LS7 Cylinder Heads from West Coast Cylinder Heads
#42
Alright guys, here's the results I have for our LS7. All the numbers I have currently are non weather corrected aside from the last pull I just did today, and the pull with the LG Motorsports exhaust, I have the weather corrected print out for those. I'll ask the customer for the other cover sheets so I can do a more complete break down of the gains.
2008 Chevy Corvette Z06
Stock: 422rwhp/403rwtq
Cam and Headers Only: 517rwhp/467rwtq
Heads: 518rwhp/467rwtq *Note, had 12rwhp gain across the board until 6000rpm, then data logs showed massive intake restriction.
LG Motorsports G2 Cat Back: 545rwhp/491rwtq
FAST 102mm with 102mm TB: 552rwhp/499rwtq
Now the actual weather corrected numbers today where 573.8rwhp and 513.2rwtq. The weather corrected numbers for the Cat Back was 560.xrwhp and 498rwtq. All tests were done on our Mustang MD-1100SE dyno and on the same car.
2008 Chevy Corvette Z06
Stock: 422rwhp/403rwtq
Cam and Headers Only: 517rwhp/467rwtq
Heads: 518rwhp/467rwtq *Note, had 12rwhp gain across the board until 6000rpm, then data logs showed massive intake restriction.
LG Motorsports G2 Cat Back: 545rwhp/491rwtq
FAST 102mm with 102mm TB: 552rwhp/499rwtq
Now the actual weather corrected numbers today where 573.8rwhp and 513.2rwtq. The weather corrected numbers for the Cat Back was 560.xrwhp and 498rwtq. All tests were done on our Mustang MD-1100SE dyno and on the same car.
#44
The heads were stock, we sent them to Richard at West Coast Cylinder Heads, where he cleaned up the exhaust porting, milled them, and replaced the valves/valve job.
#48
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Almost 30rwhp/rwtq from a catback swap even with the stock mufflers being high flow units??
#49
The entire package for this customer, including the twin disc clutch that doesn't even add horespower still netted about 150rwhp gain, naturally aspirated. With the cost figured into it, the package price per horsepower is still a very low $63 per horsepower.
http://www.youtube.com/watch?v=gLLD-EM1X1I
Last edited by Tuner@Straightline; 12-16-2009 at 11:20 AM.