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Re: COMPATIBILITY QUESTION???

I don't think so -- assuming everything is stock. The 71 uses 2 SU "round top" side draft carbs that are connected to the engine by a unique 2 piece intake manifold. The 710 carb (if I am not mistaken) sits on top of a manifold and flows from top to bottom instead of side to side. A single carb feeds the 4 cylinder 710 engine. A pair of carbs feeds the 6 cyl 240 engine.

That doesn't mean you could never get one or the other to work. It just wouldn't be practical.

There are several alternatives that can be used on a 240 engine instead of the stock SU carbs. These include Mikuni and Weber carbs. Also, some people have installed a different manifold that enables them to use Holly or other USA carbs.

As a rule, if you are replacing carbs on a 240z model, you would want to stick with SU carbs made no later than July 1972. These are known as the "round top" SU. The later Flat top SUs generally are not as easy to keep in tune and provide less power at the expense of economy and lowered emissions.
 
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