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Author Topic: Anyone know what a factory 427 goes for nowadays?  (Read 2988 times)
West,J.71
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« on: June 17, 2006, 09:18:38 PM »

I have a friend that just aquired a factory 427 bigblock,i think he said it came out of a truck. (not sure if this is its origins) I'll try to get the casting #'s. But just curious what this engine goes for nowadays? Anyone know?
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lakeholme
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« Reply #1 on: June 18, 2006, 10:34:36 AM »

I have no doubt that your friend's motor came out of a truck.  I had to replace the motor in my S-10 last year and my local mechanic told me there was a 427 available.  Needless to say I declined...
There is a 67 427 Vette Tri-Power on ebay right now.  The bidding ends today, and right now with 11 bids it's at $9500.  Of course it could go much higher.
Chevy High Performance has an article on their web site that lists a literal 427 "Brute" (550hp) at turnkey for about $13000.  I ran across this the other day, but not sure of the date of the article.
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Phillip
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nuch_ss396
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« Reply #2 on: June 18, 2006, 11:24:32 AM »

There are tall block 427's and I'd suspect most would stay from them, unless they are real hardcore racers.

There are also standard deck 427's from light duty trucks out there as well.  Quite of few of these had 4-bolt
mains if I remember correctly.  These may be more desireable.

Post the casting number of the engine block in question and possibly the heads if you can get them.

Steve
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william
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« Reply #3 on: June 18, 2006, 11:51:56 AM »

There are 3 architectures for 60s-70s big-block Chevy engines:

-oval port
These are general performance passenger car/light-duty truck engines offered in all displacements: 396, 402, 427, 454. They typically have 2-bolt mains, general performance hydraulic lifter camshafts, Quadra-Jet carbs on cast-iron intakes. Some early apps did use Holley carbs; some Corvettes had QJs on aluminum intakes. They are refered to as oval port because the cylinder heads have oval-shaped intake ports. Later 'smog' heads had smaller ports and are nearly worthless. Included are the 325hp/396, 350hp/402, 335hp/427, 360hp/454. Hundreds of thousands were made; intact and running they have value and are in demand largely from restorers, not widely used for racing.

-rectangular port
These are special high performance passenger car engines offered in all displacements: 396, 402, 427, 454. Never used in trucks. They had 4-bolt mains, high-performance solid lifter camshafts, Holley carbs on aluminum intakes. They are refered to as rectangular port because the cylinder heads have large rectangular intake ports. Some versions had aluminum heads. Included are the 375hp/396, 375hp/402, 425hp/427, 450hp/454. Fairly limited production; intact and running any one of them is quite valuable because so many were used up racing.

-tall-deck
Some truck applications used a cylinder block that had 0.400" taller deck heights to accomodate truck-only 4 ring pistons. This means standard bb intakes and other parts do not interchange. There is a 366 cubic inch version that is absolutely worthless; other versions may have some value to racers. They have no value to restorers.

With the huge selection of aftermarket blocks/heads and Chevy crate engines, rebuilding and modifying a used up engine no longer makes much sense.
 
Figure out what you have; price accordingly.

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West,J.71
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« Reply #4 on: June 18, 2006, 06:06:41 PM »

Thanks all for the info,i'll see if i can get the #'s and post them.
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JohnZ
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« Reply #5 on: June 18, 2006, 06:50:35 PM »

There were several at Bloomington this week that illustrate the range - a complete but used 2-bolt '66 427/390 lo-perf short block (no heads) for $5,500.00, and a freshly rebuilt 4-bolt '66 427/425 hi-perf short block (no heads) for $15,900.00. Most fit somewhere in that range, depending on many variables.
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