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Discussion Starter · #1 ·
I am fixing up a 78' 280z, and i have some questions about the mixing and matching of different blocks and heads.

I can get a good 83' 280zx F54 block, with flatops. I want to match that with the N47
head that came with my car. This will give me the CR that i am wanting, This is so i can get a higher performance cam.
This along with 6-1 header, 2.5 exhaust, larger throttle body, better ignition....

What could be some of the problems i could face?
What kind of performance could i get?
Should i go with this combo or try to find a different head?
 

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Discussion Starter · #2 ·
Check out this URL, I believe it has the answers to all of your questions.

<A HREF=http://www.geocities.com/MotorCity/2824>http://www.geocities.com/MotorCity/2824</A>/

I also believe that the N47 head was meant for dished pistons, and if you use it with flat top pistons, you might have pinging problems, but the website has all that information for ya.

jA
 

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Re: N47/F54 ??, TOO!

> Check out this URL, I believe it has the
> answers to all of your questions.

> <A HREF=http://www.geocities.com/MotorCity/2824>http://www.geocities.com/MotorCity/2824</A> /

> I also believe that the N47 head was meant
> for dished pistons, and if you use it with
> flat top pistons, you might have pinging
> problems, but the website has all that
> information for ya.

> jA

I have thought about the same block/head combo. Is anyone actually running this set-up right now, or has in the past?

Does the e-88 have the same chamber as the N47? Because it was run with flat tops, right?

Thanks,

Matt
 

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Discussion Starter · #4 ·
Re: N47/F54 ??, TOO!

> Does the e-88 have the same chamber as the
> N47? Because it was run with flat tops,
> right?

The E88 chamber was meant to run with L24 flatops. If you put L28 flatops with it, your compression ratio goes over 10. With that setup, your going to need to probably run premium gas, and maybe use octane booster, because your running close to pinging.

The N47 head was meant for dished L28 pistons.

Remember, the website I listed has all this information, and it explains it better than I can.

jA
 
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