Max HP for LS7 Block?
Max HP for LS7 Block? I know this has been debated in the past but I am looking for some solid numbers. What is the limit of a stock LS7 block? Hot Rod this month indicated 600 HP was max because the cylinder walls are too thin. I was considering putting low compression pistons in an otherwise stock LS7 and putting 10-15 lbs of boost in it. That is more than 600 Hp and I hate to crack the block (again - another story). Anyone actually experience a failure?
On The Tree
Joined: May 2003
Posts: 129
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From: Kennesaw, Ga
The GM High Performance Parts catolog shows GM's recomended max hp. rating for GM's current blocks, as I recall. I'm not at home to look up the LS7 block but if memory serves... it was ~750/800 hp.
Launching!
Joined: Apr 2007
Posts: 264
Likes: 0
From: College Station, TX
Originally Posted by slow95z
the LS1 block with wet sleeves can take a ton for sure.
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Originally Posted by Shock Hawk
Sry, what do you mean by wet sleeves? Are there dry sleeves? (I know about the sleeves in the cylinders, just not the terms pertaining to moisture)
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TECH Addict
Joined: Aug 2004
Posts: 2,866
Likes: 4
LS7 blocks have taken massive abuse and come out shinning! i have seen 800rwbhp N2O setups and a 1000+bhp twin turbo.
if the liners do crack then have a word with R.E.D (race engine development) on here. they can now do new ducile iron sleeves for the LS7.
thanks Chris.
if the liners do crack then have a word with R.E.D (race engine development) on here. they can now do new ducile iron sleeves for the LS7.
thanks Chris.
