Wicked Weasel @ ECS
01-15-2008, 01:55 PM
I am sure that many of the general people have never seen an engine build so we decided that we would document my LS7 build for my 01 C5. We are going to do our best to show pictures and explain what we are doing and/or why we decided to go one direction over another.
I will continue to update this thread on the progress of the build, but you can follow the entire build which includes commentary, pictures and research at
http://www.ecsracing.com/ecsracing/forumdisplay.php?f=77
Some Background
My last track day at WGI my timing chain went and it was time to make a decision on what to do with my car. My ECS H/C 346 had over 3 years of road racing and over 50 1/4 mile passes. I was not happy that a double roller broke causing me to make a decision on a new setup, but such is life and so the decision was to either try and fix what I have or look into a new engine. A new engine that sounds so nice (that was a quick decision :D )
Originally we were going to install a 402 in my car. ECS has proven success with this setup in different street applications, but ECS was concerned about an engine that is almost completely dedicated to Road Race Tracks (15-20 track days per year) surviving with a standard oil system so they started to investigate Dry Sump systems (there is a write up on Dry Sump systems at http://www.ecsracing.com/ecsracing/showthread.php?t=442 ).
At PRI this year Doug@ECS found a ton of valuable information on Dry Sump systems, unfortunately every system that he found would mean that I would lose the A/C which I was not willing to do (it is still taken on the street in the summer and I wanted A/C). Then out of no where thrown on the table was the LS7 setup. GM has already developed a Dry sump with the LS7 setup and we all know there is plenty of power on tap with a 427. I could also keep my A/C so we looked into it further.
Sure the GM LS7 dry sump solution is probably not as good as some of the aftermarket systems that Doug looked at, but after doing some research I personally felt the GM solution (with a few mods) would be more than adequate for what I do. Of course only time will tell if this is true or not, but many LS7 owners are happy with their cars on the Track.
Right now we are just starting to get parts in for the build. Here are some teaser pics (more at ecsracing) which should get your blood pumping:
7.0L BABY - Front
http://www.ecsracing.com/Pictures/427build/block_front.JPG
Where are we going to fine Pistons for this :D
http://www.ecsracing.com/Pictures/427build/block_side.JPG
Crank
http://www.ecsracing.com/Pictures/427build/crank_top.JPG
Oil pan - dont need much with Dry sump
http://www.ecsracing.com/Pictures/427build/oil_pan.JPG
I will continue to update this thread on the progress of the build, but you can follow the entire build which includes commentary, pictures and research at
http://www.ecsracing.com/ecsracing/forumdisplay.php?f=77
Some Background
My last track day at WGI my timing chain went and it was time to make a decision on what to do with my car. My ECS H/C 346 had over 3 years of road racing and over 50 1/4 mile passes. I was not happy that a double roller broke causing me to make a decision on a new setup, but such is life and so the decision was to either try and fix what I have or look into a new engine. A new engine that sounds so nice (that was a quick decision :D )
Originally we were going to install a 402 in my car. ECS has proven success with this setup in different street applications, but ECS was concerned about an engine that is almost completely dedicated to Road Race Tracks (15-20 track days per year) surviving with a standard oil system so they started to investigate Dry Sump systems (there is a write up on Dry Sump systems at http://www.ecsracing.com/ecsracing/showthread.php?t=442 ).
At PRI this year Doug@ECS found a ton of valuable information on Dry Sump systems, unfortunately every system that he found would mean that I would lose the A/C which I was not willing to do (it is still taken on the street in the summer and I wanted A/C). Then out of no where thrown on the table was the LS7 setup. GM has already developed a Dry sump with the LS7 setup and we all know there is plenty of power on tap with a 427. I could also keep my A/C so we looked into it further.
Sure the GM LS7 dry sump solution is probably not as good as some of the aftermarket systems that Doug looked at, but after doing some research I personally felt the GM solution (with a few mods) would be more than adequate for what I do. Of course only time will tell if this is true or not, but many LS7 owners are happy with their cars on the Track.
Right now we are just starting to get parts in for the build. Here are some teaser pics (more at ecsracing) which should get your blood pumping:
7.0L BABY - Front
http://www.ecsracing.com/Pictures/427build/block_front.JPG
Where are we going to fine Pistons for this :D
http://www.ecsracing.com/Pictures/427build/block_side.JPG
Crank
http://www.ecsracing.com/Pictures/427build/crank_top.JPG
Oil pan - dont need much with Dry sump
http://www.ecsracing.com/Pictures/427build/oil_pan.JPG