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427 engine value?

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Old Dec 30, 2006 | 07:39 PM
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Default 427 engine value?

I looked at a 1951 chevy truck today that supossedly has a 66 vette motor. I got some numbers of the block. Stamped upside down on pass side was 1215 or maybe I215, the pad the front had been milled but could n't really read what was there other than maybe some numbers and IP. The casting number by the bellhousing was 3869942. It has the high perf pass on the drivers rear. The guy said it had rectangular intake ports. I couldn't see any numbers on the heads. Cast Iron Manifold. It started and appeared to idle well. He said it was rebuilt 2 years ago and has about 20K on it. Judging by the grease and grime, I would guess it had been in there longer.

What would this motor be worth?
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Old Dec 30, 2006 | 07:49 PM
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Orginal 427 blocks alone are bringing big money and once you add in the cost of heads, crank, rods you can see where all this is going. To piece one together can run upwards of 5K easy. To clone one up using a 454 4-Bolt block can run just as much once you locate the correct oil pan, intake, valve covers, Carb or Carbs as the case my be.

I have built to correct in apperance 427's, one for my 66 and the other for my 69 and spent 5K - 8K.

Not sure what he's asking but if it's not much I say go for it. If you pass on this engine please pass along the contact to me if you would.

The IP sounds right, don't have my books with me right now. Unless you have the car to go with the front pad it really means nothing.

Hope this helps
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Old Dec 30, 2006 | 10:22 PM
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I do not know of any cast iron intake that has rectangle ports.

The block is from a 1966 model year. September 21, 1965

If it is an "IP" it should have rectangle port heads and 4 bolt mains.

Pull the valve covers and look for 3873858 with a casting before I 21 5. (Should be around "I" 12-14 range if original)

What was it bored to when rebuilt? (It can hurt the value if bored too much.)

Let me know if you need more info.
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Old Dec 30, 2006 | 10:52 PM
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Originally Posted by knight37128
Pull the valve covers and look for 3873858 with a casting before I 21 5. (Should be around "I" 12-14 range if original)
How can you say that without knowing when the engine was assembled?

There is absolutely no reason why the heads need to predate the block casting date. Both casting dates need to predate the engine assembly, but any of these parts could have been cast and sat around waiting for machining and assembly. It would not be uncommon to find a 425 hp car with block casting of I 25 5 to have heads from "J" and a final assembly of November.
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Old Dec 30, 2006 | 11:26 PM
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Originally Posted by Joel 67
How can you say that without knowing when the engine was assembled?

There is absolutely no reason why the heads need to predate the block casting date. Both casting dates need to predate the engine assembly, but any of these parts could have been cast and sat around waiting for machining and assembly. It would not be uncommon to find a 425 hp car with block casting of I 25 5 to have heads from "J" and a final assembly of November.
This was the first couple of months of production of these heads. How long do you think they sat around?
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Old Dec 31, 2006 | 12:15 AM
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No idea what it was bored to when supossedly rebuilt 2 years ago. The owner of the 51 truck is asking 8500 for the entire truck with 427,.. I like the truck but really am looking at the engine for my June built 1966 BB Corvette. I have requested a carfax on the truck and am waiting to talk to previous owners if possible.
I have asked another
Originally Posted by knight37128
I do not know of any cast iron intake that has rectangle ports.

The block is from a 1966 model year. September 21, 1965

If it is an "IP" it should have rectangle port heads and 4 bolt mains.

Pull the valve covers and look for 3873858 with a casting before I 21 5. (Should be around "I" 12-14 range if original)

What was it bored to when rebuilt? (It can hurt the value if bored too much.)

Let me know if you need more info.
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Old Dec 31, 2006 | 12:25 AM
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Originally Posted by corvette6672
... I have requested a carfax on the truck ...
I didn't think Carfax covered vehicles with VINs that don't follow the current (since 1981) standard for a 17 digit VIN
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Old Dec 31, 2006 | 10:23 AM
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if you like the truck,buy it.You can always put in a small block and sell the thing,recouping most of your money...and there are stil lots of old trucks and suburbans out there with big blocks that can be had for a song,if you want to keep the 427 . just change it.
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