[Gordo2]

Mr. Abbott (Performance Oriented) - highly recommended the book "Weber Carburetors Tuning Tips and Techniques" (by John Passini) as I was tuning and configuring my PMO's.

A good book if you want to delve into theory.

Passini comments frequently that each engine is different (even though they may be built to the same specs / same parts / for the same purpose) - the calculations provide a good starting point to configure the carbs.

For my engine (3.2L with DC Cams GT2-102) - the calculations lead me to buying / installing PMO 46's w/38 chokes. I worked with this config for quite a while trying to smooth out the idle/progression to main circuit transition - swapping idle jets, idle airs, mains etc. I ended up backing the chokes down to 36's which I believe helped the transition, without giving up much for performance (the dyno shows HP drops off at upper RPM - but I didn't notice in my every day driving).

Good luck.