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Old 09-11-2014, 10:24 PM   #1
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Looking to make my 94 faster for cheap.

I have always wanted to do HCI to my 94 gt but I cannot afford the heads I want, or the cam and tune right now. I have the explorer intake, but I haven't installed it yet. So far the car has 3.73 gears, stalled and shift kit auto, and catless exhaust, otherwise the motors stock. How can I make it powerfull for cheap. I am considering a wet nitrous system, and throwing the explorer intake on just for s**ts and giggles because it would need a tune for the nitrous anyway right? Or should I look for a used centrifugal supercharger, and just run it on the stock setup. I'm really not shure, but right now I'm probably looking at like 185rwhp witch is just a god dam shame for how much gas it uses.
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Old 09-11-2014, 10:25 PM   #2
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Spray it,

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Old 09-11-2014, 10:27 PM   #3
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Spray it,

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I have never messed with nitrous before, can someone give me the low down. Like do i need a tune? Is the stock fuel pump good enough? What size shot can I run without blowing the motor? Can I continue to run 13degres timing, or will accidental pre detonaton blow my upper intake apart?
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Old 09-11-2014, 10:32 PM   #4
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Yes you will need a tune, however big of a shot will determine how much timing needs to be pulled.

As far as the fuel system idk what the pushrod 5.0's are good for.

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Old 09-11-2014, 10:33 PM   #5
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Thanks
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Old 09-12-2014, 08:06 AM   #6
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In what condition is your motor in? I would do a compression and leak down test to see how she is feeling.


Nitrous kits are out there used pretty cheap.
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Old 09-12-2014, 01:51 PM   #7
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Fuel system on a GT is something like a 90lph pump and 19# injectors. Rails are good for around 450hp. Going to need a new pump and injectors for nitrous. Also you will want to replace the lines going into the rails with braided steel. They are a known fire hazard in stock form. Russell makes the fittings to do this.

HCI is pretty much not worth it on a 5.0 anyway. You'll make way more for your money with a power adder and retain the stock driveability. If your heads need a rebuild I WOULD suggest replacing them with a rebuilt set of GT40s out of the JY instead of the stock E7 heads. Stock rebuilt GT40 heads and a stock GT40 (explorer) intake with a stock GT cam and a power adder is a 450rwhp car easy. The rest of the car has to be able to take it tho.
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Old 09-12-2014, 02:02 PM   #8
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Fuel system on a GT is something like a 90lph pump and 19# injectors. Rails are good for around 450hp. Going to need a new pump and injectors for nitrous. Also you will want to replace the lines going into the rails with braided steel. They are a known fire hazard in stock form. Russell makes the fittings to do this.

HCI is pretty much not worth it on a 5.0 anyway. You'll make way more for your money with a power adder and retain the stock driveability. If your heads need a rebuild I WOULD suggest replacing them with a rebuilt set of GT40s out of the JY instead of the stock E7 heads. Stock rebuilt GT40 heads and a stock GT40 (explorer) intake with a stock GT cam and a power adder is a 450rwhp car easy. The rest of the car has to be able to take it tho.
I always ask the same question on here and you give me the same spiel, I'm sorry about that. But yea I cant swing the 1,500 it would most Likley cost me (best case scenario) for HCI. Also im not so shure if my 5.0 is in any shape for nirous. It's young with only 67,000 miles on it but... It has developed a ticking coming from the passenger side closest to the fire wall cylinder. It almost sounds like a exhaust leak, or a bad lifter. I'm not shure. I'm going to really examine the motor on the lift at work, and do a leak down test. Also to make shure the motor is in decent enough shape for nos. What's the largest size shot a stock 5.0 from 94 can handle. I know the bottom end isn't as good as the earlier 5.0's
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Old 09-12-2014, 02:24 PM   #9
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If you don't have the $1500 for a h/c/i swap, how do you have the $1500 for adding nitrous?

Either way, adding anything more than 100hp, especially all at once, is going to play hell on your transmission. So I would stay with a 75 shot until you have a chance to do more to your car.

You might consider just shedding some weight off the car. Less weight is the same as more power (to a degree).
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Old 09-12-2014, 02:33 PM   #10
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If you don't have the $1500 for a h/c/i swap, how do you have the $1500 for adding nitrous?

Either way, adding anything more than 100hp, especially all at once, is going to play hell on your transmission. So I would stay with a 75 shot until you have a chance to do more to your car.

You might consider just shedding some weight off the car. Less weight is the same as more power (to a degree).
A zex nitrous kit costs around 500 and injectors tune and fuel pump another 400 from American muscle. That's the price of just cylinder heads combined. Also my transmission is not a weak point, it a gaureteed to be safe up to 450rwhp by the guy who built it.
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Old 09-12-2014, 02:37 PM   #11
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LSx swap it.

The old 5.0 is a dinosaur and has no concept of cheap power. It's pathetic really.

I have a 94 GT bored and stroked to 347 CI with a vortech V1 @ 10 PSI and it's a good bit slower than my 99 Z28 with just H/C/I, let alone on the 150 shot.

Investing anything into one of these engines and expecting any sort of decent power is a waste of time and money.
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