Help me please!!! 180 ° degrees cams
 

hi!..i have a big problem...i have racing cams whith 178° dregrees from open intake to closed exst..
do you know setup data to install this cams?????????

please help me..

you might get better results in the engine rebuild forum, maybe a moderator can move it for you.

Cyber,
Porsche cams are specified from opening at 1.0mm to closing at 1.0mm. In other words the valve has opened 1.0mm. At this point it is specified. The same for closing.
Early cams sometimes were specified at the absolute opening, that is just as the valve began to open.
The difference in standards added 46 degrees to the duration using the old absolute opening versus the newer 1.0mm opening.
So my qustion is what standard are you using to quote these cams?
Second are there any part numbers?