I've never used SU carbs on a Chevy inline but I think it's a good idea to try it especially since it'll look "period correct" on your stylish roadster. During my sport car racing days everyone used to shorten and stretch the dashpot springs,add ATF fluid for even response,the ATF seemed to be more stable,and play around with the needles.I would leave them stock until you gauge how they work and I would also invest in a UNISYN carb device(available at Summit Racing) for balancing them. Are you fabbing your own intake manifold?
