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Author Topic: Anyone spray there BBC in a fed?  (Read 5353 times)

Offline 1000hpJohn

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Anyone spray there BBC in a fed?
« on: February 06, 2017, 05:00:15 PM »
Hey all,
  Since I am a door slammer racer, and I spray nitrous, I set my engine up a certain way, to catch people at the other end, and it works pretty good.

So, that being said, does anyone here spray there engine on the launch?  My 3500# tug boat dead hooks, paddles the tires and off I go.   I am wondering if I will be able to do the same in a fed?

Thoughts and input anyone!!!!! :D
Thanks

John
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Offline wideopen231

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Re: Anyone spray there BBC in a fed?
« Reply #1 on: February 06, 2017, 06:08:51 PM »
I hope it works great since I have my deal setup for 300 shot.I am not planning on trying it till I have good baseline tuneup on it. I know Bill has nitrous on his SBC FED and seems to work fine when he needs it. Hopefully he will chime in and give better insight on subject.
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dreracecar

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Re: Anyone spray there BBC in a fed?
« Reply #2 on: February 06, 2017, 06:31:06 PM »
For racing in NHRA Heritage series, Nitrous is prohibited in all NE classes
Most of what you will see in the INDEX classes are
NE3 -- carburated   9.60 index
NE2-- Norm Asperated injection on alcohol    8.60 index
NE1-- Blown or injected on alcohol    7.60 index
7.0PRO -- Blown alcohol, injected nitro   7.0 index 
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Offline Paul New

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Re: Anyone spray there BBC in a fed?
« Reply #3 on: February 06, 2017, 07:10:18 PM »
Pretty sure Dave Koehler did with his car I know he sales a lot of Nitrous parts to go along with fuel injection
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Offline masracingtd1167

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Re: Anyone spray there BBC in a fed?
« Reply #4 on: February 07, 2017, 12:20:06 PM »
I would spray mine from start to finish with a 250 shot .At that time I was running 7.50s on motor.It ran a lot of 7.00s and a best of 6.94 with spray!
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Offline 1000hpJohn

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Re: Anyone spray there BBC in a fed?
« Reply #5 on: February 08, 2017, 09:18:13 AM »
Quote from: dreracecar on February 06, 2017, 06:31:06 PM
For racing in NHRA Heritage series, Nitrous is prohibited in all NE classes
Most of what you will see in the INDEX classes are
NE3 -- carburated   9.60 index
NE2-- Norm Asperated injection on alcohol    8.60 index
NE1-- Blown or injected on alcohol    7.60 index
7.0PRO -- Blown alcohol, injected nitro   7.0 index

So if I run race gas, run low 8's, high 7's, no nitrous, I can't run in this series....hhhmmmm great...
Hope the ADRL has a class for me!!!!  If not, I will just run bracket races...

In this heritage series, IF I run 7.60 on gas, n/a, no nitrous could I run in the 7.60 class?
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dreracecar

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Re: Anyone spray there BBC in a fed?
« Reply #6 on: February 08, 2017, 11:29:51 AM »
Yes, if you can make 800+hp with your combo, you can be competitive in 7.60 which is around 175mph with a 'glide.  What I have listed is the norm's of what people run for the particular class, If you follow the rules that are listed on the NHRA heritage site and do it with what you have to run, then go for it. Most of these racers (at least here on the west coast) run right on the number, High 7's will not cut it in the 7.60 class. low 8's and you will have to tune it down to run 8.60's
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Offline masracingtd1167

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Re: Anyone spray there BBC in a fed?
« Reply #7 on: February 08, 2017, 12:03:50 PM »
NDRL runs pretty much the same classes as the Heritage series and I believe that no nitrous is allowed in there classes as well .I started to spray mine when I was running Top Dragster at the Divisional races where it is allowed !
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Offline wideopen231

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Re: Anyone spray there BBC in a fed?
« Reply #8 on: February 08, 2017, 03:02:45 PM »
If you are running engine combo simular to what you have in door car and the numbers in you signature are with it you should have no problem with a fed running 7.60's. FED will be ton lighter will maybe not the whole ton.Like bill said if you can make 850 hp you should be fine.
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Offline 1000hpJohn

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Re: Anyone spray there BBC in a fed?
« Reply #9 on: February 08, 2017, 03:45:48 PM »
Slowing down the et is very doable, but stepping up without my juice!!! Not so easy :-\
My last combo made 830 at the crank and with the new block and newer build, this engine should be closer to 875ish or higher...

I calculated my starting line ratio while building my Elky, and I see a lot of 4:10, 4:33 ratios and some with 1:76 and 1:80 glide gear sets.  Anyone experience issues with a 1:80 straight cut set and if you did what tire size and size of a convertor size and stall?????  I would launch at 4800 and climb the ring gear right away and ride the bar about 80 feet out, now with a digger, I'm sure a convertor is needed, not sure about trans ratio and tire size yet.  How much tire does a 850hp BBC need to run 4's in the qtr???   Aaahahaaaaa yeah right, 4's  ;D ;D ;D.  How about 7's 8)?    Could you imagine the look on my crew chiefs face after I tossed 200 at it and ran 6's ;).  Guess I better look into a 6 sec. chassis cert huh? Lol

The thing with my Elky is, 8.70 is all I had time for to tune!!!!  I had just figured out what the chassis wanted with the I/C and actually needed to calm it down a bit so 8.60's were right there...had I tossed another 50 at it, 8.50's may have shown up on the slip!!! Or not, needed more time...
My combo was or should i say, should have been making 1030hp to get 3525 lbs down range.  I ran a 4:33 gear and it trapped at 155 but I needed to launch higher and shift higher.  Crossed at 73-7400 and it was an 8000 rpm engine...

We shall see as this all plays out...my wife says she sees me in a digger and I say what color??? Lol. May have to convert the Elky to a street car!!! 8)

Thanks for your info guys.

John
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