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07-22-2013, 05:43 PM | #1 |
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Location: Tulsa, Oklahoma
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Speed, engines, torque to ground
Attached is the spreadsheet which I have been emailing to anyone who needs information about gearing, transmissions, rearends, and tire diameters.
I initially developed a simalar chart when I was a Salesmen for Freightliner. Engines were changing, new transmissions were being introduced, tires sizes were getting smaller to allow more height, and on top of that the speed limits were also changing. I had previously been a sale engineer for Tulsa Winch and sold mechanical power transmission equipment. We had to help our customers figure out how to gear our products to have enough torque within a usable range of speeds (chain and sprocket via a Pto on a truck) Using the same formulas and backing into some other numbers I built a book which showed all the different engines, transmissions, rear ends, and tire diameters that were used at that time and then put that information into a spreadsheet that show usable torque to the ground at different rpms (100 rpm increments) I attempted to do the same thing with our trucks and the engines that we see being used most often. I use this sheet to look up a combination of engine, trans, R/A ratio, and tire diameter that I know how it performs. i.e. my 66 GMC has a Throttle Body Injected 350 with a 700r4, 3:73 rears, and 31" rear tire diameter. The truck works great in 1, 2, 3rd and in 4th cruised down the highway at 66mph at 2000 rpm, it is not a race truck but it does very well and I am happy with it. this combo has 442ft lbs of torque to the ground in OD........so we use that as a benchmark and also as the bottom of the torque to the ground number to make sure the trucks can pull themselves down the road. Look at how much torque your truck had with the original engine and then compare that to how much it has with the new engine/trans/ etc that you want to put in the truck. This will give you a quantifiable number to compare to before you set your truck up. Good luck with your build .......Kieth Tulsa, Ok send me a pm if you want to talk about this in more detai and I will send you my phone number....ps I do not sell anything...... Well it did not work, will try again tomorrow.......Kieth |
07-22-2013, 05:53 PM | #2 |
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Re: Speed, engines, torque to ground
Such a tease...
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07-22-2013, 09:46 PM | #3 |
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Re: Speed, engines, torque to ground
So I added 123cu" (406) more than doubled HP and 3x torque with a 28" tire 1/2" shorter than stock
Dropped in 5 speed gained od and lost 20+lb lighter wheels and tires. Also threw more money at it than original sticker. What chart tells me that if I have 100x the money invested that it not more powerful than stock? Seems my Cummins at 610 Ft lb cost 20k and the 2014 at 850 cost 60k. Posted via Mobile Device
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07-23-2013, 11:53 AM | #4 |
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Re: Speed, engines, torque to ground
Hey Keith, been awhile, but wheres the link to input the info or is it emailed to you?
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07-23-2013, 01:31 PM | #5 |
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Re: Speed, engines, torque to ground
sorry about that, cannot get it to load----
pm me on this board and give me your e mail address and i will send it to you. Kieth |
07-23-2013, 04:36 PM | #6 |
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Re: Speed, engines, torque to ground
ok, thanks Keith.
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1963 Short bed step side SBW 427 big block and borg warner T-16 HD 3 speed manual http://67-72chevytrucks.com/vboard/s...d.php?t=519869 1963 Short bed fleetside BBW 348 1st gen big block w/Powerglide http://67-72chevytrucks.com/vboard/s...d.php?t=619024 1964 Short bed trailer |
07-23-2013, 04:46 PM | #7 | |
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Re: Speed, engines, torque to ground
Quote:
oh well the file is too large to load.....almost got there. Kieth |
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07-24-2013, 12:05 AM | #8 |
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Re: Speed, engines, torque to ground
I think we got the torque fiqured out...
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07-24-2013, 09:32 AM | #9 |
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Re: Speed, engines, torque to ground
Is that your Rich, that is insane.
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07-24-2013, 10:27 AM | #10 |
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Re: Speed, engines, torque to ground
No, I wish, mine is a dailey driver, thats just one of those pics you save, it came from the yellow bullet racing site. It is insane as you said..!
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07-25-2013, 12:42 AM | #11 |
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Re: Speed, engines, torque to ground
I think I like Rich's spreadsheet the best so far!
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07-25-2013, 09:20 AM | #12 | |
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Re: Speed, engines, torque to ground
Quote:
ESPECIALLY SINCE I HAVE NOT POSTED THE SPREADSHEET YET.....IT DOES GIVE VISUAL AID TO THE CONCEPT OF TORQUE........HA HA.... WELL IT SEEMS WE HAVE RUN INTO THE FILE SIZE PROBLEM THAT HAS BECOME A ISSUE BECAUSE WE ARE CHANGING OVER TO A NEW FILE SERVER. IT REALLY WILL BE BETTER TO HAVE THIS INFORMATION IN ONE PLACE SO I THINK WE WILL WAIT UNTIL THE CHANGEOVER IS MADE AND TRY TO POST IT AFTER THAT......... |
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07-25-2013, 11:36 AM | #13 | |
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Re: Speed, engines, torque to ground
Quote:
if at first you don't succeed BLAH BLAH BLAH...... TORQUETOGROUND_Excel_Workbookasapdf.pdf WELL HERE IS THE FILE, NOW ADOBE WILL NOT OPEN IT??? WHAT DO WE DO NOW ? WHEN I OPEN IT WITH ADOBE ACROBAT I ONLY GET THE FIRST PAGE, NOT THE OTHER INFORMATION. ANY ADMINISTRATION HELP HERE ? Last edited by kieth; 07-25-2013 at 11:46 AM. |
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07-25-2013, 10:02 PM | #14 |
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Re: Speed, engines, torque to ground
I`ve used this one in the past....works great..
http://johnmaherracing.com/calculato...io-calculator/
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