Livernois C6 Head Swap Dyno Numbers
 

Below is a graph of the Livernois Motorsports C6 shop car with the only mod being stock heads ported by Livernois.

http://www.leblancfamily.com/rick6/headswapdyno1.jpg

For photos of the swap and before and after shots of the heads, please go Here


-Rick

What were the corrected numbers?

I believe corrected numbers read higher, right? I dunno..

-Rick

That is a 35 rwhp and rwtq gain! Pretty impressive. Slap a cam in that thing.

Unless the outside temp dropped by 10-15degs between the two runs.

Nice gains! I agree, install a new cam and see what it picks up. :D

Not bad with no tuning either.

329.5 is weak for a m6 car and high for an a4 car....
what trans?????????
sig says cam/headers/x pipe........

The sig is my C5, which has heads, cam, headers, x-pipe. The C6 is stock except for Livernois ported heads.

The C6 is an MN6 car, but those are actual "uncorrected" numbers.

The correction factor on the Dyno Jet takes relative humidity, intake air temperature, and absolute pressure into consideration and what we've seen is the IAT sensor not reading correctly and throwing off the data. For that reason, we run in "uncorrected" to make sure you the people don't get misled. If we run SAE correction, the numbers are higher, but they still show an approximate gain of 35 rwhp. The temperature on run one was 75 degrees, barometer was 29.7, and humidity was 25%. The second run was 78 degrees, barometer was 29.7 and relative humidity was 30%. We consider this a very close comparison and no matter how you look at it, it picked up power. If we looked at the Dyno Jet correction factors we would have noticed IAT values greatly different between runs. All values seen above were taken from our weather station.

-Rick

That is winpep. On the scroll tab at the top of the graph, make it SAE corrected.

That is how dynos are posted here with out being flamed for STD or Uncorrected numbers. Numerous shops have the Air temp sensor placed so that they do not need to do this.

Where the two different runs done in different gears?

Nice numbers, but your before dyno is way low for all the C6 dynos posted to date. I'm very skeptical that your heads gave you that much increase. 2002 and up Z06's don't see 35rwhp/35rwtq with just head porting/polishing(unless a cam swap has been done).

Todd

Both runs were done in 4th gear, the car definitely feels a ton faster!

No cam swap yet since there is no tuning software. We did the valves and springs though.

My C5 picked up 100rwhp with Livernois stage 1 LS1 ported heads, 224/228 114 cam, longtubes, x-pipe and blackwing.

-Rick

actually his numbers are only a little on the low side. ive seen only 330s and 340 at the wheels for two C6s so far. both manuals.

Damn. Does that mean the new C6's are only putting down about 20 more RWHP than the best LS1 f-bodies?

I find that hard to believe.

Me too considering that there are at least 5 bone stock manual C6s out there that have dyno'd in the 355+ rwhp/rwtq range so far.

same here

well some cars are duds, some havent be broken in yet, and if you do the math they should only be in the 330-350 range with a 15% driveline loss. so yeah some of them will be low

BTW...this car has 50 miles on it. It's not even broken in yet. I've seen the heads in person. They look very nice.

My C5 only made 295 rwhp on that dyno stock.

-Rick