85A / 85C rebuild.

[David C]

I am rebuilding an SU carburated 85A engine for my 400 but have a spare 85C head and Solex carbs that I could use to upgrade. Does anyone have informed opinion of which is better? As the workshop manual has detailed instructions for retro-fitting Solex I imagine this was the preferred option back in the day. Also is the original 85A cam profile OK or is there something better available now?

No need for crazy speed but I am considering fitting an overdrive and this may need a bit more grunt. I know some on this forum are not keen on this but I fitted overdrive on my 403 long before the gearbox adapter kit was available and although it was a lot of work it was well worth it for me.