I'm with you, mounting the carb at a nose down angle is not ideal. The Blue Thunder intake is available with a flat carb mount, designed specifically for our Panteras.
When automobile motors are mounted in some boats, they are mounted flat just as in the Pantera. I've seen the angle carby spacers Ron refers to in boat shops as well.
Although the angle is not ideal, when hot rodders raise the rear end of a car, or lower the front end, sometimes worse angles are encountered by the carby than what's encountered in the Pantera, and they run just fine. Many an owner has been running his Pantera with similar angles to the carby for more than 30 years.
I ride off road motorcycles. Carbys on our off-road motors encounter all sorts of extreme angles on a continuous basis, with seldom a hiccup.
I wouldn't consider optimizing the angle of the carby a waste of time, but I doubt you'll measure any benefits.
cowboy from hell
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.