hey I just put in an newer 2.8 in my ride (65,000) and gave it a tune up. I was thinking because its running the best it prob. ever will, I should try a little nitrous??? who makes the cheepest kit for my motor??? what size shot? will the v6 hold up to it? with a five speed and stock motor (besides k&n) also a dynomax cat back exhaust what will my 1/4 mile times be?

 

1) If you want
2) Dunno - I hear the 5.0 Mustang kits can work on our setups, from NOS (The Holley Brand)
3) 75hp max
4) Should... be sure you've got a good clutch, or you'll eat that
5) Mid to high 15's, I'd say.

 

What was the rear gear for an '83 f-body, 2.8, with 5-speed? Was it 3.42?

If not, score a 3.42 rear out of an 85-89 2.8 f-body with an automatic, rebuild the brakes, and throw it under. You'll have to re-use your brakes on the 85-89; your '83 uses SAE ("standard") thread brake lines, 84-up uses metric.

 

3.42 rear with a T5

 

I have said this many many times before: If you want nitrous, use the kit from an 86-95 5.0 Liter Mustang. The only problem is that your car being an '83 has a carburetor, and the kit I have been talking about is for fuel injected cars. I don't know of anyone around here who has put nitrous on a carb'd 2.8 liter in an F-body, but obviously the five-oh Mustang kit isn't going to work for that.

You could just get yourself an adjustable plate style nitrous kit for a 2bbl carb. I know that NOS used to make that for carbed V6 and 2bbl V8 models.

What year is your block? If it is from 85 or earlier, I wouldn't use more than 50 HP shot. Sometime in the mid 80's, GM changed the main bearing size and the cranks on the newer ones are stronger. If your block was from an 86-up car, then it should handle 75 HP pretty well. I am not sure what year the crank change was, but someone on this board will know that. Also, with a plate system, the nitrous and fuel pressures are much more critical to correct proportioning. You will probably have to put a higher volume fuel pump on your car if it is a mechanical pump.

 

The best thing to do is run a Mustang 5.0 dry setup on a EFI engine. You can try 100 HP or even 150 if you got the *****. I never had any problems as long as I run premium fuel and retard the timing 2*. Make sure your fuel system is in tune also and thats its capable of supporting the demands.

 

Are you talking as far as NOS nitrous kits (Nitrous Oxide Systems)? If so, why not buy the kit that NOS recommends for a 2.8 f-body? What's special about using the 86-95 5.0 Mustang kit over the NOS-05120 kit (Summit part #)?

And I agree w/IROC57TPI, dry systems are the way to go for a port fuel injected car.

 

The NOS brand kit is exactly what I am talking about. The reason I recommend the Mustang kit is that it will work fine on our injection systems, and it costs about $475 dollars from Summit Racing. That is about $200 dollars cheaper than the kit for 2.8 and 3.1 liter V6 engines that I have seen. That is the whole reason I recommend the 'stang kit.

When I bought my kit back in 1996, there was no kit available for the V6 in an F-body. I talked with NOS tech guys, and they said that this system would work fine on my car, and for the last 7 years it has. I just don't see paying $200 dollars more for something just because it says it is specifically for my car, when it won't work any better.

You have to be careful about the kit you get. The NOS brand kit has a line and nozzle that you plumb in ahead of your throttle body. It is also a dry flow system, which is better for fuel injected cars in my opinion. Some of the kits have a plate that bolts behind the throttle body, and some are actually wet flow systems with the plate. If they have a plate system, it obviously won't bolt behind our throttle bodies and won't work. I know that the NOS system is what I have, it is adjustable, and it was for 86-95 Mustang 5.0s. I set it for 75 HP gain. They sell a non-adjustable kit that is pre-set for 75 HP for the mustang for the price listed above. The easiest thing would be to get that kit.

 

It would be interesting to compare both kits, parts for parts, and see what's different.