[24kilo]

Sounds most like a timing issue, might be a coulpe things,make sure your cam and crank are lined tdc,I've found the easiest way is to put it on TDC on the Flywheel window and then check the cam, That way YOU know that it's in. That line the mark to the mark on the pullys has bit me too many times, Check Distributor timing might have moved it a tooth either way, the oil pump pully runs your Dizzy , Also check your Vac lines and sensors wires, they might have got knocked off or somethings loose when you changed the cam out. Hope this helps. Later