Natural Aspirations

I have decided to start a thread with some cam Spec's I have.
Feel free to add your own or PM ME to correct mine

Please NO COMMENTS Keep it short and easy to read


Skunk2 Stage 2
Intake:
PRIMARY: DURATION 215º LIFT .366"(9.3mm)
Vtec: DURATION @1mm 266º LIFT @ 0" lash: 0.485(12.3mm)
OPENING @1mm: 37º BTDC
CLOSING @1mm: 49º ABDC


Exhaust:
PRIMARY: DURATION 216º LIFT .358"(9.1mm)
Vtec: DURATION @1mm 262º LIFT @ 0" lash: 0.466(11.8mm)
OPENING @1mm: 61º BTDC
CLOSING @1mm: 21º ABDC
PRIMARY

VALVE SETTINGS
Lash the valves to stock settings on a cold motor
INTAKE: 0.007in.
EXHAUST: 0.008in.

Skunk2 Stage 3

INTAKE: DURATION @1mm 270º LIFT @ 0" lash: 0.504(12.8mm)
OPENING @1mm: 35º BTDC
CLOSING @1mm: 52º ABDC
PRIMARY

EXHAUST: DURATION @1mm 279º LIFT @ 0" lash: 0.465(11.8mm)
OPENING @1mm: 62º BTDC
CLOSING @1mm: 32º ABDC
PRIMARY

VALVE SETTINGS
Lash the valves to stock settings on a cold motor
INTAKE: 0.007in.
EXHAUST: 0.008in.

Pro Series

Pro 1

Camshaft Specifications:
Intake:264 °/12.6 @1mm /0.000 ” lash

Exhaust:264 °/11.9 @1mm /0.000 ” lash

Tappet Clearance:
Intake:0.007 ” ((cold)
Exhaust:0.008 ” ((cold)
Other Recommended Camshaft Specifications:
Intake:
Opening:24 ° BTDC
Peak Lift:98 °ATDC
Closing:50 °ABDC

Exhaust:
Opening:56 ° BBDC
Peak Lift:105 ° BTDC
Closing:17 °ATDC

Pro 2

Camshaft Specifications:
Intake:
270 °/12.8 @1mm /0.000 ” lash
Exhaust:
276 °/12.0 @1mm /0.000 ” lash


Tappet Clearance:
Intake:0.007 ” ((cold)
Exhaust:0.008 ” ((cold)
Other Recommended Camshaft Specifications:
Intake:
Opening:31 ° BTDC
Peak Lift:99 °ATDC
Closing:46 °ABDC

Exhaust:
Opening:58 ° BBDC
Peak Lift:106 ° BTDC
Closing:25 °ATDC


Pro 3

Camshaft Specifications:
Intake:
277 °/13 @1mm /0.000 ” lash
Exhaust:
284 °/12.4 @1mm /0.000 ” lash


Tappet Clearance:
Intake:0.007 ” ((cold)
Exhaust:0.008 ” ((cold)
Other Recommended Camshaft Specifications:
Intake:
Opening:??° BTDC
Peak Lift:100 °ATDC
Closing:??°ABDC

Exhaust:
Opening:??° BBDC
Peak Lift:104 ° BTDC
Closing:??°ATDC




Modified by Natural Aspirations at 11:31 AM 5/27/2007

7rrivera7

iTrader: (1)

Any specs on BC3+'s?

Echo7847

Bc3+ From the card that came with mine:

In: 1mm open 25 degrees BTDC/45 degrees ABDC
Duration 296 degrees 11.4mm valve lift (full lift @ 100 degrees on crank ATDC)

Ex: 1mm open 45 degrees BBDC/ 20 degrees ATDC
Duration 290 degrees 11.8mm valve life (full lift @ 102.5 degrees on crank BTDC)

Cold lash before startup .008in/.009ex

1New_Life6

Thank u sooo much!!! Very helpful & needed ASAP!

Fixxe2

thread digging...

Lost my camcard for my skunk2stage2, but google got me here

But, the original post got a few things wrong...
Took me a few moments until i found what it was..

Skunk2 Stage2 and stage3 cams.
Exhaus opens BBDC not BTDC, thats just 180degrees wrong....
Exhaust closes ATDC not ABDC, thats to, 180degrees wrong....

vtecmaster85

i have some GSC N2 cams that were degreed and got real numbers. specs as advertised are: IN; 12mm 266 @1mm
EX; 11.5mm 258 @1mm

spec when degreed are:
IN; .484 inches(12.29mm) 264 @.050
EX; .464 inches(11.78mm)260 @.050




custom crower cams.
IN; .468 inches 268 dur LOBE LIFT .302
EX; .468 inches 260 dur LOBE LIFT .302

degreed specs

IN; .471 inches(11.96mm) 267 dur @.050
EX; .475 inches(12.06mm) 260 dur @.050


So the GSC ended up being bigger than people were thinking. they have a good amount of duration and nice lift on both IN and EX cams. the crowers are almost spot on, only one degree off on the intake side. i dont mind the extra exhaust lift myself!