Author Topic: Dyno tune results 1972 RB 413-1 Dodge  (Read 2909 times)

Offline JCMAC

  • 11 year member
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  • I own: a Motor Home
  • Year: 1972
  • Make: Winnebago
  • Model: Chieftain D22C
  • Chassis: Dodge M-400
  • Engine: RB413-1
Dyno tune results 1972 RB 413-1 Dodge
« on: March 14, 2014, 07:25 PM »

Offline DaveVA78Chieftain

  • 14 year member
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  • Year: 1978
  • Make: Winnebago
  • Model: Chieftain
  • Chassis: Dodge M400
  • Engine: 440-3
Re: Dyno tune results 1972 RB 413-1 Dodge
« Reply #1 on: March 14, 2014, 08:32 PM »
Interesting.  I take it the distributor was reworked as the stock settings are:

413-1
Ignition timing: 5 +- 2.5
Centrifugal: 12 to 14 @ 4000 Engine RPM
Vacuum: 8.5 to 11.5 @ 12" vacuum
Total maximum: 25.5 to 30
 
Dave

Offline JCMAC

  • 11 year member
  • *
  • Posts: 75
  • I own: a Motor Home
  • Year: 1972
  • Make: Winnebago
  • Model: Chieftain D22C
  • Chassis: Dodge M-400
  • Engine: RB413-1
Re: Dyno tune results 1972 RB 413-1 Dodge
« Reply #2 on: March 15, 2014, 03:45 PM »

Offline Rickf1985

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  • Year: 1989
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  • Model: Chieftain
  • Chassis: Chevy
  • Engine: 454
Re: Dyno tune results 1972 RB 413-1 Dodge
« Reply #3 on: March 15, 2014, 04:02 PM »
110 lbs. compression on a 413? Sounds kind of low, I would expect around 140. 48 degrees total is race territory! As long as it doesn't ping then go for it. I am thinking the low compression has something to do with the high advance. Is this am emissions motor? I am not up on the older dodge workhorse engines but I thought a 413 was pre-emissions meaning it would have higher compression ratio.

Rick

Offline JCMAC

  • 11 year member
  • *
  • Posts: 75
  • I own: a Motor Home
  • Year: 1972
  • Make: Winnebago
  • Model: Chieftain D22C
  • Chassis: Dodge M-400
  • Engine: RB413-1
Re: Dyno tune results 1972 RB 413-1 Dodge
« Reply #4 on: March 15, 2014, 04:15 PM »

Offline Rickf1985

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  • Posts: 5042
  • Member since: 2013
  • I own: a Motor Home
  • Year: 1989
  • Make: Winnebago
  • Model: Chieftain
  • Chassis: Chevy
  • Engine: 454
Re: Dyno tune results 1972 RB 413-1 Dodge
« Reply #5 on: March 15, 2014, 04:32 PM »
Vacuum advance is ported vacuum taken from the carb so it is higher. Your vacuum is never zero unless you are running a turbo or supercharger. As long as all the cylinders are within 10% of each other then you are fine. 19" of vacuum is outstanding. It is just that I don't ever remember seeing those combination of numbers before. The only thing that counts is how it runs. Let us know what you mileage is.

Offline DaveVA78Chieftain

  • 14 year member
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  • Model: Chieftain
  • Chassis: Dodge M400
  • Engine: 440-3
Re: Dyno tune results 1972 RB 413-1 Dodge
« Reply #6 on: March 15, 2014, 04:54 PM »

Offline rjsdotorg

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  • Posts: 1
  • Member since: 2018
  • I own: a Motor Home
  • Year: 1971
  • Make: Travco
  • Model: 270
  • Chassis: Dodge
  • Engine: 413-1
Re: Dyno tune results 1972 RB 413-1 Dodge
« Reply #7 on: January 23, 2019, 01:39 PM »



what happened to the earlier posts in this thread?
I don't see the dyno results referred to

odd that Google cache has it

https://webcache.googleusercontent.com/search?q=cache:YD2kVTaGOK4J:www.classicwinnebagos.com/forum/index.php%3Ftopic%3D9121.0+&cd=1&hl=en&ct=clnk&gl=us

 

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