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Update: KATECH Value 427 LS3 engine 605hp/575ft-lbs!

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Old Mar 23, 2012 | 12:13 AM
  #21  
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Or plug n play rather.
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Old Mar 23, 2012 | 07:13 AM
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Originally Posted by bww3588
Is that the short block price? What are we looking at for a long block? Turn key?
Yes.

Long blocks and complete engines will be quoted for each job because they can vary based on what's included, but roughly speaking around $15k for a long block and $18-20k for a complete engine.
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Old Mar 24, 2012 | 10:35 AM
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Originally Posted by Katech_Jason
Yes.

Long blocks and complete engines will be quoted for each job because they can vary based on what's included, but roughly speaking around $15k for a long block and $18-20k for a complete engine.
WOWzee
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Old Mar 24, 2012 | 01:21 PM
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Would it be possible to run cnc ported 243 heads on this or do you think you should just run ls3 heads? Thanks
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Old Mar 24, 2012 | 02:08 PM
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Not sure if this has been asked but how does this block hold up to boost?
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Old Mar 24, 2012 | 10:44 PM
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what's the difference between the short/long block? just heads/cam?

Edit: just talking about this particular engine. I know the difference between a shortblock and longblock.

Last edited by Mr. Sir; Mar 25, 2012 at 03:08 AM.
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Old Mar 24, 2012 | 10:47 PM
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Long block has heads, short does not. I doubt you get a cam with either options unless you specify and pay extra.
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Old Mar 24, 2012 | 11:08 PM
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I know that's supposed to be the difference, but I really can't think of any heads worth $9000. I was just wondering what the extra $$$ go toward.
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Old Mar 25, 2012 | 01:07 AM
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Originally Posted by Mr. Sir
I know that's supposed to be the difference, but I really can't think of any heads worth $9000. I was just wondering what the extra $$$ go toward.
Lol....
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Old Mar 26, 2012 | 07:32 AM
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Originally Posted by BrazenBeast
Would it be possible to run cnc ported 243 heads on this or do you think you should just run ls3 heads? Thanks
You should run LS3 heads.

Originally Posted by Detoxx03
Not sure if this has been asked but how does this block hold up to boost?
It is not meant for boost.

Originally Posted by bww3588
Long block has heads, short does not. I doubt you get a cam with either options unless you specify and pay extra.
Short block is block, crank, rods, pistons, bearings.

Long block is a complete engine minus electronics, intake, and oil pan.
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Old Mar 27, 2012 | 05:40 PM
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What about using small bore LS7 heads and LS7 intake?
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Old Mar 27, 2012 | 06:20 PM
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Originally Posted by Katech_Jason
You should run LS3 heads.



It is not meant for boost.



Short block is block, crank, rods, pistons, bearings.

Long block is a complete engine minus electronics, intake, and oil pan.
How much would an ARE dry sump setup be for this motor in an 06 gto? Would it require a different crankshaft. Thanks
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Old Mar 28, 2012 | 01:41 PM
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Originally Posted by Robofuzz
What about using small bore LS7 heads and LS7 intake?
We have not analyzed this combination. It should be looked at and possibly mocked up by a qualified engine builder. We designed this for LS3 heads.

Originally Posted by BrazenBeast
How much would an ARE dry sump setup be for this motor in an 06 gto? Would it require a different crankshaft. Thanks
You could use an ARE system that mounts the pump where the AC compressor was. A different crankshaft would not be required. Pan, tank, and pump should be about $3500.
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Old Mar 29, 2012 | 06:17 PM
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Originally Posted by Katech_Jason
It is not meant for boost.
I figured that.
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Old Mar 29, 2012 | 07:26 PM
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Originally Posted by Katech_Jason
You could use an ARE system that mounts the pump where the AC compressor was. A different crankshaft would not be required. Pan, tank, and pump should be about $3500.
Thanks Jason! How do you expect this motor to hold up to occasional road racing? Will it be ok with higher sustained rpm's or is this engine intended more for the street?

Thanks again
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Old Apr 2, 2012 | 01:28 PM
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Originally Posted by BrazenBeast
Thanks Jason! How do you expect this motor to hold up to occasional road racing? Will it be ok with higher sustained rpm's or is this engine intended more for the street?

Thanks again
I would expect it to hold up to occasional light HPDE use. I'm not sure what you are defining as higher rpm, but the engine has a suggested redline of 6800. If you were to maintain a lower redline it would also help prolong engine life.
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