Hi guys, I have a 350 rocket 1979, cast ID code: 3A, casting number: 554964, please guide me about stock camshaft specs , such as degrees of open/close for intake/exhaust valve.
Please guideeee me.

 

That came out of a Cadillac....the intake gives that away.

 

Thank you, I search by part# 562299 , but don't find out more information for my camshaft, I want know exactly degrees of open and close for intake and exhaust valve .
Do you know this details??

 

Its listed under Duration. 250 degrees intake valve open, 264 degrees exhaust valve open. Valves are lifted .400" off the valve seat. Those are the details you asked for.

 

I mean, how many degrees before top dead center(TDC) opens the intake valve??
How many degrees after bottom dead center(BDC) close intake valve?? and exhaust valve too?
For example Chevy 350 camshaft :
Intake valve : 20 degree BTDC open.
48 degree ABDC close.

 

This is all the info I have about that cam. You might be able to derive valve open / close events from this information.

.400"/.400" lift
186°/202° duration @ .050"
250°/264° advertised duration
108° intake centerline
109° LSA

 

Calculating from those advertised duration numbers that Kenneth posted, and assuming the cam is installed straight-up (meaning no advance or retard), gives the following:
Intake open 16° BTC
Intake close 54° ABC
Exhaust open 61° BBC
Exhaust close 23° ATC
Intake center 109°
Exhaust center 109°
Overlap 39°

 

It is pathetic and something else should be used. Even the generic 204/214 cam is a good upgrade.

 

Thanks guyssssssss.

 

I 100% agree. When I rebuilt the 350 in my 1970 Supreme back in 1982 I used a Melling .435 lift, 204 duration cam and the engine was a lot more powerful than before.