C5r or Ls2 block
#2
TECH Junkie
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One difference is that the C5R block comes with billet main caps...now, does this advantage justify the ~4K difference in price?...I'd say not. The bore size will be a factor as well...what bore are you planning? The C5R has a finish bore in the neighborhood of 4.125, the LS2 is 4, so if you want bigger than 4, you'll have to resleeve the LS2. Just a few tidbits I can think of, I'm sure the experts will chime in with a wealth of knowledge...
#4
C5R also has bad *** main studs and head studs already in it. They are the really good ones. Plus the block is alot stronger. They run these motors at really high rpms for really long amounts of time. They hold up really nice to that abuse and will be able to support whatever you throw at it.
#6
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Both blocks are a very nice product. In my opinion it realy depends on what ci you want to build. If you are wanting a big bore motor & have a little over $6,000.00 to spend on a block, the C5R is the way to go. The LS2 block is 4.000 bore from the factory and will go to a 4.020. This block can be purchased at SDPC For $995.00. We sell a good amount of each. The C5R is alot stronger block, it's just a matter of what block will do the job.
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#11
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just go by the pimp factor...i mean someone walks up to you what kinda motor is that... "Ls2...bla bla..." ah thats cool...but imagine saying..."oh its a C5R...." thats just pimp right there...but ya it should really depend on your $$$ above all else.
#12
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Originally Posted by y2khawk
uhh, no.
Cast from a different alloy than production blocks, but cast never the less.
Cast from a different alloy than production blocks, but cast never the less.
#13
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C5R blocks are cast from a different alloy, are something like 2 times stronger than an LS1 casting. Unfortunately I have forgotten most of what the block manufacturer told me but it was very impressive. But I think part of the high price is that the blocks go thru like 3 companies before we can buy them.
#14
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I was mistaken about the C5R block. There must be somebody out there building LS1 blocks like this.
http://www.cnblocks.com/splaysbc.htm
http://www.cnblocks.com/splaysbc.htm