I'm sticking with a 32/36 Weber carb on my Pinto, and wonder what the consensus is on the value of the lip on the standard spacer that directs airflow from the primary barrel to the centre of the manifold. The spacer itself is worthwhile, as it insulates the carb from manifold heat, but the lip appears to be a source of restriction. As the Bard might have said (had he been a Classic Ford owner) "To mill off or not to mill off, that is the question."

I've pondered that one too, can't see that it would pose any real restriction. I remember shaving one down years ago, I'll have a dig in the shed, if it's still there its yours to try.
Cheers Drew

Try a 38 twin choke, I dropped the lip and ran straight in. I had a 1600 gl that I changed a bit when I was leaving national service.1200 pistons(smaller bowl), cam up to 9.1mm and lapped, valves was maxed out. Exhaust was (2x32mm to 1x44mm) into 65mm out. The 32/34 was horrid I then went to 36 dcd no lip re tubed and jetted it ran too lean still ended up with a 38 twin choke. This ran perfect untill I later sold it.
The tranny ext housing was torqued off. Output shaft twisted, 1st gear broken, big six prop shaft twisted and universal needles shattered. side shaft bearings split(sticky tires).
These where expensive lessons. Luckily it was learned on the escort not designed to take the power.

Interesting reading on here. It's for LPG but talks about the size, shape and number of holes in the spacer affecting power curves and engine characteristics. Seems theres a bit more to this small part than I'd ever thought.
Cheers Drew.
 
https://www.fordforums.com.au/showthread.php?t=11463906&highlight=lpg+spacer