NOS with carbs

Discussion in 'Fox 5.0 Mustang Tech' started by Wedge, Dec 10, 2003.


  1. Wedge

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    Carbs with a dual plane set up like the RPM performer. Are u guys having any issues using plate type Nitrous systems with the dual plane intakes? I know u cant spray 400 into her but say 150 just wondering about Cylenders 2 and 7 and poss running lean. Has anyone been very happy with there set up as far as maint goes. Finally what size fuel line are u using. I have the Moroso hard line I think its about 1/2 inch or 3/8. My motor make 300 at the wheels and with this and the addition of a 150 hit I think it should still be enough line to keep the fuel flowing with a BG280 pump. If I need bigger line let me know. I have to change something every year just to have something diff and I cant do anything like a short blk because im building a house so big car bills are a nono this year. If I break her shes going to sit but she is done correctly so she will hopefully stay together. Has stk short blk with Ford forged pistons,B-cam,Edelbrock RPM heads and intake out of the box and a 650 carb with 1 5/8 long tube header. Sits in front of a Tremec and aluminum Flywheel and a clutch masters clutch. has 4.10 gears with 27 inch Hoosier Quik Pro. Rearend is all braced with tubes also being welded and has a 8 point cage with 2 pipes going to Sub Frame. Runs consistent 12.1 at 110.00 on motor. Thanks 4 any help.
     
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  2. Wedge

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    Any help from the carb guys. Show me some love haha. :shrug:
     
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  3. matm347

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    Your setup will handle a 150 shot fine as long as you tune in correctly.
    The two carb guys I know that run at least 150 shot, leave their timing alone, and only change the plugs to two heat ranges cooler. The 302 based setup(somewhat similar to yours in a LIGHT car) went 11.5 on motor, and 10.1 with 150 shot.

    I strongly suggest a fuel pressure cutoff switch, so just in case you dont have enough fuel pressure, the nitrous will be cut off.
     
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  4. davs5.0

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    My buddy has run several setups like that on his 79 TA. The trick to making them live is to watch your timing, colder plugs and good fuel. I believe he knocked 4-6 degrees of timing out of it and adjusted after each run and a plug check. 2 ranges colder plug and some 110 octane just to be sure.
     
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  5. mattred90gt

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    im doing a Bigshot plate system,, and i was just gonna run colder plugs and leave the timing where it is and see how that works for me
     
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  6. SCcopcar

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    I used to burn up the 4 and 8 sparkplugs with a similar setup. Read all of the plugs each time until you get it tuned right. You probably should take out some timing even with colder plugs.
     
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  7. davs5.0

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    If you check out the article in this months MM&FF, they were putting a nos kit on a small block. And they had quite a few tricks to tuning the system. The biggest surprise I read was how much timing they pulled out of the car. Check it out if you have a copy.
     
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  8. PURESTREET5006

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    I wouldn't even consider using "spray" with a dual plane intake even with a small shot...I would always use some sort of open plenum intake.
     
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