I found a list of the original specs but lost it and I can't find it again.
If someone could hook me up, I would greatly appreciate it.
I need:
int/exh duration at .050, int/exh max valve lift, lobe center line, IVO, IVC, EVO, EVC at .050, and int/exh center line.
Thanks!
I'm playing around with Desktop Dyno and having issues with accurate numbers.


http://www.cardomain.com/id/Gerkn

185*/185* @ 0.050" (int/exh)
0.263"/0.263" lobe lift
0.421"/0.421" w/ 1.6 rockers (advertised stock ratio, actual works out to be 1.54, per Event [long time JBO Member])
Int.C/L 108*
lobe centers 112*
Note:Following figures calculated from Desktop Dyno. If you enter the above info in the on Engine Math button/Cam Math, it will automatically calculate the follow information.
IVO (BTDC)-15.5
IVC (ABDC) 20.5
EVO (BBDC) 28.5
EVC (ATDC) -23.5

Thanks again MadJack, you're awesome!


http://www.cardomain.com/id/Gerkn

Hay, after updating the cam I'm getting unrealistic numbers now...
My setup used to be at 121hp and run 16.8sec with mods, which is what I ran at the track last time with my setup.
Now after updating the cam specs, its making 98hp and running 18.2sec...
Stock cam, large-tube headers with mufflers, stock ports/valves, stock valve dia, SFI manifold type, etc.
Any idea what I did wrong? The only thing I'm not 100% sure is accurate is the stock head flow I have set at 400cfm @ 1.5inHg.
I have the transmission info accurate in Drag 2003, summer tires, weight, wheel base, etc is all accurate... except for my drag coefficient (.31) and % on driving wheels (63.
I also found it weird that we have -39* valve overlap?


http://www.cardomain.com/id/Gerkn

I'm using basic. On mine, for my stock set-up, I use H.P. Manifolds and Mufflers, splayed valve head with stock ports and valves and 1.730"/1.457" valve diameters. I tried the SFI manifold, but never got accurate results. I tried the single plane high flow and found the results needed. As for the header, use small tube headers, unless you have something bigger than a 1.5" primary tube header.

I'm running the pacesetter 4-1 header, so I tried changing to small-tube open exhaust and I changed my manifold to single-plane high-flow and it's a little better but the setup is still about 1sec slow in drag2003. IDK, thanks for your help anyway.


http://www.cardomain.com/id/Gerkn

Here is a thread I made awhile back including stock cam info in case u need anything else.
http://www.j-body.org/forums/read.php?f=2&i=413352&t=404759#413352

So trying to figure this all, these are the specs you guys provided. Any more ideas as to whats more accurate or whats wrong with my setup...?

MadJack
Lift:
Intake Exhaust
@lobe @lobe
0.263" 0.263"
Duration @ .050"
Intake Exhaust
185* 185*
Intake Centerline
108*
lobe centers
112*
.050" Valve Timing:
IVO (BTDC) - IVC (ABDC) - EVO (BBDC) - EVC (ATDC)
-15.5* 20.5* 28.5* -23.5*

Mrs Jazer
Lift:
Intake Exhaust
@lobe @lobe
.263" .263"
Valve overlap: 41°
Duration @ .050"
Intake Exhaust
185° 185°
Intake Centerline - Exhaust Centerline
116° - 110°
.050" Valve Timing:
Intake Opens - Intake Closes - Exhaust Opens - Exhaust Closes
19°ATC 24°ABC 22°BBC 17°BTC

And here is what Desktop Dyno is forcing me to use while trying to enter in the specs. If I try to set the timing to Jazer's specs it changes my duration automatically to a really high number.

Duration @ .050"
Intake Exhaust
185*, 185*
Lift:
Intake Exhaust
@lobe @lobe
0.263" 0.263"
Valve overlap: -39*
Intake Centerline - exhaust Centerline
108* - 116*
lobe centers
112*
.050" Valve Timing:
IVO (BTDC) - IVC (ABDC) - EVO (BBDC) - EVC (ATDC)
-15.5* 20.5* 28.5* -23.5*

Forced auto calc. Duration @ .050" with Jazer's timing:
intake 223* exhaust 219*
Valve Overlap 36*


http://www.cardomain.com/id/Gerkn