# Bore vs. Stroke
**URL:** https://forums.speedlife.net/t/bore-vs-stroke/162471
**Category:** PittSpeed Off Topic
**Created:** [October 23, 2003, 7:33am UTC](https://forums.speedlife.net/t/bore-vs-stroke/162471 "2003-10-23T07:33:38Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@77rednecktruck](https://forums.speedlife.net/u/77rednecktruck)
#### Post date: [October 23, 2003, 7:33am UTC](https://forums.speedlife.net/t/bore-vs-stroke/162471/1 "2003-10-23T07:33:38Z")
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?
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### Author:  [@Turbocharged](https://forums.speedlife.net/u/Turbocharged)
#### Post date: [October 23, 2003, 9:22am UTC](https://forums.speedlife.net/t/bore-vs-stroke/162471/2 "2003-10-23T09:22:38Z")
longer stroke gives it more cubic inches
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### Author:  [@ohsoquik02](https://forums.speedlife.net/u/ohsoquik02)
#### Post date: [October 23, 2003, 10:12am UTC](https://forums.speedlife.net/t/bore-vs-stroke/162471/3 "2003-10-23T10:12:49Z")
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
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### Author:  [@77rednecktruck](https://forums.speedlife.net/u/77rednecktruck)
#### Post date: [October 23, 2003, 11:06am UTC](https://forums.speedlife.net/t/bore-vs-stroke/162471/4 "2003-10-23T11:06:18Z")
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 monsters**
>
>
>
> **so yes the longer stroke on the 5.4 does affect its torque output**
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### Author:  [@ohsoquik02](https://forums.speedlife.net/u/ohsoquik02)
#### Post date: [October 23, 2003, 12:16pm UTC](https://forums.speedlife.net/t/bore-vs-stroke/162471/5 "2003-10-23T12:16:33Z")
> _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
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### Author:  [@Hycomp](https://forums.speedlife.net/u/Hycomp)
#### Post date: [October 24, 2003, 7:57am UTC](https://forums.speedlife.net/t/bore-vs-stroke/162471/6 "2003-10-24T07:57:09Z")
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
😃
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### Author:  [@77rednecktruck](https://forums.speedlife.net/u/77rednecktruck)
#### Post date: [October 24, 2003, 8:03am UTC](https://forums.speedlife.net/t/bore-vs-stroke/162471/7 "2003-10-24T08:03:52Z")
Thanks
> _Originally posted by Hycomp_
> **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
>
> **😃**
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### Author:  [@ohsoquik02](https://forums.speedlife.net/u/ohsoquik02)
#### Post date: [October 24, 2003, 11:17am UTC](https://forums.speedlife.net/t/bore-vs-stroke/162471/8 "2003-10-24T11:17:24Z")
no problem
thats why were here
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### Author:  [@OLDS\_ROCKETMAN](https://forums.speedlife.net/u/OLDS_ROCKETMAN)
#### Post date: [October 24, 2003, 11:39am UTC](https://forums.speedlife.net/t/bore-vs-stroke/162471/9 "2003-10-24T11:39:58Z")
> _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.
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### Author:  [@ohsoquik02](https://forums.speedlife.net/u/ohsoquik02)
#### Post date: [October 24, 2003, 2:06pm UTC](https://forums.speedlife.net/t/bore-vs-stroke/162471/10 "2003-10-24T14:06:20Z")
> _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