LSX block question
Thread Starter
Burning Brakes
Joined: Feb 2008
Posts: 766
Likes: 5
From: Texas
LSX block question
I have an LS7 that is has to be rebuilt due to an internal failure with a re-sleeved block (Darton). The engine is in a C6Z06 that is used pretty much exclusively off-road on the road coarses (advanced DE and time trials). I am considering going with an LSX block or is that overkill for a NA application. Anyone with direct experience using an LSX block?
Thread Starter
Burning Brakes
Joined: Feb 2008
Posts: 766
Likes: 5
From: Texas
All ready tried a re-sleeve, no thanks! I heard the LSX weight is ~ 80 lbs heavier than the stock aluminum block. What is the primary differences between the RHS block and the LSX other than manufacturer? It is my understanding the LSX block has to be bored to spec to fit the pistons of choice and can obviously be over-bored if you want. I plan to reuse my nearly new forged pistons. I was told the oiling circuit in LSX block was recently improved as well.
Former Vendor
Joined: Mar 2004
Posts: 3,442
Likes: 18
From: Winchester CA
All ready tried a re-sleeve, no thanks! I heard the LSX weight is ~ 80 lbs heavier than the stock aluminum block. What is the primary differences between the RHS block and the LSX other than manufacturer? It is my understanding the LSX block has to be bored to spec to fit the pistons of choice and can obviously be over-bored if you want. I plan to reuse my nearly new forged pistons. I was told the oiling circuit in LSX block was recently improved as well.
Thread Starter
Burning Brakes
Joined: Feb 2008
Posts: 766
Likes: 5
From: Texas
RHS block is aluminum versus iron for the lsx, there are obviously other differences too.... its Unfornuate you had issues with a resleeving of your current ls7... we use Steve at Race Engine Development, he has done many ls7, ls2, and ls3 resleeves for us without one single issue... in my opinion you might want to give him a call.
Former Vendor
Joined: Apr 2006
Posts: 2,470
Likes: 2
From: Portland OR
St. Jude Donor '10-'11-'12
We use RED as well Steve did my personal (LS2 re-sleev for my 457).
THe RHS is a badass aluminum block at about 4600.. The LSX is a badass iron block at about 2200. You can get just about the same combination with both.. the LSX is a good choice for boost or n2o
THe RHS is a badass aluminum block at about 4600.. The LSX is a badass iron block at about 2200. You can get just about the same combination with both.. the LSX is a good choice for boost or n2o
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
Thread Starter
Burning Brakes
Joined: Feb 2008
Posts: 766
Likes: 5
From: Texas
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