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LS7 a 7.0L

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Old Oct 18, 2004 | 10:35 PM
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Thumbs up LS7 a 7.0L

Looks like the Caddy team forgot to use some duct tape. I was at the World Challenge race at Laguna Seca over the weekend, and I got to see the Pratt & Miller boys change an engine in one of the CTS-vR's. Look what was cast into the block:


Here's a pic of the top of the motor:

Look at the big runners and the 90mm TB. This is the same setup that was on the GTO show car.

This is the head casting number:

You can also see the big exhaust port. You can't see in this pic, but its a D-port.

This is a knock sensor in the side of the block:

This is what makes me think that this must be a production Gen 4 block. The exhaust ports can also be seen.

The car:
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Old Oct 18, 2004 | 10:39 PM
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Looks sweet
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Old Oct 18, 2004 | 10:50 PM
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Duct tape is your friend Nice spy shots there Chris
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Old Oct 18, 2004 | 11:17 PM
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Nice stuff hunh

We got to compete against that thing with a Standard bore/stroke, LPE headed, GrandAm cammed 346

Thats what running against a factory team is like. Ryan can tell you
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Old Oct 18, 2004 | 11:19 PM
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Is that a intercooler I see under the hood with a 427R. Someones got alot of money in that setup
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Old Oct 18, 2004 | 11:24 PM
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NA, 358 CID. 4.1xx bore, 3.2xx stroke, 2.12 intake valves and so on...
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Old Oct 18, 2004 | 11:29 PM
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Nice shots but I am going to have to confiscate those and retire to my quarters...
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Old Oct 18, 2004 | 11:30 PM
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Louis, you aren't kidding man. It must definitely be an uphill battle when the rules are set like that for factory teams. It must be nice to have GMs budget too
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Old Oct 18, 2004 | 11:30 PM
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What part of the block is that 7.0L cast into? I can't figure it out. I'm guessing to the side of the crank pulley area?
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Old Oct 18, 2004 | 11:36 PM
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Yep. May have been the back since the motor was on a stand. It is in the same spot the std. 5.7 is on any LSx block.
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Old Oct 18, 2004 | 11:44 PM
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It's right by the water pump outlet. There was also another "7.0L" on the back of the block.
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Old Oct 18, 2004 | 11:59 PM
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How'd you get close enough to take those pictures? They just let people walk up to them?
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Old Oct 19, 2004 | 12:02 AM
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Hmmm.. wonder if the GM guys will be happy when they surf this thread tomorrow

Is this motor public knowledge yet?
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Old Oct 19, 2004 | 12:05 AM
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In the last pic, there was a little fence right where I was standing to take the pic. When the had to take the engine out, they had to move the fence to fit the hoist in front of the car. I was literally feet away when I got those pics.
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Old Oct 19, 2004 | 12:07 AM
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that is so bad ***...



Dont antagonize the GM guys too much no brian
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Old Oct 19, 2004 | 12:10 AM
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Originally Posted by Brains
Hmmm.. wonder if the GM guys will be happy when they surf this thread tomorrow
The crew members didn't seem to be too happy to see a guy with big Nikon SLR snapping close-ups of their motor.
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Old Oct 19, 2004 | 12:25 AM
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Haha! Nice work, man!
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Old Oct 19, 2004 | 02:10 AM
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Originally Posted by Chris442
The crew members didn't seem to be too happy to see a guy with big Nikon SLR snapping close-ups of their motor.
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Old Oct 19, 2004 | 07:45 AM
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Good info...
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Old Oct 19, 2004 | 07:59 AM
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Looks like it is cast in the front. You can see where the lower radiator hose attaches.

Andrew
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