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post #16 of 31 (permalink) Old Jun 8th, 19, 1:53 PM
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Ron
 
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Re: How much nitrous?

Buddies 65 Stang runs 11.75 at 115 on motor and 10.91 at 125 on a 100 shot. So a 150 shot and getting a good hook should get you there no problem.
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post #17 of 31 (permalink) Old Jun 10th, 19, 5:44 PM Thread Starter
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George
 
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Re: How much nitrous?

Quote:
Originally Posted by rel3rd View Post
LOL, same here...
My engine was built, converter spec'd, and rear geared, specifically for the turbo that was on the car.

Takes off like a turd on motor... (1.79-1.81 usually)
Much better 1.49-1.52 on a 150 shot and the 1 second progressive.
I think some 275/60's (28" tall), instead of the 275/50 (26" tall) tires would allow a bigger and/or quicker hit, but then the car would be even slower N/A.

Don't write off the "bracket blip" until you've tried it.
I purposely run a full, quiet exhaust (w/a closed cut-out) so these regular weekly sandbaggers, who think I'm just another duck, can't even hear me do it. Since, running 12's means I am always the one chased, if they are good, they catch me at the 1100-1200 foot area, and brake, then I spray a quick 200 shot...

I always tried to just do my job, but since racing honest wasn't working, I tried being the game playing a-hole like 90% of the regulars that race in my class. Heck, they have a "Street Legal" class this Sunday, and I was specifically told by track owner that the class was designed for "stock appearing cars" with DOT tires, full exhaust, and tags...yet looking at the Points Standings yesterday, there's at least 3 or more "track regulars" that have obvious RACE cars, and fit absolutely none of the criteria...
There are for sure some very seasoned racers that know how to play the game. I know a few, but not good at that part of it. The close races are fun to me. Previously just raced in the street class. A few more “race” type cars would show up, but they didnt do very well. A few of the regulars in that class are pretty dang good. Luckily everyone is pretty cool. So its fun.

Im going to order that NX box you linked and put in the 150hp jets and see what happens. Should take some of the shock off things too.
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'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

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post #18 of 31 (permalink) Old Jun 10th, 19, 5:48 PM Thread Starter
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George
 
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Re: How much nitrous?

Quote:
Originally Posted by 68Chevele View Post
Last time I floor dynoed the car we had the NOS cheater system on it. Started out with 484hp 83 fuel jet and a 72 NOS jet. Torque was over 550, we dropped the fuel side 10 jet sizes as the thing was pig rich and the RWHP jumped to 525 and the torque was just over 685, we pulled 8° timing out also. Needless to say that when we tried it at the track the poor little 9" slicks did not work too well with that amount. I did not care about the numbers so much as the changes is what mean more. At that point I realized like a big dummy that all these systems the companies sell are just too rich but they have to cover their butts as lean is mean.
Thats similar to what mine made 462hp and 440 tq...we only spun it to 5200 I think. More just making sure it worked and the a/f ratios weren’t too bad...11.5-7 I think. Will have to see what the actual jets are, maybe I have them in backwards.

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
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post #19 of 31 (permalink) Old Jun 10th, 19, 5:49 PM Thread Starter
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George
 
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Re: How much nitrous?

Quote:
Originally Posted by dirtlips408 View Post
Buddies 65 Stang runs 11.75 at 115 on motor and 10.91 at 125 on a 100 shot. So a 150 shot and getting a good hook should get you there no problem.
I was thinking that 10.90’s would be an optimal run on that 100 shot. Sure hope so!
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'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
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post #20 of 31 (permalink) Old Jun 10th, 19, 7:11 PM
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Andy
 
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Re: How much nitrous?

George, if you can get an 11,0 out of it, a 150 shot should get you low low tens.

Me? I am a greedy man. My 78 Malibu was a bit of an over achiever and ran dead nuts 10.20s with a carbed LS1 402 stroker. A 200 shot got me 9.40s.

A 250 shot left most of of the right hand cylinder head out the exhaust. Only so much fuel a BG400 can flow. It still ran [email protected]

No guts, no glory.

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post #21 of 31 (permalink) Old Jun 12th, 19, 10:36 PM Thread Starter
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George
 
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Re: How much nitrous?

Quote:
Originally Posted by Andy's Auto Repair View Post
George, if you can get an 11,0 out of it, a 150 shot should get you low low tens.

Me? I am a greedy man. My 78 Malibu was a bit of an over achiever and ran dead nuts 10.20s with a carbed LS1 402 stroker. A 200 shot got me 9.40s.

