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can i make LS1 block to 427ci ?

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Old 09-07-2009, 05:38 PM
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Default Sleeving the LS1

There is no way to reliably dry sleeve an LS1 block. The LS1 is wet sleeve (MID) only. Dry sleeve would need an LS2 or LS7 block with Darton Seal Tight dry liners.

Steve


Originally Posted by Bader-X
and if possible how much for a 427 LS1 short block with darton dry ..eagle or compstar crank and crank and rods ... used block without core
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Old 09-08-2009, 11:48 AM
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aha thanks

so how much for a 427 or larger used ls1 wet darton sleeved short block using eagle or compstar rods and crank with no core .... looks like a great option with stage 3 241 heads .... it says 5.7 on the block right? sleeper!
Old 09-08-2009, 08:04 PM
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Im in need of new motor and wanting to put a 427 with F1 behind it... Can these LS2 427's handle 12-15lbs of boost and no issues with cooling or dropping any sleeves??
Old 09-09-2009, 11:57 AM
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Default Turbo application

Turn Key builds twin turbo engines 900 - 950 to the wheels using my Darton Seal Tight dry liner sleeved blocks. Erik has one of his customers over a thousand.

You need to build the engine right so you keep it out of detonation and also make sure the cooling system is up to the task so you do not over heat the engine.

Steve


Originally Posted by waterbug1999
Im in need of new motor and wanting to put a 427 with F1 behind it... Can these LS2 427's handle 12-15lbs of boost and no issues with cooling or dropping any sleeves??
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Old 09-09-2009, 12:21 PM
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Originally Posted by Steve - Race Eng
Turn Key builds twin turbo engines 900 - 950 to the wheels using my Darton Seal Tight dry liner sleeved blocks. Erik has one of his customers over a thousand.

You need to build the engine right so you keep it out of detonation and also make sure the cooling system is up to the task so you do not over heat the engine.

Steve
Any detonation is bad rather its built or not, would a re-sleeved LS2 cause more / detonate easier??
What would you do to your cooling system other then a bigger radiater and maybe a cooler t-state?
Old 09-09-2009, 03:28 PM
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Default cooling

The combustion heat from making more power is what makes detonation more likely, not sleeving the block.

I recommend Evans coolant pump with the correct pulley diameter for your application. You want to keep the pump rpm below 5,500 at max. engine rpm. A bigger radiator is useless if the coolant pump cavitates and doesn't pump coolant out of the block.

Also for racing you want to leave out the stat for maximum flow. A small restrictor may be required in some applications.

Steve


Originally Posted by waterbug1999
Any detonation is bad rather its built or not, would a re-sleeved LS2 cause more / detonate easier??
What would you do to your cooling system other then a bigger radiater and maybe a cooler t-state?
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Old 09-09-2009, 03:37 PM
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Originally Posted by Steve - Race Eng
The combustion heat from making more power is what makes detonation more likely, not sleeving the block.

I recommend Evans coolant pump with the correct pulley diameter for your application. You want to keep the pump rpm below 5,500 at max. engine rpm. A bigger radiator is useless if the coolant pump cavitates and doesn't pump coolant out of the block.

Also for racing you want to leave out the stat for maximum flow. A small restrictor may be required in some applications.

Steve
Thanks for your time/knowledge..
Old 03-14-2011, 09:53 PM
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Originally Posted by jason00ss
i posed a similar question a couple weeks ago, i had wanted to make my ls1 400+ci, but the responses i got said that the stock block and sleeves can only be bored and stroked to 383, but you can resleeve your block to get your desired displacement. but they said that it is very pricey and a hassle and sometimes problems can arise from it. i was told it would be cheaper to either get a 6.0L iron block, or an ls2 block
Originally Posted by PONTIAC SLP
no i did't mean with the stock LS1 5.7 seelves , i meant aftermarket sleeves , we have here one shop said he can install block sleeves that we can run 427 stroker in a LS1 , so all what i need i want to be sure , is that true he can make it ? and it's safe for N/A application and high CR.
Really?
Old 03-15-2011, 02:07 AM
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that would be so hard..



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