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Re: Doms T rams carbs out of the box dyno'd [Re: Dragula] #2849684
11/21/20 06:55 PM
11/21/20 06:55 PM
Joined: Jan 2007
Posts: 8,043
Mt Morris Michigan
mopar dave Offline OP
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mopar dave  Offline OP
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Joined: Jan 2007
Posts: 8,043
Mt Morris Michigan
Well ya know i did get the data i wanted. I did not go to get hp numbers. I learned years ago those were not accurate at best. I went to get peak rpm numbers and a fuel curve. To me this was valuable info and well worth $150.

Re: Doms T rams carbs out of the box dyno'd [Re: mopar dave] #2849698
11/21/20 07:30 PM
11/21/20 07:30 PM
Joined: Nov 2013
Posts: 725
Southern Alberta
Uberpube Offline
super stock
Uberpube  Offline
super stock

Joined: Nov 2013
Posts: 725
Southern Alberta
I have a dynojet and can run a negative dyno test to get drivetrain losses in inertia mode., I am not sure how the mustang derives those numbers using a load cell.
I work on other types of machinery that uses the same strain gauges that a lot of load cell dyno's use, they need to be calibrated between 2 or more data points and on a regular basis.. I know some
other dyno's just have a zero'ing function but that doesn't mean anything. I have the load cell option on my dynojet, you zero it, and then put a fixed weight on a torque bar to see if the gauge is reading right.

Re: Doms T rams carbs out of the box dyno'd [Re: mopar dave] #2849709
11/21/20 07:57 PM
11/21/20 07:57 PM
Joined: May 2004
Posts: 12,418
Taxes & Virus's R-US, NY
Dragula Offline
I Live Here
Dragula  Offline
I Live Here

Joined: May 2004
Posts: 12,418
Taxes & Virus's R-US, NY
Originally Posted by mopar dave
Well ya know i did get the data i wanted. I did not go to get hp numbers. I learned years ago those were not accurate at best. I went to get peak rpm numbers and a fuel curve. To me this was valuable info and well worth $150.


That's not a bad price...Around here its $500 to get near one....

It does look like you got a chance to do some tunning....Get it to the track and take some jets!


'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk
Re: Doms T rams carbs out of the box dyno'd [Re: mopar dave] #2849729
11/21/20 08:36 PM
11/21/20 08:36 PM
Joined: Oct 2003
Posts: 11,686
W. Kentucky
justinp61 Offline
I Live Here
justinp61  Offline
I Live Here

Joined: Oct 2003
Posts: 11,686
W. Kentucky
Originally Posted by mopar dave
Well ya know i did get the data i wanted. I did not go to get hp numbers. I learned years ago those were not accurate at best. I went to get peak rpm numbers and a fuel curve. To me this was valuable info and well worth $150.


My takeaway from the chassis (and engine) dyno was the same as yours. It's a tool to see changes made in the tune, the numbers fall where they will.

Re: Doms T rams carbs out of the box dyno'd [Re: fast68plymouth] #2850097
11/22/20 07:05 PM
11/22/20 07:05 PM
Joined: Jan 2007
Posts: 8,043
Mt Morris Michigan
mopar dave Offline OP
master
mopar dave  Offline OP
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Joined: Jan 2007
Posts: 8,043
Mt Morris Michigan
Ok, so Dwayne, you know this sft cam. So what duration in a roller would pick my peak power and torque up 500 rpm if the cam was on a 108 lobe sep in this combo? I just need a rough idea. Thanks

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