A 250 shot left most of of the right hand cylinder head out the exhaust. Only so much fuel a BG400 can flow. It still ran [email protected]

No guts, no glory.
I don’t think I could get to 11.0 with what I have. With a better said of heads probably close, but Im in the middle of building a 6.0L. Hope that will get me close to the 11.0 on motor.

I got that NX box, gonna put it on and see what happens with the 150 shot.

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
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post #22 of 31 (permalink) Old Jun 22nd, 19, 9:19 AM Thread Starter
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George
 
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Re: How much nitrous?

Installed the NX box. Easy enough to do. Running 53n/47f jets in the plate. 5.5 fuel pressure. 900psi bottle pressure. A/f went from the previous 10.0 to 11.5. Set the box to 1.5sec and ran [email protected] Car went sideways when nitrous came in...pretty fun!

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
Geo71 is online now  
post #23 of 31 (permalink) Old Jun 22nd, 19, 12:57 PM
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Jason
 
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Re: How much nitrous?

Quote:
Originally Posted by Geo71 View Post
Installed the NX box. Easy enough to do. Running 53n/47f jets in the plate. 5.5 fuel pressure. 900psi bottle pressure. A/f went from the previous 10.0 to 11.5. Set the box to 1.5sec and ran [email protected] Car went sideways when nitrous came in...pretty fun!
George,

How did you have the progressive set-up?

Keep us posted on how it goes!

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post #24 of 31 (permalink) Old Jun 22nd, 19, 4:04 PM Thread Starter
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George
 
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Re: How much nitrous?

Quote:
Originally Posted by DragRacer View Post
George,

How did you have the progressive set-up?

Keep us posted on how it goes!
This one is really simple. Has a knob to set what amount of time the ramp is....the ramp always starts at 20%. Its the same one Bob mentioned earlier.

Track is much better today, but bracket racing so will try again next week with it.

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
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post #25 of 31 (permalink) Old Jun 22nd, 19, 5:08 PM
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Jarad
 
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Re: How much nitrous?

Good luck. Run some 10's next!

Sent from my SAMSUNG-SM-N920A using Tapatalk
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post #26 of 31 (permalink) Old Jun 23rd, 19, 11:54 PM Thread Starter
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George
 
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Re: How much nitrous?

Had a little incident at Saturday’s race....3rd time run it launched hard and came down alittle crooked, that probably did the initial cracking...three runs after that, not a great plan is what Im thinkin....
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'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
Geo71 is online now  
post #27 of 31 (permalink) Old Jun 24th, 19, 12:37 AM
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Vince
 
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Re: How much nitrous?

if thats all that broke - it was a good day.
don't want to get fluid under the tires while racing ...

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post #28 of 31 (permalink) Old Jun 24th, 19, 10:13 PM Thread Starter
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George
 
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Re: How much nitrous?

Quote:
Originally Posted by VinceS427bb View Post
if thats all that broke - it was a good day.
don't want to get fluid under the tires while racing ...
Yeah could be worse. Ordered an ultrabell today. Was gonna do it a few months ago... should have done it.

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
Geo71 is online now  
post #29 of 31 (permalink) Old Jun 26th, 19, 9:56 AM
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Re: How much nitrous?

Geo71. Nitrous is called laughing gas for a reason, it's funny how it reacts in some motors. I have seen a mustang 306 go from 12.70 to low 10's on a 200 plate. Or a mid 9 second nova run 8.90 on a 50 shot and turning it off during the run. Same guy then did a pump gas 478 that ran 9.0s. With a 175 shot delayed on the hit it would run 8.40s. Same car on a 350 hit would run 8.47s. Any hit over 175 car ran no better. So each motor can respond different due to you combo and stuff. I really think your doing this wrong and chasing your tail. Go back and tune the 100 hit with the progresser. I think there sound like you should gain 1 sec or even 1.1 seconds off you na times. Tune it to get the most in the fastest and then work with more jet after that. Quite blowing off the tires and your into the 10s with the 100 jets. My 88 mustang went from mid 13s to 11.70 with a 100 hit tune to the best we could. But we leaned the efi out a bit for 5 to 6100 in first and second gears so it was probably another 25 hp there.

RH
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post #30 of 31 (permalink) Old Jun 28th, 19, 2:08 PM
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Todd
 
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Re: How much nitrous?

Controller is the way to go. I run 6.20s on motor (1/8 mile) with a 1. 4something 60. 200 shot it goes 5.63 123 1.27 60, wheels way up on a 275 radial.

13.5-1 572, HP innovations 1150, 1.8 glide, 3.89 gear, Nitrous outlet stinger 2

Best 1/8 ET 5.65
Best 1/8 MPH 122
Best 60 1.28
8.93 147mph
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