Thinking about spraying my 455 Buick Gran National. I'm looking for a kit with 100 to 250 HP power gains. A lot of guys recommend the Edelbrock Controller, is the Edelbrock Performer RPM a good system to go along with the controller or do you guys recommend one of the other systems. I have a Holley Blue fuel pump. With a -8 line from pump to carb.Will I need to upgrade that as well? Thanks for any help.. <!-- / message -->
Don, are you asking about the NOS brand specifically, or about any nitrous oxide (N2O) injection system in general? Devon
After a good bit of research, we went with these guys. http://nitrousexpress.com/ You could ask them about the holley blue, we have one, but not using it on the nitrous car, using the aeromotive pump and regulator. Did not want to risk leaning out from lack of fuel. The system has been trouble free for us. Get a bottle heater and a purge system. Also recommend a window switch and rev limiter.
This engine has a Quick fuel 1050 cfm 4150 carb on it. I was asking which system ? With all the different ones out there. I just used the term NOS to generalize a system not the brand name. Sorry if I was misleading. Again Thanks for any help..
Contact Monty Smith at http://www.montesmithperformance.com/ he is not brand specfic, Ford,Buick,Chevy and etc. and he is thee best I know of! Plus he holds Nitrous tuning classes too. He loves all brands of nitrous too. Good luck.
I use the Nitrous Express system with the freeze free spray bars in the plate. I thought the Edelbrock was a good system, that would have been my next choice. I think Nitrous Express uses a perimeter spray bar system where the spray comes out all the way around the plate/spacer. This looked like a good system(I seen video and it looked mean). What ever system you use, just use only That systems components. Jets and bottles from other systems do not interchange. I tried a NOS system bottle with my set up and the bottle did not work with my system. The jets from the Edelbrock system did not look the same so I did not buy them. Just keep everything the same manufacture and you will be ok. When using the bottle heater do not rely on the thermostat, it may overheat the bottle and you will get that nice boom when the switch turns on. 950-1000 lbs seems to work best. With just a 75 shot on my 350 I went from 13.50 to 12.00 sec 1/4.@110. The 125 shot gave me a 11.81 spinning tires @114mph. Nitrous is fun.
I prefer NOS brand systems. They've been around the longest and have high quality components. I agree with the above post, do not mix brands in 1 system.
Here is what 90% of the nitrous users are using now SpeedTech Nitrous. But there is several out there and they all do the same thing, Throttle in a Bottle.:3gears: :3gears: :3gears: :3gears: :laugh:
Which intake are you using? The SP1 or 2 works best with the plate mounted side to side or system which angles the mixture at the ports. The SPX has a more typical layout and a standard NOS cheater system would be a great choice. When I had a nitrous plate on the SP1 I had 4 fogger nozzles in a plate. Two in the front and two in the back. Hit like a ton of bricks with 300 pills!:laugh:
This is what I used and hits hard, http://www.holley.com/types/EXTREME RACE Kits 250-500 HP.asp fore warn you, the shorter the nitrous and gas line from the solenoids the harder it hits. I love this kit because the power level difference's. But there use to be a kit made by Top Gun Nitrous that was called StarWars, It was a plate with a single spray bar straight through the center(front to back) and 4 fogger nozzles on one side and 4 on the other. It was suppose to be 100hp to 800+hp but no one could get it to hook on the second stage anything past 650hp. A friend of mine had it on a destroked 454 Chevy (440) with big cheif heads it ran consistint 9.30's on 250 first stage and 400 on the second stage, we are talkin about a slapper bar 1968 camaro with full exhaust. It all depends on what power level you want and ease of it. If you want easy and no guess work, ZEX Nitrous is the best, simple and no guess work, power from 125 to 200 hp, now you want to learn as you go call Monty right away and have him school you at once or you'll have melted parts that you don't want.
I am leaning toward the Nitrous Express kit. It goes from 100 to 300 horsepower.. I like the idea of no spray bar. It deliverys the mixture from the outside perimeter of the plate. I like the controller they offer and I really like the stand alone fuel tank, its a one gallon tank with a fuel pump and a regulator built in it, and it mounts in the battery tray. (my battery in is the trunk).. My engine has a T/A SP1 intake with a 1050 cfm 4150 base Quick fuel carb. Edelbrock Alumn. heads, ARP studs, (out of the box not ported). A T/A # TA290-08HL cam. T/A sportsman rods. Wisco forged 11.5 to 1 pistons. Stock crank with ARP studs. T/A headers. Turbo 400 with a 4500 stall PTC convertor. And a trans brake. 3.90 gears. The car runs 10.60's @ 125 shifting it at 5800 and crossing the finish line at 5900 RPM. My question now is with say a 200 shot pill in it how much faster should I expect to see the go. How high is the stock crank safely going to spin?? Even though the kit goes to 300 HP, I don't know if I would hit it that hard. Well very offen anyway...
I always got almost and some times more then a second off of N/A times. So you ran 10.60's exspect 9.70 to 9.50's, if you have the kit on a progressive control you can use all 300 because you are making it come on as you want, no all at once which is very hard on the crank.
Is your motor internal or external balance?I spun my ext balanced to 6600 through the traps with a 260 degree @ 50 cam.I will keep the rpms around 62-6300 now.So with your cam I think a gear change will be in order.How much of a gear drop will depend on how much spray you hit it with and the added hp most likely with increase your converter slip increasing the rpms. A taller tire will help but I have no idea how much room you have.Talking this over with a friend and a drop in gear can also increase in converter slip. Jamie
The critical thing to consider, especially when going over about 125HP, is distribution. You have to ensure that the same amount of nitrous and fuel is going to *each cylinder*. If you have an even mixture on seven cylinders but the eighth runs lean, just remember that one lean cylinder is enough to ruin your day! Most of the perimeter kits I've seen have poor distribution. My spraybars are machined directly into the manifold and I think that's the best way to go. If you are going to go with a removable system, pay a lot of attention to how the nitrous is sprayed into the manifold and whether it will give you even distribution. From a performance perspective, the other key thing is that you want nitrous to reach the cylinders as a liquid. You don't want to "fog" the intake and have the nitrous boil into a gas, your performance will suffer. You also don't want to run a system capable of 300Hp if you're only going to run 100HP- your velocity will be lower and you will get more boiling. And I would stay far away from any US-made pulsing system, the solenoids just aren't up to the task. If you want a progressive system, there is a kit from the UK that is worth considering, but it is big bucks. -BC
I have to disagree on the progressive systems here, I assume you never had Motech, BigStuff3,and others as a engine management system. I know of a guy rt in michigan, well several of them matter of fact, and 90% of the drag racers us this system successfully and running 1000+hp on nitrous in three kits and some have hit damn close to 2000hp in nitrous. Just ask, Mike Moran,Tony Christain, Pat Musi, Annette Summers, and I can go on and on, but I won't. Thats why I said go to http://www.montesmithperformance.com/ and ask him questions, he has set more records then anyone in here. Plus he has a class on nitrous tuning which several pro's have attended and learned more then they thought they knew and they been in the business for 20+yrs of nitrous. Now tell me if anyone can match that in here? Nope. You don't have to choose his kits at all, he will take you step by step on flow testing it and settin fuel pressure, and your ignition and carb too. Then it's up to you to figure out your tire spin that your gona receive.
