[len911]

I have a track car with a 3.2l engine using 46IDAs that seems to be running rich. The original carb setup was done with my Supertrapps with no disks. Since the original setup, I have installed the disks back on the Supertraps. I believe the additional back pressure is causing the engine to go rich.

Engine is a twin plugged 3.2l, ported & polished, using Pauter rods, Ti retainers, 964 pump, Cosworth 11:1 pistons and an Elgin cam similar to a GE80.

Engine comes into its own from 5500 up and could probably spin to 8K easily, but I never go over 7.2k. There is really no flat spots, but exhaust looks/smells rich. Car pulls nice but there is a lag (bog down?) at about 3k to 5K that could be caused by the cams or perhaps due to carb richness.

Carbs are currently using 60 idle jets, 160 mains and 165 air correction.

I'm trying to lean it a bit, should I go with 155 or 150 mains? Should I change the idle jets?

I searched and I could not find any info on setting up large carbs on engines bigger that 3.0l.

Thanks! Lou