Does anyone know the following stock cam specifications for a 1989 GTA 5.0 litre 5 speed:

Duration Advertised
Duration at .050"
Value Lift
Lobe Lift
Lobe Seperation Angle

I would like to compare the stock values to the cam in my car.

 

https://www.thirdgen.org/newdesign/tech/mods3.shtml

Look in the tech articles.

 

Thank you for directing me to this article. I am trying to learn more about cams. Does anyone know where the article is that Paul Huryk refers to "In another section,I explained how cams work,"? Also, excuss my ignorance but I still do not see the stock values in this article. I see all the values of cams offered by Comp, Crane and others but not the stock values. Maybe the first row by each manufacturer is close to the stock value?

 

Try this instead:

https://www.thirdgen.org/newdesign/tech/techdb.shtml
Near the bottom.

 

Thank you for this, it provides more information. Here is a website that provides lots of information for people trying to learn about camshaft specifications.

http://www.holley.com/HiOctn/TechSer...IECCTech2.html

 

The top of the specifications site indicates if anyone has any additional information to add to let Third Gen know. I E-mailed GM Performance Parts to find out information on the stock Cam for my car and this was their response.

Thank you for visiting the Performance Parts website.

Thank you for your email. We consulted with our Engineering
Technicians, who searched their database and found that GM camshaft
10066049 has the following specifications:

-CENTERLINE 117 DEGREES,
-THIS CAM HAS A FUEL PUMP LOBE,
-LIFT .415 INTAKE, .430 EXHAUST,
- DURATION AT ZERO LASH 327 DEG EXH, 322 INTAKE
-OVERLAP 84 DEGREES

We hope this information if of assistance to you.

Thank you for your inquiry.
Regards,
Goodwrench Internet Response Team