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Desert Shield/Storm Vet
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Discussion Starter · #1 ·
Okay all you diesel guru's this is my question of the day! I have heard this more then once and Im trying to wrap my little brain around the answer:) Why is it that a dyno number isn't as good as going to the track. Seems the answer has been because of the varibles of the dyno and atmospheric conditions etc. In my mind the dyno would be the best place because any joe shmoe can run on a dyno! Even I can't screw that up, but running down the track I could have a 1,000 hp truck and run times that everyone would say your full of BS your only running 400 hp! Do you all smell what Im stepping in or am I way off target here. Seems to me that you would have to know what the hell your doing at the track to show your hp and on a dyno you could be chuck full of Natty and your going to get darn close to what your actual numbers are. Please enlighten this poor soul:lol:
 

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Premium Member
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Good question... I suppose it all depends on what you're in to. Truth be told I'm not much in to drag racing, but its fun to throw the truck on the dyno once in a while and see what she's making. I'm much more in to sled pulling where its not always about HP (although big HP does help!) BTW, every dyno I've seen the operator runs your truck for you. You're not even allowed to do it yourself...
 

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Desert Shield/Storm Vet
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9,092 Posts
Discussion Starter · #3 · (Edited)
Good question... I suppose it all depends on what you're in to. Truth be told I'm not much in to drag racing, but its fun to throw the truck on the dyno once in a while and see what she's making. I'm much more in to sled pulling where its not always about HP (although big HP does help!) BTW, every dyno I've seen the operator runs your truck for you. You're not even allowed to do it yourself...
See I didn't know the operator of the dyno ran the truck! Learn somthing new everyday. I guess my point is when someone starts calling another member out about their hp claims and track times wouldn't the dyno sheet be a better indicator of your hp claims? Seems to me there is too many variables at the track with reaction times whether your got good traction what track your running at conditions at the track is it windy is it wet etc. and if you just can plain drive your truck at the track.
 

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Ok I get to speak on this subject, since I do spend a good bit of time on the dyno, afterall The Granny IS the Dyno Queen. There are variables to dyno numbers just as there are to track times. I am sure Abobb will explain this further for us. He has a very good explaination. Most dyno owners do not allow the truck owners to operate the truck themselves. However, some of them do, as was the case at SSS and if you do not know what you are doing it can affect what your values will be to some extent. There dyno operator must also be able to know the difference between true readings and "shift spikes". The dyno's must also be calibrated correctly. I know some folks believe in track numbers over dyno numbers. I know from personal experience that my truck has been consistent as far as horsepower regardless of who's dyno it was on. I am a huge fan of David Dunbar and his dyno. I just believe he runs a 1st class operation. He always runs the vehicles himself.
You gotta have the horsepower to get it down the track, but horsepower does not always relate to good times, as in my case. Traction issues! So again, there are variables involved in both. I know this most likely didn't make any sense but it is a personal choice as to which one you prefer and why. I am sure there will be others who will chime in with their opinions. I look forward to hearing all sides. Sorry if I rambled.
 
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