Keeping in mind I want to maintain a reasonable amount of driveability I am seeking a mfg of very high quality cam shafts for my 3.8Ltr GT2. I miss the rumble I grew to love and the power to boot it provided. I base this on my C6 Z06 which was dynoed on a Mustang at 900WHP+ and 850+ FT#. I was somewhat limited on the design as my power adder, a D1SC Cetri blower. Not completely knowledgeable of the limitations related to cams and turbos. I dont want an extreme amount of surging but defintely a noticable amount of extra power to make it wort the inventment.

I dont see much talk of Cams on the site so I may hit a dead -end but willing to listen, learn, and consider the pros and cons.

 

I know switzer makes a set of cams for our cars...They are brand new and not regrinds...

 

https://www.6speedonline.com/forums/...win-turbo.html

 

Are they an OEM grind (design) or different?

 

They are different then oem...They are spec'd for their applications...

 

I looked at Mahle and it seems they have some offerings but I find it too difficult to figure out. Hell I dont even know the specs on the std GT2 camshaft.

 

Here is the OEM profile the duration is probably not correct as the Oem lifter is radiused and the test fixture lifter is square that would reduce the duration 10 degrees or so.
I think it would be a good idea for any one purchasing a cam to at least be provided with the open/close L/C and lift data. I find terms such as harmonic disturbance or distortion misleading. Remember that the inlet centrline changes from retard to advance from 95 to 110 in the ECU so that moves open/close with it.

File c:\Program Files\AudieTech\CPP\tur996.CPP
Lobes I1, E1
Lobe Separation 100.5 Cam Deg.
Checking Height 0.006 Inch
Valve Overlap 95.9 Crank Deg.

Intake Exhaust
------------------- -------------------
Centerline 95.00 ATDC 106.00 BTDC
Open 51.61 BTDC 72.54 BBDC
Close 65.34 ABDC 44.26 ATDC
Duration 297.0 Crank Deg. 296.8 Crank De
Area 32.77 Inch Deg. 32.76 Inch Deg
Lash 0.0000 Inch 0.0000 Inch
Rocker Ratio 1.00 1.00
Peak Cam Lift 0.40255 Inch 0.40259 Inch
Peak Valve Lift 0.40255 Inch 0.40259 Inch
Lift @ TDC 0.1537 Inch 0.0974 Inch
-------------------------------------------------------------

Spec. Value
---------------- -----------------------------------------
Checking Height 0.050 Inch
Valve Overlap 29.8 Crank Deg.

Intake Exhaust
------------------- -------------------
Centerline 95.00 ATDC 106.00 BTDC
Open 20.53 BTDC 41.51 BBDC
Close 30.41 ABDC 9.29 ATDC
Duration 230.9 Crank Deg. 230.8 Crank De
Area 32.18 Inch Deg. 32.21 Inch Deg
Lash 0.0000 Inch 0.0000 Inch
Rocker Ratio 1.00 1.00
Peak Cam Lift 0.40255 Inch 0.40259 Inch
Peak Valve Lift 0.40255 Inch 0.40259 Inch
Lift @ TDC 0.1537 Inch 0.0974 Inch
-------------------------------------------------------------

Spec. Value
---------------- -----------------------------------------
Checking Height 0.200 Inch
Valve Overlap -31.0 Crank Deg.

Intake Exhaust
------------------- -------------------
Centerline 95.00 ATDC 106.00 BTDC
Open 9.90 ATDC 11.14 BBDC
Close 0.00 BBDC 21.13 BTDC
Duration 170.1 Crank Deg. 170.0 Crank De
Area 28.38 Inch Deg. 28.37 Inch Deg
Lash 0.0000 Inch 0.0000 Inch
Rocker Ratio 1.00 1.00
Peak Cam Lift 0.40255 Inch 0.40259 Inch
Peak Valve Lift 0.40255 Inch 0.40259 Inch
Lift @ TDC 0.1537 Inch 0.0974 Inch

 

Reason is that with a factory turbo car you can usually add power substantially without going internal. Especially with the M64.

The Vette being N/A LS7 to make more power you have to do intake/exhaust/cam/dyno tune. Then you can add a power adder like your Procharger and swap to a blower cam and retune, ect.

How come you didn't do an F1 on the Z06? I ran a Vortech on my GTO then went to a TVS2300. She ran 9.70s with that and a little spray to cool things off. 10.10s-10.20s blower only.