C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

LTX Bowtie block?!

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Old Jan 15, 2009 | 04:46 AM
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Default LTX Bowtie block?!

At the risk of this getting locked, I found this on e-Bay. Pics look legit, but I've never heard of any such animal ever existing!

LTX block with a 4.12 bore and factory steel main caps:

http://cgi.ebay.com/ebaymotors/GENER...Q5fAccessories

If the link disappears, just go over there and do a search on "LT4 Bowtie"

I would have loved to go with that instead of my wimpy 4.03
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Old Jan 15, 2009 | 06:25 AM
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that's prety interesting.....it looks like it might be a nice piece.
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Old Jan 15, 2009 | 08:32 AM
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I don't know if the eBay one is the real deal or not, but a GENII big bore block does exist. Some GM collectors refer to them as a LeMans block...

I believe (7) of them are in public hands.

GM built them for a racing project but, the project never got off the ground due to introuduction of the LSX.
Will
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Old Jan 15, 2009 | 11:37 AM
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Old Jan 15, 2009 | 12:10 PM
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Cool never heard of that before.
Don't know if this was listed before, says "revised" on listing.

This is a very rare piece there is only about 10 of these in existance. This block was a special build by Flint engine plant for the engineers at GMs race shop. It is a generation 2 LT1 reverse flow cooling bowtie block. This block has 4.120" bores and 2.841" (400) main bores with steel splayed main caps the block also has screw in freeze plugs. It uses all the factory accessory bolt holes, factory roller cam and lifters and screw on oil filter and is stock deck height. Block is machined and ready to build. You could use this block to build a small blockLT1/LT4 427/454 cid engine for 92-96 corvette 93-97 camaro/firebird or 94-96 impala SS. I have this block in storage for over 10 years. Imagine driving an LT1/LT4 427/454 powered vette camaro/firebird or Impala SS
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Old Jan 15, 2009 | 12:18 PM
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I'm pretty sure there is a forum member that has one of these blocks, it may be "Steve40th".
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Old Jan 15, 2009 | 01:20 PM
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Me want
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Old Jan 15, 2009 | 02:33 PM
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wow, I wish something like this had come up when I started my project. I would have spared no cost to snag this block. I probably would have wanted to get it anyways and get new components but the larger bearing diameter isn't supposed to help for a high revving motor. What a beauty
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Old Jan 15, 2009 | 03:07 PM
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Originally Posted by STL94LT1
I'm pretty sure there is a forum member that has one of these blocks, it may be "Steve40th".
I wish it was me, but its not, otherise my Vette would be a big cube LTx engine with some serious HP under the hood.
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Old Jan 15, 2009 | 04:44 PM
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Yep, from the description and pics it is legit. I've seen one other one before and the owner wasn't letting it go. GM made these and for a time were referred to as th Lemans block, but they turned out not to be legal for use so the run was quickly discontinued. I would love to have one, but as you can see price can be a bit of a problem...
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Old Jan 15, 2009 | 05:10 PM
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You know a prepped stock block is over $1k
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Old Jan 15, 2009 | 05:16 PM
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I wonder what the reserve is on the auction? I might go $2k.
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Old Jan 15, 2009 | 05:23 PM
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If I was using the lt stuff I think I'd be giving that some serious consideration. If it ends up going for 1700. that doesn't seem too terrible, due to lack of options to build a reliable 400+ inch LT.
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Old Jan 15, 2009 | 05:25 PM
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That is nice, if I were building another LTX I would ****** it up..
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Old Jan 15, 2009 | 06:10 PM
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Originally Posted by BrianCunningham
You know a prepped stock block is over $1k
Unless the person NEEDS to get rid of it I doubt the reserve is set much below $3500
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Old Jan 15, 2009 | 07:35 PM
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Interesting. Food for thought, I paid $1450 if memory is correct for my GM Bowtie block SBC 1. I would think this would sell north of $2000 if it is a rare piece. Back in the day, LPE used to run over 1000 hp with these blocks.
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Old Jan 15, 2009 | 09:31 PM
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$2250 and still climbing.... I guess I don't want it that bad
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Old Jan 15, 2009 | 09:53 PM
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To bad they wouldn't do a limited run of like 500 units for around $1500.
I bet they would all sell.
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Old Jan 15, 2009 | 11:26 PM
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That would compare to one of GM's Bowtie CNC blocks. Billet main caps. That would have probably been a $2200 to $2400 block when it was available from GM.

Considering Buick Stage II blocks are trading in the $3500 range now for an unused one, that was far more available than one of these, I'd be thinking this one would go for over $4000.
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Old Jan 15, 2009 | 11:34 PM
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I'm the high bidder $2300 but still didn't hit the reserve. maybe $2500 would do it.
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