445 ci LS2 with ETP LS7 Heads
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On The Tree
Joined: Mar 2006
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445 ci LS2 with ETP LS7 Heads After gathering parts and waiting a ton, the "red demon" is finally nearly finished and running. The car is a 2002 z28. m6.
Parts:
LS2 bored to 4.155"
Eagle 4.1" Crank
Compstar 6.125" Rods
JE Custom Pistons
ETP LS7 heads
LS7 manifold
Comp Cams hydraulic 244/248 duration cam (111 lsa)
1-7/8" Kooks Headers
3" ORY
SLP cat-back
17x11" rims all around
Hoosier autocross tires
...obviously, the list can go on and on, but that is all the main things.
We are hoping for around 700 horsepower and 600 torque at the flywheel. I'll post pictures of the motor and build up as soon as I can get them up.
Parts:
LS2 bored to 4.155"
Eagle 4.1" Crank
Compstar 6.125" Rods
JE Custom Pistons
ETP LS7 heads
LS7 manifold
Comp Cams hydraulic 244/248 duration cam (111 lsa)
1-7/8" Kooks Headers
3" ORY
SLP cat-back
17x11" rims all around
Hoosier autocross tires
...obviously, the list can go on and on, but that is all the main things.
We are hoping for around 700 horsepower and 600 torque at the flywheel. I'll post pictures of the motor and build up as soon as I can get them up.
Last edited by PREDATOR-Z; Apr 28, 2007 at 03:48 AM. Reason: 4.155 bore
Thread Starter
On The Tree
Joined: Mar 2006
Posts: 105
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Sorry, the bore is 4.155". It was started for the first time Tuesday night. After letting it cool overnight the headers, rockers, and a few other parts need to be removed to re-torque the heads(the fel pro gaskets need to be seated properly).
Anyways, the car should be driveable late this weekend. My dad is going to make a spacer for the throttle body and get a bracket to mount the throttle cable and then it can be put together and taken out for a drive.
I'll update the thread as soon as we get it running and let you know how it runs. At this point I'm just glad to see it on the ground for the first time since December.
Anyways, the car should be driveable late this weekend. My dad is going to make a spacer for the throttle body and get a bracket to mount the throttle cable and then it can be put together and taken out for a drive.
I'll update the thread as soon as we get it running and let you know how it runs. At this point I'm just glad to see it on the ground for the first time since December.
Originally Posted by TAEnvy
All the car needs now, as far as I know, is a TB spacer to clear the LS7 manifold, it should be driving by this weekend.
What did you do for coolant crossover lines? Use Ls6 type? Sorry for all the questions, just want to be prepared
Thread Starter
On The Tree
Joined: Mar 2006
Posts: 105
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Originally Posted by Stang's Bane
How thick of a spacer? Where can I get one? I am doing something similiar.
What did you do for coolant crossover lines? Use Ls6 type? Sorry for all the questions, just want to be prepared
What did you do for coolant crossover lines? Use Ls6 type? Sorry for all the questions, just want to be prepared
A.) The throttle cable/bell crank hits the manifold under WOT. This is an easy fix as a small (~1/2 in) spacer would allow the throttle to clear perfectly.
B.) A new cable bracket is required because the LS7 manifold has no throttle cable bracket.
C.) The LS7 intake required an extended map sensor harness.
D.) The ETP heads are taller and required longer plug wires. 6.0L truck wires are perfect.
E.) 1-7/8" d-port headers are required with the ls7 heads (different shape exhaust than other ls series motors)
...There may be other changes, but i'm not the one paying for everything
so I can't remember every detail. If you have more questions feel free to ask away.
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Thanks for the help!!
I am running factory LS7 heads and a coil relocation kit so that is taken care of.
I am running a Holley TB and it came with a bracket, still have to see if it works...
I guess I will have to have a fab up a spacer for the TB...
I am running factory LS7 heads and a coil relocation kit so that is taken care of.
I am running a Holley TB and it came with a bracket, still have to see if it works...
I guess I will have to have a fab up a spacer for the TB...
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1-7/8" d-port headers are required with the ls7 heads (different shape exhaust than other ls series motors)
Originally Posted by MonkeyBoneSS
sounds like a nice set up and of couse please keep us posted 
Originally Posted by mxmatt137
After gathering parts and waiting a ton, the "red demon" is finally nearly finished and running. The car is a 2002 z28. m6.
Parts:
LS2 bored to 4.155"
Eagle 4.1" Crank
Compstar 6.125" Rods
JE Custom Pistons
ETP LS7 heads
LS7 manifold
Comp Cams hydraulic 244/248 duration cam (111 lsa)
1-7/8" Kooks Headers
3" ORY
SLP cat-back
17x11" rims all around
Hoosier autocross tires
...obviously, the list can go on and on, but that is all the main things.
We are hoping for around 700 horsepower and 600 torque at the flywheel. I'll post pictures of the motor and build up as soon as I can get them up.
Parts:
LS2 bored to 4.155"
Eagle 4.1" Crank
Compstar 6.125" Rods
JE Custom Pistons
ETP LS7 heads
LS7 manifold
Comp Cams hydraulic 244/248 duration cam (111 lsa)
1-7/8" Kooks Headers
3" ORY
SLP cat-back
17x11" rims all around
Hoosier autocross tires
...obviously, the list can go on and on, but that is all the main things.
We are hoping for around 700 horsepower and 600 torque at the flywheel. I'll post pictures of the motor and build up as soon as I can get them up.
I just finished a similar engine and it's ready for the engine dyno. 4.200" bore, 4.0" stroke = 443" It's a pump gas motor with a hydraulic camshaft and a Wilson billet intake. I think that 700 HP is a little optimistic for a pump gas hydraulic cam but we'll see. I think it will take more compression and a solid roller cam but I could be wrong. I'll post the numbers as soon as I have them. I'd post a pic of the engine if I could be it keeps saying the pick is to large to post... If someone wants to PM me there email address I'll send them the pic if they know how to post it....
On The Tree
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From: Texas / 427ci F1R 1,002 rwhp/928 rwtq
Originally Posted by LSmonster
I just finished a similar engine and it's ready for the engine dyno. 4.200" bore, 4.0" stroke = 443" It's a pump gas motor with a hydraulic camshaft and a Wilson billet intake. I think that 700 HP is a little optimistic for a pump gas hydraulic cam but we'll see. I think it will take more compression and a solid roller cam but I could be wrong. I'll post the numbers as soon as I have them. I'd post a pic of the engine if I could be it keeps saying the pick is to large to post... If someone wants to PM me there email address I'll send them the pic if they know how to post it....