alright I have an 86 camaro with a well built 355 I know it can handle at least a 150 shot but how should I go about doing it and setting it up. I am thinking about going with NX's kit since everyone on here seems to like them best but what I am confused about is my fuel system. I have a mechanical fuel pump on the engine block, I believe it is a holley but I forget, will I need to put in an inline pump and change to bigger fuel lines? or could I put a kit on now and just not run as big of a shot until I can upgrade the fuel system? Please feel free to tell me anything you think or tell me about your set up.

Thanks in advance

 

I wouldn't use a mechanical pump no matter what pressure it supports with nitrous. I bought the Holley Blue pump and ran bigger lines to the engine compartment. The thing I like about the blue pump is it comes with a pressure regulator. It's a good deal.

 

Never, ever use a block pump only with a nitrous kit, EE boom!

You need a good electric pump either in the gas tank (like a stock TBI pump) or one in line as close to the tank as possible. You will need a pressure regulator up by the motor. Block pumps give very little pressure and volume at low rpms regardless of it being a stock pump or some high-flow aftermarket job. Electric pumps always push the same amount of fuel regardless of engine rpm.

 

so could I just put in a stock TBI pump? and use that, or does someone make a high flow intank pump I could buy? If not yes to either of those could I just delete the block pump and put in an electric fuel pump? If yes to that would I have to run bigger fuel lines from the tank or would the stock ones be ok?

Sorry for all the questions, I am trying to get this all figured out so I dont do it the wrong way.

Thanks again

 

For simplicity I just used a pump that doesn't go inside the tank. The choice is up to you. I would definitely go with bigger fuel lines. I got the aluminum tubing from www.Jegs.com and borrowed a tubing bender from a guy at work. Not that hard to do. Takes a little patience though.

 

hey 94-6spd how did you go about running bigger lines to the tank? and where did you put the pump?

Thanks a lot

 

if you decide to go with a stock fuel pump do not get one from checker (CSK)/autozone/parts america unless you want your **** to fail and have to pull the tank out again. buy a $35 fuel pump and you get what you pay for.

 

Some people say that you should have seperate fuel system for your nitrous at what size shot is this a good idea to do?

 

My car is an 83 and it had 3 rubber hoses coming out of the tank. 1 fuel, 1 return, and 1 vent. I ran aluminum fuel tubing from the one fuel hose to the pump that is mounted outside the car but right behind where the back seats go. (Hard to explain) If I get time I'll send you a picture of it. I then ran the line from the pump all the way to the engine compartment where I have my pressure regulator mounted. I just capped off the return line. It is better to use a return line but I didn't.

 

It is recommended for over 150 hp shot but I've seen over 200 shots with one fuel pump. The pump must be able to flow enough for the nitrous and the engine. There is a formula for this but don't know where to find it.

 

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