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So for the 700 engine it is 48.3 x 5252 / what ever RPM you are at so if you are at 1000 RPM the torque value is 253 ft/lbs of torque

All you need to know is the RPM's of the engine

Every engine out there if you look at a chart Hp vs torque they equal out at 5252 RPM's

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The Spicer Horsepower and Torque Calculator will quickly calculate approximate horsepower or torque, depending on your selections.

spicerparts.com

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Exactly. That equation JimP posted is accurate and notice that for the Ford 5.0, the torque rating given over the years is published at different RPMs for peak torque. Those are also flywheel rated which will be the same for the Yamaha engines since the HP number given will also be at the flywheel.So my 5.0 making 380 ft lbs in my truck only makes 127 ft lbs more torque than my kodiak ?

I found this calculator that makes a bit more sense. I put in my numbers for my truck and my 5.0 makes 360 hp at 5500 rpm and 343.8 torque at that rpm . The thing one needs to know is what’s the hp of a kodiak 700 engine at 1000,1500,2000 etc rpm to calculate the torque out put. The max torque output will always come in lower in the rpm. I did 48 hp at 6500 rpm and got 38.8 point ft of torque and that sounds right.## Spicer Horsepower and Torque Calculator

The Spicer Horsepower and Torque Calculator will quickly calculate approximate horsepower or torque, depending on your selections.spicerparts.com

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Interesting...I used your link to the calculator and put in 5000rpm and it came out at 50.7 ft/lb of torque...It is fun to play with the numbers and see the results.

I found this calculator that makes a bit more sense. I put in my numbers for my truck and my 5.0 makes 360 hp at 5500 rpm and 343.8 torque at that rpm . The thing one needs to know is what’s the hp of a kodiak 700 engine at 1000,1500,2000 etc rpm to calculate the torque out put. The max torque output will always come in lower in the rpm. I did 48 hp at 6500 rpm and got 38.8 pound ft of torque and that sounds right.## Spicer Horsepower and Torque Calculator

The Spicer Horsepower and Torque Calculator will quickly calculate approximate horsepower or torque, depending on your selections.spicerparts.com

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Your not using the calculation properly..

torque = Hp x 5252 / RPM

So for the 700 engine it is 48.3 x 5252 / what ever RPM you are at so if you are at 1000 RPM the torque value is 253 ft/lbs of torque

All you need to know is the RPM's of the engine

Every engine out there if you look at a chart Hp vs torque they equal out at 5252 RPM's

"IF" peak hp of 48.3 hp was at 6500 rpms

48.3 x 5252 / 6500 rpms

= 39 ft lbs of torque

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Yes but you don't make 48 hp at a 1000 RPM.... So this calculation if completely point less.I agree but I just stuck the rpm figure in for a example, not saying that was the actual toque number at that time. As you say it is dependent on the actual horsepower at the RPM's.

We don't know the actual peak hp rpms but I would bet it's between 6400 - 6700 rpms.

Even the 48 hp is suspect because that is quite likely at the flywheel and you would loose quite a bit through the transmission, belt, and the rear end.

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That's already been done by Eric at EHS tuning. The 2016 to 2020 Grizzlys dyno at around 33 hp at the rear wheels in stock form

Even the 48 hp is suspect because that is quite likely at the flywheel and you would loose quite a bit through the transmission, belt, and the rear end.

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