buttress cast into the manifold.
