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Cost to build a homebuilt 429

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Old 12-01-2004, 11:57 AM
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Phil97SVT
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Default Cost to build a homebuilt 429

Eagle Crank; $895
Darton Block $2600
Eagle Rods 6.125: $550
Pistons: $600
Rings: $174
Machinework: $300
~5k

Does this sound right?
Phil
Old 12-01-2004, 12:27 PM
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Jackal
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youre missing alot of things...

gaskets, bearings, bolts(mains, rods, heads, ect), im sure there is more...
Old 12-01-2004, 12:39 PM
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Mehfoud
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For that resleeved block, your also going to need a different coolant and special water pump...
Old 12-01-2004, 01:35 PM
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HIGHRPM
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Originally Posted by Jackal
youre missing alot of things......gaskets, bearings, bolts(mains, rods, heads, ect), im sure there is more...
If your going with a 4.125" bore, its a 427.6...you'll need a 4.132" bore for 429....not recommended with a Darton. Also, you can't use your existing heads on a 4.125" bore.... need Stage III. A bigger cam.... maybe a 246/252/112, and a 90mm intake, 1/7/8" headers and a larger radiator. By the time your done figure on $10K.... to add all the hardware + tuning to make 550+rwhp you'd be over $20K. You can do it without all this extra hardware, but you won't make the 550+rwhp that motor is capable of.

Last edited by HIGHRPM; 12-01-2004 at 01:51 PM.
Old 12-01-2004, 01:53 PM
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Phil97SVT
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Originally Posted by Jackal
youre missing alot of things...

gaskets, bearings, bolts(mains, rods, heads, ect), im sure there is more...
Cometic Gaskets are ~$100-120
I already have ARP studs for the top and bottom/rods come with ARP bolts
Old 12-01-2004, 01:56 PM
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drouns
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I say 408/414 is the way to go if you want out for 5K !

And then put what ever power adder you want on it and have no worries !
Old 12-01-2004, 02:20 PM
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Heretic
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Originally Posted by Mehfoud
For that resleeved block, your also going to need a different coolant and special water pump...

Do we know that for sure?

Also where is the Resleeved block for $2600 coming from? I'd pay the bucks for a big name like LPE if I was going to do it.
Old 12-01-2004, 02:29 PM
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drouns
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Originally Posted by Heretic
Do we know that for sure?

Also where is the Resleeved block for $2600 coming from? I'd pay the bucks for a big name like LPE if I was going to do it.

MTI does it for 2699
Old 12-01-2004, 02:46 PM
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MrEracer
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I have an LS2 block and I had the sleeves sonic tested. The sleeves average .105" thick and it is a siamese block. I plan to bore it .060" which leaves the sleeves .075 thick which is plenty in my experience. This coupled with a 4.125" stroke crank makes a 427 cid engine. I'm sure you know that the LS2 blocks are under $1K. This cuts about $1800 off the cost as compared with a Darton sleeved block. You will need to buy some additional LS2 parts (about $200 worth) but this is still a lot cheaper than the Darton and has the reliability of cast in place factory sleeves (which will not ever leak)... Just my .02 cents...
Shirl
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Old 12-01-2004, 03:07 PM
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drouns
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But then you can't use much of a power adder can you ?
Old 12-01-2004, 04:55 PM
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Phil97SVT
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From my current point to go to a 427-429(Some costs are reflection of selling current items)
Eagle Crank: $895
Darton Block $2100
Pistons: $200
Rings: $174
Machinework: $300-$500
AFR 225s: $800
Cometic gasket: $60
Bearings $200
$4929

I know the owner of the local machine shop and he has always hooked me up with some crazy prices on machine work. The assembly is free since I am going to do it myself. Sounds pretty crazy if you ask me...
Old 12-01-2004, 04:58 PM
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MrEracer
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Quote "But then you can't use much of a power adder can you ?"


Why not? The sleeves are backed up by a substantial amount of aluminum and they are siamesed cylinders. I may also use 'block rock' to stabilize the lower half of the cylinders. I don't use power adders as a road racer but I wouldn't have a problem with it on the 427 LS2...
Shirl
Old 12-01-2004, 05:39 PM
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drouns
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Let me know how it works out when built and HP #'s I'm very interested if I could spray 250-300 on top of that !
Old 12-01-2004, 11:08 PM
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leaftye
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Originally Posted by Phil97SVT
From my current point to go to a 427-429(Some costs are reflection of selling current items)
Eagle Crank: $895
Darton Block $2100
Pistons: $200
Rings: $174
Machinework: $300-$500
AFR 225s: $800
Cometic gasket: $60
Bearings $200
$4929

I know the owner of the local machine shop and he has always hooked me up with some crazy prices on machine work. The assembly is free since I am going to do it myself. Sounds pretty crazy if you ask me...
I didn't catch if you're reusing parts from your current engine. It'd be nice to have a complete engine to drop in quickly. With my luck, if I were planning to reuse parts, I'd bust them up trying to take them off. If you're not reusing parts, you'll need some other stuff too.

I'm guessing the price for those heads are for bare heads. If that's right, you'll need a cam and valvespring kit...that's another $700. You'll need rockers...$200 stock, $300 for Harland-sharp, $700 for the common kits (Comp Cams, Yella-Terra), and prolly $2000 for full out Jesels or similar quality kit.

Valve covers, timing cover, intake manifold, injectors, plugs, oil pump, oil pan, orl pressure sensor, electrical/fuel, throttle body, damper, tensioner....
Old 12-01-2004, 11:16 PM
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SilverBulletZ06
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Figure how much the longblock would cost and add about 3K, then about anothe 1K for problems, and another 500 for tuning etc.

Definitly cool if you can pull it off.
Old 12-02-2004, 12:12 AM
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HurricaneZ
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I wanna here more about this 427 .060 over LS2 idea, is that possible?
Old 12-02-2004, 12:21 AM
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Rollin Black
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Originally Posted by HurricaneZ
I wanna here more about this 427 .060 over LS2 idea, is that possible?

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Old 12-02-2004, 03:47 AM
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kumar75150
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Its also possible with the iron block also but most people dont do it.

Pretty much most things being equal, if you achieve 427 cubic inches by more bore and less stroke you will make a lot more power than if you achiever 427 cubic inches by more stroke and less bore and you are more likely to have problems with that setup.
Old 12-02-2004, 04:25 AM
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drouns
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Originally Posted by kumar75150
Its also possible with the iron block also but most people dont do it.

Pretty much most things being equal, if you achieve 427 cubic inches by more bore and less stroke you will make a lot more power than if you achiever 427 cubic inches by more stroke and less bore and you are more likely to have problems with that setup.


And correct me if I'm wrong Kumar. I'm sure I have read this before.

But aren't you are limited on the amout of Nitrous you can spray beacause of how far the piston drops out of the hole.
Old 12-02-2004, 07:45 AM
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Mehfoud
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Originally Posted by Heretic
Do we know that for sure?

Also where is the Resleeved block for $2600 coming from? I'd pay the bucks for a big name like LPE if I was going to do it.

They had a good thread on a related form a while ago that talked about the need for a different (Evans) waterpump and coolant.

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