LS6 or C5R block
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From: Milwaukee, WI
LS6 or C5R block Looking to start building a seperate motor in my garage and wanted to get some opinions on what block I should use for the set up, a Ls6 or C5r block? Not sure of what displacement I'm gonna go with yet 383, 396, 408, or 427. I think I might want a blower on it too. I just want some opinions from the masses on what block they would use and why.
Mmmmmmm...newww engine!
Mmmmmmm...newww engine!
i've got the same issue, altho i think i have a little more time to contemplate...if i get the gig i'll have at least a year to think about it(albeit in iraq). the ls6 block afaik isn't much different then your stock ls1, however the c5r is worlds apart. its also $6k. for the bare block. you might want to wait a little while, as the new Z06 is supposedly going to have a 427 c5r-type motor in it...the blocks should be comparable? might drop the price a bit, but the new z06 doesn't hit the floors til mid-2006 i beleive? all things to consider. also, afaik the new ls2 uses a 6.0L aluminum truck block.
TECH Apprentice
Joined: Jan 2002
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From: Texas
If you have the money, I would go with the C5R block over any of the blocks you mention.
The new C6 Z06 has a lot of rumor circulating about engine displacement and power. If you have the time to wait, then it may be worth it, but the odds are against the Z06 being a 427ci right now. The common consenses is a 6.4L with 3 valve heads and a 7.0L has been rumored as of late. The 6.4L is said to be a stroked LS2 block with new heads and I haven't heard a thing about what the 7.0L would be(larger bore, longer stroke or a combo of both).
Todd
The new C6 Z06 has a lot of rumor circulating about engine displacement and power. If you have the time to wait, then it may be worth it, but the odds are against the Z06 being a 427ci right now. The common consenses is a 6.4L with 3 valve heads and a 7.0L has been rumored as of late. The 6.4L is said to be a stroked LS2 block with new heads and I haven't heard a thing about what the 7.0L would be(larger bore, longer stroke or a combo of both).
Todd
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From: Elmhurst, IL (Chicago Suburb)
Originally Posted by TApimp
i read somewhere that says the newer ls1 blocks are actually stronger, and have better oiling and cooling setup
TECH Senior Member
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From: Troy, AL
Depends on how much power/RPMs you're going to be making. I'd start seriously thinking C5R when the power gets above about 800 RWHP or the RPMs get higher than 8500-9000. That's just my impression.
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From: Milwaukee, WI
Originally Posted by hugger427
When you go to sell your car...your re-sale should be much higher if it's a C5-R blocked 427.
Originally Posted by z98
Resale value is insignifigant.
You'll never get near the amount of money back for it.
You'll never get near the amount of money back for it.
your right, resale may be a strong word in this hobby...maybe more desirable would be a better term for the C5-R block...which should be worth a buck or two more...BTW, your sig is priceless
Originally Posted by z98
Thanks.
Can you believe someone sent me a PM (serious? not quite sure) asking me whether or not I liked the movie?
Apparantly my sig didn't "send a strong message."
Can you believe someone sent me a PM (serious? not quite sure) asking me whether or not I liked the movie?
Apparantly my sig didn't "send a strong message."
