Engine torque
After the engine in our '09 V10 6.8L F250 'sploded 3 days ago, we ended up with a new-to-us replacement '12 GMC 2500HD that we were able to find on very short notice. The V10 6.8L was rated 362HP w...
Forum Discussion
The horsepower versus torque thing is hard to wrap your head around sometimes. Mathematically HP = torque x rpm. More torque will let you accelerate faster and HP is what keeps you at a particular speed when you get to it.
But it's more complicated than that because of bore, stroke, rod length, displacement, power to weight ratie, HP/torque vs rpm, engine breathing capability at higher rpms, etc.
Formula 1 engines are interesting. Only 1.6 liter, 6 cylinders and short stroke but the engines scream up to 15K rpm making up to 950 HP. Until a few years ago, they had a 3.0 liter V10 producing up to 1,000 HP. That is crazy HP per liter! They only produce around 250 ft-lbs of torque and the HP comes from the rpm. Back in the 80s when they were permitted to run turbos, they had up to 1400 HP on only 1.4 liters. :E
Anyway, tomorrow I'm driving 5 hours to retrieve our TT (might make it a 10 hour return trip). The route includes BC's infamous Coquihalla hwy between Hope and Kamloops, which is a mountain pass over 100 miles and has one section up to 8.5% grade. Elev. is only about 4K feet unlike up in Banff/Jasper where it's about 6500 feet.
I will def. get to see how the 6.0 liter V8 does in comparison to the 6.8 liter V10! I do know so far that the V8 got way better gas mileage on the way home but had nothing being towed. It would be nice if we can do better than the 8 mpg or so the V10 F250 had when towing.
But it's more complicated than that because of bore, stroke, rod length, displacement, power to weight ratie, HP/torque vs rpm, engine breathing capability at higher rpms, etc.
Formula 1 engines are interesting. Only 1.6 liter, 6 cylinders and short stroke but the engines scream up to 15K rpm making up to 950 HP. Until a few years ago, they had a 3.0 liter V10 producing up to 1,000 HP. That is crazy HP per liter! They only produce around 250 ft-lbs of torque and the HP comes from the rpm. Back in the 80s when they were permitted to run turbos, they had up to 1400 HP on only 1.4 liters. :E
Anyway, tomorrow I'm driving 5 hours to retrieve our TT (might make it a 10 hour return trip). The route includes BC's infamous Coquihalla hwy between Hope and Kamloops, which is a mountain pass over 100 miles and has one section up to 8.5% grade. Elev. is only about 4K feet unlike up in Banff/Jasper where it's about 6500 feet.
I will def. get to see how the 6.0 liter V8 does in comparison to the 6.8 liter V10! I do know so far that the V8 got way better gas mileage on the way home but had nothing being towed. It would be nice if we can do better than the 8 mpg or so the V10 F250 had when towing.
