Head Porting?

[Ondonti]

Ahhhhh, Im a bad person

.090+ overbore, huge deshrouding.

We (my machine shop) put in an order for +2 intake and +1 exhaust stainless valves yesterday. Dont see a point going bigger on the exhaust because the stock valve is so much bigger then even a "ported" port.


Anyways, if anyone wants a piece of the action we will find out if they will cut a deal for multiple sets after they fax back an estimate.

im guessing between 240-300 bucks right now. (~20 per valve)

[Wink]

That's not bad. Are they recommending any springs? Or will the stockers work fine?

[Ondonti]

Im not sure yet. Im gonna wait till I have all the parts. I think im just worried if they will bind.

[Frank]

I doubt binding would be an issue unless you changed the amount of lift with that cam you bought. Even then I guess it is all relative. If they do, maybe a conical type spring since they change diameter would have less of a chance to bind. Just a random thought is all.


Frank

[Ondonti]

cams are 278 adv 216 deg @ .050" lift. .450" lift

so thats why im worried about binding.

[Frank]

i figured that was your reason.

[Ondonti]

Im really not sure how to check besides assemble the heads and see if the springs bind up..........

I dont want to have to install springs twice though.

[c2xejk]

Your machine shop should be able to check this during the time they pressure check the springs. Ask them to check how much lift the springs can handle before they bind...

[Frank]

You can do it in much of a similar manner.... just more difficult. They are used to those things. Since you have a cam, tell them that you need springs that can handle that lift. They should be able to find them.


Frank

[Ondonti]

I just did that today lol. He said bring him 2 springs and 2 retainers and we will see if they will take .450" valve lift.


BTW, my valves are going to cost $12 per valves. +2 intake +1 exhaust. My machinist seems worried about what the quality might be. Si valves.