G-Force 402 LS2 D-1 Procharger C6 Results!
06-02-2006, 11:47 AM
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G-Force 402 LS2 D-1 Procharger C6 Results! It's been a long time coming for this project. This was one of the first C6's off of the lot in Houston. As soon as he started it we began figuring out which direction we wanted to head. After tossing around a couple of ideas, we came up with an LS2-Based stroker and big boost.
Not a few months later we had a brand new low-compression LME 402 with AFR 225 heads sitting in the shop. We also had a fully built transmission and rear-end as well as C5 half-shafts and a new clutch. We spent a week putting the car together making sure that everything was perfect.
After the initial fire-up it didn't take long to realize that the clutch was not disengaging. The clutch we were sent was not built right and would not disengage. Just seconds after that the engine started to rod knock and the oil pressure took a serious dive. We put the car up in the air and pulled the oil pan to find that the clutch had pushed the crankshaft forward and had destroyed the thrust bearing in the block. So we pulled the engine out.
A few weeks later we had another LME 402 LS2 shortblock back in the shop. At this point we were so busy with customer cars we didn't have any time to work on the car, so it went back to our house and sat in the garage. So the engine sat.
After a few weeks of down time with the project it was time to start on it again. We trailered the car back to the shop and started over from square one. In went the new engine and the D-1 Procharger.
We put the car all back together complete with gauges and fuel system, and get ready to put her on the dyno. The first pull netted 600 RWHP at only 2 PSI. But something still wasn't right. The transmission was popping out of gears. So we stopped.
We took the transmission back out and sent it to Joe @ T56Rebuilds. He took it all apart for us and did some investigation. Turns out the sliders in a C6 transmission are .090" thicker than the sliders in a C5 Transmission. Well our C6 transmission had C5 sliders in it, so the transmission wouldn't stay in gear. We also were told we needed to change the pilot bearing in the crankshaft as well. So we wait a few more weeks for the parts to get to Joe.
Now fast-forward to yesterday. We get the car all back together and decide to put it on the dyno one more time.
Here's a rundown of the setup:
8.5:1 LME LS2 402
AFR 225 heads ported by LME
Custom GForce/LME Blower Cam
D-1 Procharger @ 7 PSI
MSD Boost-A-Pump
60 lb/hr Fuel Injectors
Kooks 1 7/8 Headers
Kooks Off-Road X-Pipe
Corsa Cat-Back Exhaust
We talked to ProCharger this morning and they are working on an 8-Rib Pulley setup. Once that is ready we are going to turn the boost up and shoot for 800RWHP on 93 Octane.
Not a few months later we had a brand new low-compression LME 402 with AFR 225 heads sitting in the shop. We also had a fully built transmission and rear-end as well as C5 half-shafts and a new clutch. We spent a week putting the car together making sure that everything was perfect.
After the initial fire-up it didn't take long to realize that the clutch was not disengaging. The clutch we were sent was not built right and would not disengage. Just seconds after that the engine started to rod knock and the oil pressure took a serious dive. We put the car up in the air and pulled the oil pan to find that the clutch had pushed the crankshaft forward and had destroyed the thrust bearing in the block. So we pulled the engine out.
A few weeks later we had another LME 402 LS2 shortblock back in the shop. At this point we were so busy with customer cars we didn't have any time to work on the car, so it went back to our house and sat in the garage. So the engine sat.
After a few weeks of down time with the project it was time to start on it again. We trailered the car back to the shop and started over from square one. In went the new engine and the D-1 Procharger.
We put the car all back together complete with gauges and fuel system, and get ready to put her on the dyno. The first pull netted 600 RWHP at only 2 PSI. But something still wasn't right. The transmission was popping out of gears. So we stopped.
We took the transmission back out and sent it to Joe @ T56Rebuilds. He took it all apart for us and did some investigation. Turns out the sliders in a C6 transmission are .090" thicker than the sliders in a C5 Transmission. Well our C6 transmission had C5 sliders in it, so the transmission wouldn't stay in gear. We also were told we needed to change the pilot bearing in the crankshaft as well. So we wait a few more weeks for the parts to get to Joe.
Now fast-forward to yesterday. We get the car all back together and decide to put it on the dyno one more time.
Here's a rundown of the setup:
8.5:1 LME LS2 402
AFR 225 heads ported by LME
Custom GForce/LME Blower Cam
D-1 Procharger @ 7 PSI
MSD Boost-A-Pump
60 lb/hr Fuel Injectors
Kooks 1 7/8 Headers
Kooks Off-Road X-Pipe
Corsa Cat-Back Exhaust
We talked to ProCharger this morning and they are working on an 8-Rib Pulley setup. Once that is ready we are going to turn the boost up and shoot for 800RWHP on 93 Octane.
06-02-2006, 12:46 PM
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It's a turd.... LOL J/K!! Mike, Jay, Franco, and Johnathan have dedicated alot of frustrating hours to JD's car. The hardwork has finally paid off. The car sounds like a monster, and it'll be real sweet when the 8 rib setup goes on.... 
06-02-2006, 01:05 PM
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Originally Posted by beardWS6
Sounds like he is getting the Vette ready to rock. He has waited along time. Sweet numbers, and good luck!!
We called and told him what it made and he can't wait for me to bring it home tonight. Of course I need to put a few miles on her before I give it to him.
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06-02-2006, 02:38 PM
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Man, that is really good to see. I remember how pissed everyone was when that clutch took a dump (bad day to be anywhere near G-Force and I happened to be there for some damned reason).
My project has been sidetracked by that whole "totalled my daily driver" thing. Turns out Newton was right: two objects cannot occupy the same space at the same time. Now that I have a new daily driver, I can start saving for upgrades on the BCoD, instead of spending money on gas and repairs.
Congrats to everyone at G-Force!
-Mike
My project has been sidetracked by that whole "totalled my daily driver" thing. Turns out Newton was right: two objects cannot occupy the same space at the same time. Now that I have a new daily driver, I can start saving for upgrades on the BCoD, instead of spending money on gas and repairs.
Congrats to everyone at G-Force!
-Mike
06-02-2006, 03:43 PM
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Originally Posted by chupr0kabra
Man, that is really good to see. I remember how pissed everyone was when that clutch took a dump (bad day to be anywhere near G-Force and I happened to be there for some damned reason).
My project has been sidetracked by that whole "totalled my daily driver" thing. Turns out Newton was right: two objects cannot occupy the same space at the same time. Now that I have a new daily driver, I can start saving for upgrades on the BCoD, instead of spending money on gas and repairs.
Congrats to everyone at G-Force!
-Mike
My project has been sidetracked by that whole "totalled my daily driver" thing. Turns out Newton was right: two objects cannot occupy the same space at the same time. Now that I have a new daily driver, I can start saving for upgrades on the BCoD, instead of spending money on gas and repairs.
Congrats to everyone at G-Force!
-Mike
06-02-2006, 03:56 PM
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Nice numbers guys. 7# on 8.5 compression you should be able to run quite a bit of timing. Tony is that making you want that other pulley......
Originally Posted by Mike TexaSS
This project is a year and a half in the making.
We called and told him what it made and he can't wait for me to bring it home tonight. Of course I need to put a few miles on her before I give it to him.
We called and told him what it made and he can't wait for me to bring it home tonight. Of course I need to put a few miles on her before I give it to him.
06-02-2006, 04:11 PM
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Originally Posted by ESR
Nice numbers guys. 7# on 8.5 compression you should be able to run quite a bit of timing.
Hmm maybe more than a stock C6
