Well, where to start ...
I run a 900 carb engine in an 851SP chassis, a 750SS carb (wife's), a 620i monster, a 583SS DD and a 620i DD.
They are all different
The 900 engine has lovely grunt, but is rough below 3k (like all carb engines I have experience of) and runs out of puff above 8k (like all carb engines I have experience of) , and has a fairly fierce clutch.
The 750 is not bad for grunt - whereas the 583 is (obviously) lacking a bit down low.
The 620i pulls strongly and smoothly from about 2k up to about 10k
The 750 and 583 clutches are really much smoother and gentler than the 900. The 620 has the best clutch (its the newest design after all)
The 851SP handling is sublime.
The race monster handling is pretty good but nervous.
The race SS handling is pretty good overall.
The road SS is slower handling than I like.
The road monster is just too nervous and twitchy.
Personally, I'd like to try the SSi for handling, cos I think a zippier 750 engine (or 800 !) sounds a really good compromise.
What was the question
