427/454 engine build question
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From: Scotch Plains NJ
427/454 engine build question
I have had contact with someone with a rebuilt engine. Based on the casting numbers and Mortec it has a 454 block and head and a 427 crank. Will this have any negative effect on the engine performance? What size engine would you consider this? A 454 based on the block or a 427 based on the crank and stroke?
Russ
Russ
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From: Michigan
Re: 427/454 engine build question (ruskus)
Same block is used for both engines, which have the same 4.25" bore. It is the different crank that determines the stroke(the distance the piston goes up and down) which can add cubic inches. Also, the 454 crank is externally balanced verses internally on the 427 crank.
Hopefully I am making myself clear. Maybe someone else can chime in.
Dwayne
Hopefully I am making myself clear. Maybe someone else can chime in.
Dwayne
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From: Scotch Plains NJ
Re: 427/454 engine build question (Flareside)
It's a 427. The main difference between a 427 and 454 is the crank. Same block. The 427 uses a shorter stroke crank.
Or a better question, would you assume (yes i know, never assume) that the engine would have 427 casting numbers?
[Modified by ruskus, 2:06 AM 4/2/2002]
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From: Roxbury NJ
Re: 427/454 engine build question (ruskus)
It's a 427. The main difference between a 427 and 454 is the crank. Same block. The 427 uses a shorter stroke crank.
Would you feel cheated if you purchased this engine as a 427, not number matching, and it didn't have 427 casting numbers on the heads and block?
Or a better question, would you assume (yes i know, never assume) that the engine would have 427 casting numbers?
[Modified by ruskus, 2:06 AM 4/2/2002]
Would you feel cheated if you purchased this engine as a 427, not number matching, and it didn't have 427 casting numbers on the heads and block?
Or a better question, would you assume (yes i know, never assume) that the engine would have 427 casting numbers?
[Modified by ruskus, 2:06 AM 4/2/2002]
There are too many 454 heads out there to know what you've got. Maybe you could post the numbers? How did you figure out that you have a 427 crank?
-Joe
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From: Scotch Plains NJ
Re: 427/454 engine build question (Flareside)
He checked the casting number on the crank #6223 which checks out as a 427 crank. It seems the only premium he paid was for the "427 forged steel crank". Still seems a little shaky to me. Maybe I am just stuck on semantics or maybe the engine rebuilder should have made it clear what was being used.
Another question - why rebuild it with a 427 crank in the first place - why not just use a 454 crank?
[I]Also, the block is 14015445 and the heads are 6272292 .[/]
[Modified by ruskus, 2:46 AM 4/2/2002]
[Modified by ruskus, 1:07 PM 4/2/2002]
Another question - why rebuild it with a 427 crank in the first place - why not just use a 454 crank?
[I]Also, the block is 14015445 and the heads are 6272292 .[/]
[Modified by ruskus, 2:46 AM 4/2/2002]
[Modified by ruskus, 1:07 PM 4/2/2002]
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From: Clymer PA
Re: 427/454 engine build question (ruskus)
Another question - why rebuild it with a 427 crank in the first place - why not just use a 454 crank?
In hindsight I kind of wish I would have built a 427 instead of the 454 that I am almost finished with. A 427 is a really smooth revving engine. I wouldn't feel cheated at all I would be very pleased to own 427.
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From: Roxbury NJ
Re: 427/454 engine build question (ruskus)
I have had contact with someone with a rebuilt engine. Based on the casting numbers and Mortec it has a 454 block and head and a 427 crank. Will this have any negative effect on the engine performance? What size engine would you consider this? A 454 based on the block or a 427 based on the crank and stroke?
Russ
Russ
