6.0 iron block worth the weight?
Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 866
Likes: 22
From: Savannah GA
6.0 iron block worth the weight?
I have a couple LS1's and a LQ9 sitting in the garage I want to do something with. I'm looking for a C5, so I might just start planning my first LS1 based engine build 
Up to this point it's all been Gen 1's and 2's so it ought to be interesting.
I know pretty much everything else on the 6.0 is useless. The heads flow nice but are iron too, intake, oil pan, I'm going to ebay the left over goodies.
I'm thinking of putting together a stroker package with it. I'm pretty much already set of the L92/L76 package and I know the block is pretty strong. Question is, it's 100 pounds more, is it worth the weight, or should I just ditch it and get and LS2 block? I'd really like to have an aluminum 6.0 block but I cant find any for some reason.
Up to this point it's all been Gen 1's and 2's so it ought to be interesting.I know pretty much everything else on the 6.0 is useless. The heads flow nice but are iron too, intake, oil pan, I'm going to ebay the left over goodies.
I'm thinking of putting together a stroker package with it. I'm pretty much already set of the L92/L76 package and I know the block is pretty strong. Question is, it's 100 pounds more, is it worth the weight, or should I just ditch it and get and LS2 block? I'd really like to have an aluminum 6.0 block but I cant find any for some reason.
Racer
Joined: Apr 2004
Posts: 391
Likes: 7
From: Garland Texas
Do the ls2 if your putting it in the vett, I did mine with the ls2 and made a 408 and a bunch of hp. 
With a l92/ l76 you can get even more. There where about three or four ls2 block about a week ago on ebay, do no think there is that many now but they seem to come in ways lol. I can give you a # of a guy to call if you do not find one.
Good luck!
With a l92/ l76 you can get even more. There where about three or four ls2 block about a week ago on ebay, do no think there is that many now but they seem to come in ways lol. I can give you a # of a guy to call if you do not find one. Good luck!
Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 866
Likes: 22
From: Savannah GA
I would check ebay but the military blocked the site from gov't computers 
so I cant do that right now.
I've heard that the LS2 is the way to go but I need to make some changes because of the block, like the cam sensor. I'd rather not do that if I could avoid it, but I guess I will have to. I'm assuming the iron block hurts overall performance of the C5 with the extra weight?
so I cant do that right now.I've heard that the LS2 is the way to go but I need to make some changes because of the block, like the cam sensor. I'd rather not do that if I could avoid it, but I guess I will have to. I'm assuming the iron block hurts overall performance of the C5 with the extra weight?
Racer
Joined: Apr 2004
Posts: 391
Likes: 7
From: Garland Texas
There are new Plug and play with cam and Knock sensors. The intake has the plug and play all so. The ls2 can make great power with less weight.
When you get ready for a block Im me and i will let you know a place to pick up a block.
The ls2 can make great power with less weight. When you get ready for a block Im me and i will let you know a place to pick up a block.
Safety Car
Joined: Jul 2001
Posts: 4,661
Likes: 67
From: Ocean Springs MS
If it's actually an LQ9, the heads are the same as LS6s with larger chambers, and should definitely be aluminum. If they are iron, you don't have an LQ9, and might want to double check to make sure it's actually a 6L block.
LQ9 heads are quite popular for FI applications.
Team Owner
Joined: Apr 2001
Posts: 26,795
Likes: 614
From: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
St. Jude Donor '06
I have had a 427 LS series iron block several years ago and its about 100 lbs heavier (but a supercharger kit is probably 80) no big deal for the extra power, but if you are staying N/A I to would go with a 402 or 408 LS2 stroker with new L92 heads and L72 intake which makes for a killer motor (without the weight penalty) and are becoming very, very affordable!!
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Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 866
Likes: 22
From: Savannah GA
it'll be NA.
It's a 6.0L. Could be an LQ4 but I dont care, it's a 6.0L 2000+ were aluminum block, and I think 99 were aluminum headed, and 98 were all iron, something like that.
Looks like I'll sell the 6.0L and the LS1 and either resleeve my LS1 block or just buy an LS2 block. Need something 4" to clear the heads.
It's a 6.0L. Could be an LQ4 but I dont care, it's a 6.0L
2000+ were aluminum block, and I think 99 were aluminum headed, and 98 were all iron, something like that.Looks like I'll sell the 6.0L and the LS1 and either resleeve my LS1 block or just buy an LS2 block. Need something 4" to clear the heads.
Melting Slicks
Joined: Aug 2006
Posts: 2,475
Likes: 97
From: KY/TN
St. Jude Donor '13-'14-'15-'16
I have been debating the same issue. I have a 2000 LQ4 6.0L (iron block/iron heads) in the basement. I think I will wait for now, and see how much cheaper the LS2s get.
Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 866
Likes: 22
From: Savannah GA
I might ebay mine. I have a ton of LS1 stuff but nothing that really stands out as having some use to me. I got an almost new LS1 (320 miles), 3 new cranks, rods, pistons, all leftovers when I was working at a dealership. They were gonna junk all this new stuff. I was thinking of just getting another block, but it would probably cost more to resleeve an LS1 block than to just buy an LS2 block.
Seriously now considering ebay'ing all the extra stuff and putting into the 'soldier needs a 402 for his C5 fund'
I think I'm gonna unload my '94 as well as much as I'd hate to. I was getting ready to put in a new 434 that would necessitate pretty much a new everything, so I can just get another chassis for cheap and use it. I can do that after the 402. I wanna try my hands at the new gen III/IV stuff
Seriously now considering ebay'ing all the extra stuff and putting into the 'soldier needs a 402 for his C5 fund'
I think I'm gonna unload my '94 as well as much as I'd hate to. I was getting ready to put in a new 434 that would necessitate pretty much a new everything, so I can just get another chassis for cheap and use it. I can do that after the 402. I wanna try my hands at the new gen III/IV stuff
Racer
Joined: Jan 2006
Posts: 479
Likes: 1
From: Cape Coral FL
just a note on the ebay thing, this worked in highschool for me.. try www.ebay.ca (its the cannada ebay) I dunno how smart the gov't is 
Le Mans Master
Joined: Jan 2001
Posts: 5,786
Likes: 6
From: Lafayette Colorado
If you are thinking about doing a LQ4, aka 6.0L block, you might want to think about using the L92 block. It is a iron block, but it is 4.080" bore rather than a 4.000" bore. Get the extra CIDs, but still have the strength of the iron block. If the L92 block would have been out when I started my project, I would have used it rather than the LQ4.
Keith
Keith
Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 866
Likes: 22
From: Savannah GA
Magical question is, how much does one cost? I have the 6.0 block already (actually the complete engine) and it should need nothing but a minor overbore and magnaflux, and I would get it square decked.
There's $350 right there. The LS2 is $1000. Where does the L92 fit in?
There's $350 right there. The LS2 is $1000. Where does the L92 fit in?
Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 866
Likes: 22
From: Savannah GA
Sounds like the best thing to do so far is sell all of my extra LS1 stuff and just get an LS2 block. For the extra $100 I think aluminum is a better way to go... half the weight!
