Does length of stroke directly affect torque output?
The 4.6 liter Ford motor and the 5.4 have everything the same(basically), but the 5.4 gets longer stroke and it makes a lot more torque. But is the torque made through longer stroke or just more cubic inches?
longer stroke gives it more cubic inches
jsut think about it [not being a dick]
ppl stroke motors why? for more cube’s and when you stroke you get more
torque out of it. thus far strokers are know to be torque monsters
so yes the longer stroke on the 5.4 does affect its torque output
Someone on another message board compared the longer stroke with using a bigger breaker bar for more torque. I thought it was the cubic inches that made the torque. He said if you up the stroke and lower the bore to keep the cubic inches the same, the motor with the longer stroke would make more torque. I don’t really know the answer.
Originally posted by ohsoquik02
jsut think about it [not being a dick]
ppl stroke motors why? for more cube’s and when you stroke you get more
torque out of it. thus far strokers are know to be torque monstersso yes the longer stroke on the 5.4 does affect its torque output
Originally posted by 2kaltima
Someone on another message board compared the longer stroke with using a bigger breaker bar for more torque. I thought it was the cubic inches that made the torque. He said if you up the stroke and lower the bore to keep the cubic inches the same, the motor with the longer stroke would make more torque. I don’t really know the answer.
your on the right track. just think about it the older big blocks suck at horsepower
but have globs of torque. small blocks have hp but not that much torque
inline 4s make some hp[stock]but hardly any torque. thus having to dump the
clutch very high to get off the line.[no phun intended against inline 4s]
but can destroke a motor to get higher hp but torque lacks
Mathematically Torque=Force x Distance
Increasing a cranks stroke increases the distance thus increasing torque
In a cylinder Force = Cylinder Pressure x Cylinder Area (Bore)
Increasing Bore increases Force which increases Torque
Thanks
Originally posted by Hycomp
Mathematically Torque=Force x DistanceIncreasing a cranks stroke increases the distance thus increasing torque
In a cylinder Force = Cylinder Pressure x Cylinder Area (Bore)
Increasing Bore increases Force which increases Torque
no problem
thats why were here
Originally posted by ohsoquik02
just think about it the older big blocks suck at horsepower
i wouldn’t nessesarily agree with that. i’m not starved for HP. I do know all about the tourque of a big block thou. my car has to be close to 530 ft lbs. I think my run at keystone was evident of my tourque, 13.80 @ only 97 mph. Launched like a beast but the HEI gave out at the top end. So that being that case even thou say a BB is putting out about 1 hp per cubic inch(stock) there’s something to be said for tourque, especially at the track… SB generally have to wind up to develope the same HP as a BB, and thats hard on parts. I would take a BB over an SB anyday.
Originally posted by Cutty
i wouldn’t nessesarily agree with that. i’m not starved for HP. I do know all about the tourque of a big block thou. my car has to be close to 530 ft lbs. I think my run at keystone was evident of my tourque, 13.80 @ only 97 mph. Launched like a beast but the HEI gave out at the top end. So that being that case even thou say a BB is putting out about 1 hp per cubic inch(stock) there’s something to be said for tourque, especially at the track… SB generally have to wind up to develope the same HP as a BB, and thats hard on parts. I would take a BB over an SB anyday.
im not all big blocks but the ones int the mid to late 70s suck the one ihave
only has around 200 hp if that but the torque is around high 300s or even low
400s