440 engines.. how much power..?

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Old 01-16-2009 | 02:15 PM
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you can get lots of power from it
what kind of power are you looking for?
Old 01-16-2009 | 02:23 PM
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I'd like to be stuck with two 440's. You can make all the power you want with a 440, from mild to wild it all boils down to money, more money, more power.
Old 01-16-2009 | 02:28 PM
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Is it going to be street/strip or a daily driver car. 750 HP sounds like race only. Big bucks.
Old 01-16-2009 | 05:00 PM
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Joe, i do not recommend going over .020 bore on any 400/400 from 76/78 as they are thin walled and if you go and put alot of money in them you would be wasting your time ... you can even check with dodge and they will tell you the same thing and as far as 750hp you would have to do alot of change out on that motor and like i said with thin walls to start out with that wont leave you much error to go with in case something did happen and the way money is now id just put a good carb and cam and a few other goodies and let the demons out that way and get you a pre 76 440 to make into a screamer if your looking to go that way but this is all my 2cents and i like to spend my money wisely
Old 01-16-2009 | 05:02 PM
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i meant 400/440 sorry
Old 01-16-2009 | 06:20 PM
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Joe if you are looking for power for strip with 750 + hp i do not recommend using a 76/78 motor / allthough you can do it but you will not be able to redo if something should happen, im not saying you cant get it but i would never bore over .020 on them motors, i can look into it to see just what the wall specks are if you would like but im away from my sources at the moment and should be able to do so in a few days if you would like but the choice is yours and if it were me i would get a 76 pre motor and build it the way i wanted to to save money in the long run but hey its your money right but do consider if you do go wayout on it you will have to beef up the cooling system and a lot more as yes i have been there and done that sort of speak hehehe any way like i said they are great motors and you will get the power you want but to save money in the long run go pre 76
Old 01-16-2009 | 06:48 PM
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hey joe the 440 source kit , can i ask you how much they want for it ? and if its a tru kit does it come with cam, heads, pistons, and all the other stuff you are going to need for 700+ hp as just changing out the pistons and rods is not going to make you that much power and if it did they would be making a killing on that but if you do plan on running 750 and even as less as 650 you will not be able to use it as a daily driver if set up for strip ...... can i ask if you plan on strip or street or both ?
Old 01-16-2009 | 07:54 PM
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The walls are pretty think on the 77 block I am using, I had it bored .30 over and could have gone much further. One thing I like to look at is that by the end of the 440 they had worked out a lot of the problems like the ears breaking and some other issues that existed with the earlier engines.

However the only stock stuff from the 77 engine is the block, oil pan, timing cover, and brackets/ accessories on the front.

I did however buy earlier parts such as the steel crank, and balancer.

Last edited by Commando; 01-16-2009 at 07:57 PM.
Old 01-17-2009 | 05:34 AM
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Ya I agree, first things first, check what you have, get the block or blocks magna-fluxed or sonic checked for cracks etc, measure the bore to check for previous boring and go from there, Id be happy with 500 hp and a strong set up that I could give a 100 shot of NOS to when I wanted to play and still have a very dependable/ streetable car. Let us know, we are here to help.
Old 01-17-2009 | 11:11 AM
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Just be careful $300 to me seems cheap.



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