Re: dyno results and car update

I do not know the % of loss but bottom line is not to get disappointed if the number is not as high as the next guy as there is no possible standard of measurement between dynos/atmospheric temps/engine performance on a given day etc...the real question is does the on street or on track performance satisfy you? At the track, if you win your race(s) the “dyno numbers” are pretty much irrelevant.

Many "numbers” are erroneous, misleading, and at best are a guideline – key word is guideline; another tool in your war chest of Mopar knowledge and experience. Rear end ratios and high stall convertors will also skew the numbers and prevent accurate readings or comparisons.

For example, my rear wheel dyno numbers on my 67 Dart w/mild transplanted 340 build (284 Cam, LD340 intake, 850cfm Thermoquad, stock pistons & valves, 1 5/8” Headers, 2.5” exh. pipe, head work...)

277 rear wheel HP

268 “ “ “

from all the “other guy’s” numbers I should be ashamed to drive down the street, much less hit the track. However, I turned 12.8 @106mph in the quarter mile (even let off the throttle prematurely on that run) and beat every car I raced that night (obviously all the paired cars were under 12.8...)

Gary Pavlovich

From: Dodger7998@xxxxxxx

Sent: Thursday, October 04, 2012 6:32 AM

To: 1962to1965mopars@xxxxxxxxxxxxxxxx

Subject: Re: dyno results and car update

Once apon a time I was told that the biggest loss was the rear differential, and that the 90 degree turn of the power was the culprit more so than the transmission

In a message dated 10/4/2012 12:21:35 A.M. Central Daylight Time, micher@xxxxxxxxxxxxxxx writes:

WoW! that nuch parasitic loss?? I wonder if some kind of friction
reduceing manual tranny (4 speed) lube and rear end lube would make
a noticable difference? .........................MO

On Oct 3, 10:50 pm, Richard Kinsley <leroar.kinsley...@xxxxxxxxx>
wrote:
> As an example of dyno numbers, back in '63 I had my '59 Ply Sport Fury 318
> power pack dyno tuned in Garden Grove, CA. The horsepower was about 112hp
> at 60mph in high gear with 2:94 rear and 14" tires. They didn't run it up
> like they do now and find the max. There is a percentage of power loss but
> it varies with the application. Some drive lines are more efficient than
> others. I think a 15% loss is fairly good.
>
> Rich Kinsley '64 Dodge Polara LeRoar 4dr 324 poly w/goodies
>
>
>
>
>
> On Wed, Oct 3, 2012 at 12:25 AM, MO <mic...@xxxxxxxxxxxxxxx> wrote:
> > I like your Plymy and what you are doing with it.
>
> > I am afraid to admit how old school I am, but how does dyno at the
> > rear wheels translate into numbers on an engine dtno? I know the rear
> > wheel dyno reads less but I am not familiar with the numbers you give
> > to know just what kind of power your engine has. ..................MO
>
> > On Oct 2, 2:26 pm, SL <slid...@xxxxxxxxx> wrote:
> > > I've finally had some time to work on the car in the last few weeks and
> > > drive it a bit before the snow falls here. Installing an MSD fixed the
> > > starting issues...bad coil or orange box was the culprit everything else
> > > checked out. The 440 six pack got some tuning on the dyno and she's
> > > running really good now. 355hp and 383tq with 38 degress of timing.
> > > Elevation here is ~3500'
>
> > > In addition to the planned alterktion install I'm starting to put
> > together
> > > my plans for the Megasquirt EFI. I may keep it a six pack by going with
> > > the following intake from F&B Throttle Bodies.
> >http://www.fbthrottlebodies.com/images/photos/440%206bblsys.gif
>
> > > Cheers,
> > > Stacy
>
> > > IMG_20120924_112031 (Large).jpg
> > > 103KViewDownload
>
> > > IMG_20120921_090422 (Large).jpg
> > > 141KViewDownload
>
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> --
> Rich Kinsley '64 Dodge Polara 4dr 318poly w/goodies- Hide quoted text -
>
> - Show quoted text -

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Please address private email -- email of interest to only one person -- directly to that person. That is, email your parts/car transactions and negotiations, as well as other personal messages, only to the intended recipient. Do not just press "reply" and send your email to everyone using the general '62-'65 Clubhouse public email address. This practice will protect your privacy, reduce the total volume of mail and fine-tune the content signal to Mopar topic. Thanks!

1962 to 1965 Mopar Clubhouse Discussion Guidelines:
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