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Discussion Starter · #1 ·
I have a 1978 280Z which i bought that had no engine or tranny, i bought a new remanufactured engine from Motorsport Auto and a 5-speed from a Z wrecking yard in Arizona. I'm going to get the 4bbl carb manifold, 3-into-2 headders, 2.5 turbo exahust, 240Z European Distributor, with a solid poit breaker plate,8mm performance wires, Crane HI-6 ignition and coil, a Holley 390cfm 4bbl with 50cc accelerator pump, vacuum advance. I'm also going to get a performance cam from Motorsport Auto with the specs .480 lift @.50 lash, and 260 deg duration. Motorsport auto perfromance valve spring and lash pads, Oil cooler kit, high volume oil pump, Short throw shifter, limited slip differential, Centerforce II clutch and a HKS 10lbs lightweight flywheel. How many horsepower should i expect from this motor?
Thanks for your attention -->Alan :eek:)
 

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Discussion Starter · #3 ·
Re: How much performance will i get from these mod

> First, does your state have a smog test if so you might have problems passing it. Second, I only heard bad stories about using a 4bbl carb on a Z engine. You see the 4 bbl carbs are for engines that have their intake manifold on top of the engine like V6 or V8. Third, if you wanted to use 4 bbl carb you could have done a V8 conversion
using a small block chevy. How much did your
light weight flywheel cost?

I have a 1978 280Z which i bought that had
> no engine or tranny, i bought a new
> remanufactured engine from Motorsport Auto
> and a 5-speed from a Z wrecking yard in
> Arizona. I'm going to get the 4bbl carb
> manifold, 3-into-2 headders, 2.5 turbo
> exahust, 240Z European Distributor, with a
> solid poit breaker plate,8mm performance
> wires, Crane HI-6 ignition and coil, a
> Holley 390cfm 4bbl with 50cc accelerator
> pump, vacuum advance. I'm also going to get
> a performance cam from Motorsport Auto with
> the specs .480 lift @.50 lash,
> and 260 deg duration. Motorsport auto
> perfromance valve spring and lash pads, Oil
> cooler kit, high volume oil pump, Short
> throw shifter, limited slip differential,
> Centerforce II clutch and a HKS 10lbs
> lightweight flywheel. How many horsepower
> should i expect from this motor?
> Thanks for your attention -->Alan :eek:)
 

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Discussion Starter · #6 ·
Re: How much performance will i get from these mod

> You will have to rise the compression of the engine. You can do this two ways. Buy pistons
that rise the compression or you can shave the
head. You can also port and polish the head.
Buy your self a electric fan and ask around about
triple SU carbs.Go to this web page it will tell you how to shave the head and you can Email him if you have any other questions.
Good luck
 
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