Hey, I have a performance cam that I'm dropping in soon during my build up on my 2.8 and I was wondering if I could use the 1.6 Ratio rockers with it or if it would be too extreme. My cam specs are:

Thanks!

*Edited for spelling

[This message has been edited by Freshj (edited 03-19-2002).]

A rule of thumb for ideal valve lift that I came across states that for an engine that is not going to be raced, intake valve lift should be no more than 25% the diameter of the valve. The article did not say anything about exhaust valve lift. The link I'm thinking about is in an old post.

That means for the 2.8L heads .430 is ideal.

You could use 1.52 ratio roller tip rockers instead.

Using 1.6 ratio rockers increases the valve lift to 0.448 intake and 0.472 exhaust.

Using 1.52 ratio rockers increases the valve lift to 0.426 intake and 0.448 exhaust.

You can have too much lift. A radical setup will intefere with the operation of the MAP sensor - low manifold vacuum at idle. IMO, the valve lift may be a bit high.

Regardless of what you do, I recommend you use new valve springs - like a good double spring. Also, it doesn't hurt to check for coil bind.

Who made this cam?

What are your expectations?

The cam is a Wolverine/Blue Racer cam. It is Identical to the Phase 2 cam that ARI offers. They say is a perfect match to their 3.1 Stroker which I'm also installing. The donor car that its going into has the Fierostore performace heads and 1.6 Ratio rockers. Thats why I wanted to know if it would conflict. Looks like I'll need to find someone to trade with. I don't expect much. I figure if I keep My expectations low, the engine will suprise the crap outta me.

[This message has been edited by Freshj (edited 03-20-2002).]