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Engine Choice Question.

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Old May 4, 2007 | 01:11 PM
  #1  
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Default Engine Choice Question.

My Dad and I have still not started our project (1967 Vert.). He called me today and told me about an engine that he had heard about that was for sale and we got to talking. Anyways, he wants to put a 427 Block back in the car because he said it would be worth more. So here is my question, Would there be differences in the value of the car if it had anyone of the following choices?

454 Block with a 427 crank
427 Later Casted Block (1970's - present)
427 Block Casted in the same Era as his 67 (1963 - 1969)

The engine will be modified for some extra HP. We are not looking to restore to original, I am basically just trying to find out if the block choice has any effect on the value of the car.

Thanks in advance,
Blake
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Old May 4, 2007 | 01:40 PM
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Hi Blake.. Just guessing as to the preferences of others I'd say a Vintage
Era Block would draw the most acceptance.. an L-88 or Tri Power clone
would have guys frothing at the mouth..some of the numbers matching guys are Hard/Nut that way... but I think most, deep down would know it's cool... and will appreciate the effort to keep it period correct
though not numbers matching.
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Old May 4, 2007 | 05:08 PM
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The statement "he thinks it would be worth more is totally subjective". If indeed the car was an original 427 car, then by all means find the correct casting and dated block for it. If it wasn't a big block then to anyone that knows Corvettes and is looking to buy an original type of car, the modification from a small to a big block engine would totally devalue the car for the majority of buyers. However if this is something that you are doing for yourself to have fun with, than it really doesn't matter which year block you choose to use. However if your goal is to try to emulate a '67 427 car, then anything less than a period correct, correct casting numbered, dated block with correct heads and intake would be futile. You can expect to pay more than $3K for a "correct" 427 bare block these days because everyone wants to build a fake 427 car and pawn it off at some BJ auction. Just my 2 cents.
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Old May 4, 2007 | 05:29 PM
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Build it the way it gives you the most satisfication and pleasure. I purchased my car with a 402 big block and a original Tri-Power. I have no clue if it is a original Big Block car. Now it is a GM Performance Parts 454/425hp HO engine still with the L71 Tri-Power. I built it so it looks good and runs great. Do it your way and enjoy it. Don't worry about the engine adding value to the car.
Roy
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Old May 4, 2007 | 06:09 PM
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Most people worry more about how doing this or that will affect the "value" of their car... the real value is how you much you enjoy the car... not how much it is worth when you sell it.....
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Old May 4, 2007 | 07:49 PM
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Originally Posted by rbwamsley
So here is my question, Would there be differences in the value of the car if it had anyone of the following choices?

454 Block with a 427 crank
427 Later Casted Block (1970's - present)
427 Block Casted in the same Era as his 67 (1963 - 1969)

The engine will be modified for some extra HP. We are not looking to restore to original, I am basically just trying to find out if the block choice has any effect on the value of the car.

Thanks in advance,
Blake
FYI: Chevrolet quit making 427s in 1969 (for cars). The truck block would be a PITA to make work. The first year was 1966. Four years for the 427 block.

1967 427 blocks are expensive $$$$$$.

1969 427 blocks are expensive $$$$$$.

A 454 block would be the cheapest way to go. You should be able to get one for about $300. $100 for the crank and you are on your way.

P.S. Stay away from the Gen 5 & 6 stuff. Go with the Mark IV.
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Old May 4, 2007 | 08:02 PM
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Originally Posted by knight37128
P.S. Stay away from the Gen 5 & 6 stuff. Go with the Mark IV.
Why? I've been wondering if the big block stuff (blocks and heads) in the latest GMPP catalog are preferable to using period castings, since I assumed they may have benefited from engineering improvements.
Is this not the case?
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Old May 4, 2007 | 09:08 PM
  #8  
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Originally Posted by AmericanPie
Why? I've been wondering if the big block stuff (blocks and heads) in the latest GMPP catalog are preferable to using period castings, since I assumed they may have benefited from engineering improvements.
Is this not the case?
The after-market is geared for the Mark IV, so everything will cost more.

Plus Mark IV stuff was not made in Mexico.
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Old May 4, 2007 | 10:05 PM
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502 crate motor or if you have the bucks "572" --the smile factor alone will make it worth while --Glenn
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