Ls9 blocks for fi
Drifting
Joined: Feb 2007
Posts: 1,844
Likes: 12
From: Alpharetta Georgia
I read on LS1tech that the LSX block versus just the aluminum LS2/3 block shows the LSX unit weight 180lbs more. That is a **** ton of weight over the nose. If you aren't gunning for 900whp or more, just stick with these aluminum blocks. Hell, the only reason why I would say 900whp being the limit for the aluminum block is only because they don't have a 6 bolt head configuration like the LSX units do, and you would "probably" start having issues with pushing water.
Race Director
Joined: Jul 2005
Posts: 11,220
Likes: 985
From: Think BEFORE hitting "Submit Reply"
That is pretty nice.
Looks like I'll use the better LS3 block when the time comes to do the engine.
Thanks for the info, I really appreciate it!
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
The LQ4 and LQ9 6.0L truck blocks are only about 80 pounds more than the factory aluminum blocks but the iron LSX block weighs notably more than those factory iron blocks as well.
Guest
Posts: n/a
I think that is closer to the truth, but I believe you can have ~80lbs machined off the block, so that puts you down to around 100lbs more. Moving the battery to the rear of the car offsets some of that weight, as would a rear mount system, although I think Nick is planning a top mount. I am sure there are additional ways to balance the weight, however I suspect that only the most experienced would notice the difference.
Former Vendor
Joined: May 2003
Posts: 2,173
Likes: 2
From: Dallas Texas
I have a few LSx builds coming through the shop in the next week to 2, Ill weigh a block. It is heavy, yes, but nick, if you are not planning on more than 1200, whats the point of going Twin 76s?
Every TT car we build gets an Iron LSx and 6 bolt configuration.
Every TT car we build gets an Iron LSx and 6 bolt configuration.
Melting Slicks
Joined: Sep 2004
Posts: 3,153
Likes: 114
be nice to see the oil squirters form the LS9 installed on the LS3.
Chris.
PS. what about the roating asembly?? wonder if it will be able to hold upto the abuse like the Ford stuff can. heard some are running over 1200bhp on stock bottom ends!!!
Chris.
PS. what about the roating asembly?? wonder if it will be able to hold upto the abuse like the Ford stuff can. heard some are running over 1200bhp on stock bottom ends!!!
Drifting
Joined: Aug 2008
Posts: 1,399
Likes: 30
Is anyone making extreme power (800 rwhp+) pushing their cars to the limit on the curvy tracks anyways?
Last edited by ysb02; Dec 29, 2008 at 12:49 PM.
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Former Vendor
Joined: Jun 2006
Posts: 1,622
Likes: 3
From: Dallas TX
Melting Slicks
Joined: Sep 2005
Posts: 2,521
Likes: 146
From: Watertown CT
Not $hit talking, but have there been any failure's of the LS7 blocks? I haven't seen any but I have seen some big power put down through them. I do know that most people aren't as quick to talk about the bad of their builds though. Just wondering.
Dan
Dan
Le Mans Master
Joined: Aug 1999
Posts: 8,827
Likes: 10
Dan,
You make a VERY good point. The block itself is pretty stinkin strong!
I think the big power folk's concerns are that the heads lift when you make (roughly) more than 1200-1300 RWHP with the LS7's 4 bolt head configuration.
The LSX and warhawk's have the 6 bolt configuration which allows for A LOT more power.
You make a VERY good point. The block itself is pretty stinkin strong!
I think the big power folk's concerns are that the heads lift when you make (roughly) more than 1200-1300 RWHP with the LS7's 4 bolt head configuration.
The LSX and warhawk's have the 6 bolt configuration which allows for A LOT more power.
Thread Starter
Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
I have a few LSx builds coming through the shop in the next week to 2, Ill weigh a block. It is heavy, yes, but nick, if you are not planning on more than 1200, whats the point of going Twin 76s?
Every TT car we build gets an Iron LSx and 6 bolt configuration.
Every TT car we build gets an Iron LSx and 6 bolt configuration.
i got some 70 in the garage with .81ar
Thread Starter
Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
Dan,
You make a VERY good point. The block itself is pretty stinkin strong!
I think the big power folk's concerns are that the heads lift when you make (roughly) more than 1200-1300 RWHP with the LS7's 4 bolt head configuration.
The LSX and warhawk's have the 6 bolt configuration which allows for A LOT more power.
You make a VERY good point. The block itself is pretty stinkin strong!
I think the big power folk's concerns are that the heads lift when you make (roughly) more than 1200-1300 RWHP with the LS7's 4 bolt head configuration.
The LSX and warhawk's have the 6 bolt configuration which allows for A LOT more power.
alot of the big engine builders DONT run the 6th bolt ( warhawk) as its in a suspect location.......
if u believe GM that the 09 ls3 is going to be ~20% stronger then early ls series motors then there should be no reason to run anything other. NOW IF U ARE TALKING ABOUT CAR THAT GET HUNDREDS OF RUNS @ THE TRACK A YR THEN THATS MIGHT BE A DIFFERENT STORY
Safety Car
Joined: Oct 2001
Posts: 4,945
Likes: 0
From: Dallas/Valley Ranch TEXAS!!!
Le Mans Master
Joined: Aug 1999
Posts: 8,827
Likes: 10
Nick says: hey louis i never said i was going w/76...edward said that
5 vrs 6 btw
alot of the big engine builders DONT run the 6th bolt ( warhawk) as its in a suspect location.......
Thread Starter
Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
true ...wrong word not a bolt but a stud....
