LS7 a 7.0L
Originally Posted by GregWS6&z28
why do you think itll be the LS7 if it's in a race car? there's already been documentation out stating it's gonna be a 6.4 ???
TECH Addict
Joined: Jul 2002
Posts: 2,261
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Originally Posted by Chris442
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:
for THAT car, they would not allow the full 7 liter. It was dominant as it was, think what it would do if it had another 8 tenths of stroke 
Not really a C5R. LS7 Joel They are similar in many ways, but definately not a C5R.
Not really a C5R. LS7 Joel
They are similar in many ways, but definately not a C5R. 
On The Tree
Joined: May 2004
Posts: 100
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From: Breese, IL
Originally Posted by 2MuchRiceMakesMeSick
Is that a intercooler I see under the hood with a 427R. Someones got alot of money in that setup Oh boy, will there be some great parts floating around in a few months. Anyone wondering how they were running 7900rpms with a valvetrain that fits under those stock appearing valve covers?
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Brett Foote TECH Addict
Joined: Jul 2002
Posts: 2,261
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Originally Posted by Louis
for THAT car, they would not allow the full 7 liter. It was dominant as it was, think what it would do if it had another 8 tenths of stroke
Not really a C5R. LS7 Joel They are similar in many ways, but definately not a C5R.
Not really a C5R. LS7 Joel
They are similar in many ways, but definately not a C5R.
Looks like my LS6 motor will be replaced by an LS7.
Any ideas when I'll be able to buy forged internals for the LS7???
Launching!
Joined: Jul 2003
Posts: 259
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From: Raleigh, NC
it could be a c5r block, but to me looking at that completely motor setup , that could very much be the ls7. correct me i am wrong but the c5r motor didnt have the new style GM throttle body on it and the crazy looking intake..
if you wsa you dude, i be selling those pics to autoweek or something
if you wsa you dude, i be selling those pics to autoweek or something
Teching In
Joined: Oct 2003
Posts: 47
Likes: 0
From: Columbia, MO
Originally Posted by Buff
it could be a c5r block, but to me looking at that completely motor setup , that could very much be the ls7. correct me i am wrong but the c5r motor didnt have the new style GM throttle body on it and the crazy looking intake..
Its not a C5r block.
The heads are LS7 guys, different valvecovers as well. They Look the same, but they are not. Dont assume anything with this motor.
This is GM that is doing all of this. They can make anything happen.
Ill dig up some part numbers for you guys.
The heads are LS7 guys, different valvecovers as well. They Look the same, but they are not. Dont assume anything with this motor.
This is GM that is doing all of this. They can make anything happen.
Ill dig up some part numbers for you guys.
Thread Starter
Joined: Oct 2004
Posts: 187
Likes: 6
From: Phoenix, AZ
I've got another pic of the casting number of the block, and it definitely isn't a C5R. It's a crappy pic, but I can see 1257xx4x. That agrees with the numbers published here at the World Challenge site. In the same pic you can also see the 7.0L on the back of the block.
Last edited by Chris442; Oct 19, 2004 at 05:04 PM.
its a different version of the C5R block, its re sleeved and restroked to a 356 or somewhere about there emphasising revs. the 7.0l is from the base C5R block. that may be a new intake manifold, but the C5R already has rectangular ports.
Originally Posted by Louis
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
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
What happened to the LG vette? Looked catostrophically termnal!
Originally Posted by Louis
Ill dig up some part numbers for you guys.
SCCA Tech Sheets on the CTS-V's:
http://www.world-challenge.com/comp...ILLAC-CTS-V.pdf
http://www.world-challenge.com/comp...-CTS-V-REV1.pdf
Other tech sheets for Speed Channel World Challenge stuff here:
http://www.world-challenge.com/competitors/vts.html
