Hey guys I've been trying to decide on a cam shaft for my 1990 ish 300 motor. Im guessing A have about 150k on it now.
Anyway, it in my 86 f150 with and np435 3.55 gears and 35" tires. It is an absolutely great combo! But like everyone else, I want a little more. My two complaints are
1) there is a dead spot when I start off. If the rpms fall slightly below 1,000, it totally falls on its face.
I would assume this is because of the 4 degree retarded cam?
2) I wish it had a little more for those 4th gear hills. When I load up with camping gear and the dirtbikes I'm weighing in at about 6k
On the highway I'm at 2,250 rpm @65 and 2,500 @70ish.
So the question is do I go with the smaller 511 cam? Or the 901?
Can I advance the 901??
Anyway, it in my 86 f150 with and np435 3.55 gears and 35" tires. It is an absolutely great combo! But like everyone else, I want a little more. My two complaints are
1) there is a dead spot when I start off. If the rpms fall slightly below 1,000, it totally falls on its face.
I would assume this is because of the 4 degree retarded cam?
2) I wish it had a little more for those 4th gear hills. When I load up with camping gear and the dirtbikes I'm weighing in at about 6k
On the highway I'm at 2,250 rpm @65 and 2,500 @70ish.
So the question is do I go with the smaller 511 cam? Or the 901?
Can I advance the 901??