LS7 a 7.0L
#1
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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:
![](http://pic3.picturetrail.com/VOL22/552911/5336871/70133713.jpg)
Here's a pic of the top of the motor:
![](http://pic3.picturetrail.com/VOL22/552911/5336871/70133752.jpg)
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:
![](http://pic3.picturetrail.com/VOL22/552911/5336871/70133739.jpg)
This is what makes me think that this must be a production Gen 4 block. The exhaust ports can also be seen.
The car:
![](http://pic3.picturetrail.com/VOL22/552911/5336871/70133713.jpg)
Here's a pic of the top of the motor:
![](http://pic3.picturetrail.com/VOL22/552911/5336871/70133752.jpg)
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:
![](http://pic3.picturetrail.com/VOL22/552911/5336871/70133734.jpg)
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:
![](http://pic3.picturetrail.com/VOL22/552911/5336871/70133739.jpg)
This is what makes me think that this must be a production Gen 4 block. The exhaust ports can also be seen.
The car:
![](http://pic3.picturetrail.com/VOL22/552911/5336871/70133728.jpg)