building my first 440, what kind of power???

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Old Apr 8, 2013 | 08:28 AM
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mebebob's Avatar
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building my first 440, what kind of power???

1974 440.C.I.D.
Lower end. KB 237 pistons .040 over, fully balanced, stock rods and stock crank. just turned.
902 heads 88cc's Motor should be right around 9.7 :1 compression ratio.
Full valve job of heads.
stock rockers and stock valves.

camshaft Comp kit K21-221-4 kit from summit racing.
lift .447int. and .455 exh.\
lobe separation 110
duration @50 212int. 218exh.

Aluminum intake
mopar performance ignition



What kind of hp and tq numbers can I expect from this build.
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Old Apr 8, 2013 | 02:26 PM
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Anyone know what kind of horse power and torque this motor build should make!!
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Old Apr 8, 2013 | 02:42 PM
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My guess is 350 to 380 hp.
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Old Apr 11, 2013 | 02:20 PM
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Anyone one else have an idea of what sort of power this motor will make...
Thanks
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Old Apr 13, 2013 | 09:05 AM
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yea, 360-390 range is a pretty safe assumption.
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Old Apr 13, 2013 | 07:30 PM
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Smile

Originally Posted by moparted
but a motor in another post with stock pistons has 400?
Yep
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Old Apr 15, 2013 | 09:52 AM
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there are so many factors, such as head work, cam choice, compression, etc. I don't know what the other engine had as far as tricks, but a 440 running 11:1 compression, all other components relatively equal, is going to put out a gob more power than one running 9.7:1. just for instance.
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Old Apr 16, 2013 | 12:08 PM
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1) That's a small cam.
2) It's all in the heads.
3) Bottom end is probably fine, but pop-top pistons would increase your compression.

You could easily push that to 500 hp, depends on what you want to do with it- street, strip, street/strip, pump gas etc.
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