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Discussion Starter #2
> Which set up offers better low end torque?
> I'm also concerned about gas mileage.
> 83 na.

the webbers are better all the way around than the SU's. With the proper cam, exaust you will see over 25mpg. I got 28mpg out of a 76 280Z with webbers plus the other goodies. I recomend a .460 270 duration cam with a good header/2.25 exaust.
 

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Discussion Starter #3
> the webbers are better all the way around
> than the SU's. With the proper cam, exaust
> you will see over 25mpg. I got 28mpg out of
> a 76 280Z with webbers plus the other
> goodies. I recomend a .460 270 duration cam
> with a good header/2.25 exaust.

Is that cam good for low end torque or gas
mileage, or both?
Thanks
 

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> Which set up offers better low end torque?
> I'm also concerned about gas mileage.
> 83 na.

I would have to say that the SU's offer better low end torque. A constant velocity carb is hard to beat, under most circumstances. I know a guy that used the Weber DGV's and he regretted the change. He said that they did not enhance performance enough to justify the cost of conversion. Stock SU's offer good driveability and low end. They are easy to tune and are original equipment for early z cars.
Why are you changing from fuel injection???? I would stick with fuel injection if I was you. The fuel injection is going to be much more efficient than either carburetor and should provide you with adequate power. Why not concentrate on a new cam/throttle body. Maybe increase compression or something. No sense in ripping out fuel injection to replace with antiquated carburetors.
 

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Discussion Starter #5
i just want a Z with the torque of a V-8.
I'll probably stick with the FI, I really don't
have any problems with it. Thanks.

> I would have to say that the SU's offer
> better low end torque. A constant velocity
> carb is hard to beat, under most
> circumstances. I know a guy that used the
> Weber DGV's and he regretted the change. He
> said that they did not enhance performance
> enough to justify the cost of conversion.
> Stock SU's offer good driveability and low
> end. They are easy to tune and are original
> equipment for early z cars.
> Why are you changing from fuel injection????
> I would stick with fuel injection if I was
> you. The fuel injection is going to be much
> more efficient than either carburetor and
> should provide you with adequate power. Why
> not concentrate on a new cam/throttle body.
> Maybe increase compression or something. No
> sense in ripping out fuel injection to
> replace with antiquated carburetors.
 
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