Nitrous Oxide Installation | Tuning | Products
Sponsored by:
Sponsored by:

Recommended timing on a H/C+150 shot

Thread Tools
 
Search this Thread
 
Old Dec 18, 2012 | 07:32 AM
  #1  
PaSteLaSo4U's Avatar
Thread Starter
Launching!
iTrader: (-2)
 
Joined: Jan 2011
Posts: 214
Likes: 0
Default Recommended timing on a H/C+150 shot

Just had car dyno'd and it made 400whp/367tq with 26 deg and 12.8-12.9's Air Fuel N/A.
On a 150 shot sould I just go by the 2deg for every 50hp rule of thumb? So 20 deg? I think it was AtvRacer or Carter, that Recommended and had best track results with more timing pulled and leaner afr's [in the mid to high 12's] And there are others that say as much timing as 22-24 deg? i'm working some gremlins ATM, but i'm strapping her again on the dyno and re-tuning on Nitrous..
Reply
Old Dec 18, 2012 | 08:47 AM
  #2  
87silverbullet's Avatar
TECH Veteran
iTrader: (11)
 
Joined: Mar 2007
Posts: 4,873
Likes: 8
From: Slidell,LA
Default

Originally Posted by PaSteLaSo4U
Just had car dyno'd and it made 400whp/367tq with 26 deg and 12.8-12.9's Air Fuel N/A.
On a 150 shot sould I just go by the 2deg for every 50hp rule of thumb? So 20 deg? I think it was AtvRacer or Carter, that Recommended and had best track results with more timing pulled and leaner afr's [in the mid to high 12's] And there are others that say as much timing as 22-24 deg? i'm working some gremlins ATM, but i'm strapping her again on the dyno and re-tuning on Nitrous..
No tuning on the dyno........Get with ATV on the lean and low.
Reply
Old Dec 18, 2012 | 12:53 PM
  #3  
PaSteLaSo4U's Avatar
Thread Starter
Launching!
iTrader: (-2)
 
Joined: Jan 2011
Posts: 214
Likes: 0
Default

what's the reasoning behind not tuning on a dyno? Skew up inaccurate readings or just that pulling and ck'ng plugs is a better way?.
Hopefully ATVracer would chime in..
Reply
Old Dec 18, 2012 | 02:03 PM
  #4  
87silverbullet's Avatar
TECH Veteran
iTrader: (11)
 
Joined: Mar 2007
Posts: 4,873
Likes: 8
From: Slidell,LA
Default

With tuning on a dyno you can get away with more timing and sometimes you can't get enough heat in the cylinders. If you tune it like that on the dyno and then go to the track, kiss your engine goodbye.
Reply
Old Dec 18, 2012 | 03:40 PM
  #5  
Chris@NitroDaves
Guest
 
Posts: n/a
Default

From your 26° n/a tune you will probably want to take out at least 2-4°. There are a lot of vehicles on here hitting 150hp shots with newhere from 22-26° of timing in their tunes.
Reply
Old Dec 18, 2012 | 06:41 PM
  #6  
PaSteLaSo4U's Avatar
Thread Starter
Launching!
iTrader: (-2)
 
Joined: Jan 2011
Posts: 214
Likes: 0
Default

i was told 11.5-11.8 its safe for afr's on 93 pump gas, isnt that a little on the rich side?
Reply
Old Dec 18, 2012 | 07:12 PM
  #7  
PaSteLaSo4U's Avatar
Thread Starter
Launching!
iTrader: (-2)
 
Joined: Jan 2011
Posts: 214
Likes: 0
Default

thanks everyone for your help
Reply
Old Dec 19, 2012 | 02:19 PM
  #8  
Chris@NitroDaves
Guest
 
Posts: n/a
Default

We typically tune our cars and customers to around 11.8-11.9 on the AFR. 11.5 is still ok but anything lower than that is too rich IMO.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo




All times are GMT -5. The time now is 07:50 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE