Questions on the OZ 250 head and plans for my 200

[Anonymous]

I was considering going with a Stage II build-up as suggested by the Tech section, but I'm starting to become attracted to the Oz 250 cylinder head. I've heard nothing but good news about it! One site I read even boasted a 40% increase in power with a 2bbl carb, Oz head, and headers. That got me very excited, because it's very similar to the setup I've been thinking of lately:

- Oz 250 head
- 2bbl carb (not sure what kind -- suggestions?)
- 6-into-2 headers
- Flowmaster mufflers
- Hydraulic cam

* I'm also considering going with the Tempo 2.3L pistons after gaining some more intel on them, and a future ignition/distributor upgrade.

Here are my questions:

1.) Where can I pick up an Oz 250 head, and how much do they usually go for? I tried researching on eBay, but had no luck.

2.) How much should I expect to pay a machine shop to work it over?

3.) What work would the shop need to do? (Asuming there is no critical damage done.)

4.) What carb should I go with? Should I go with with 2'' dual pipes, or get bigger with 2.25'' or 2.5'' dual pipes?

5.) What does Clifford's port divider do? (I think I have an idea, but I just want to make sure.)

6.) How do I decide what push rods I need?


Thanks for helping me out! Answers to any and all of these questions is appreciated.

 

[Anlushac11]

8)

Look for the post not long ago by Mustangaroo. With very few modifiations on his 200 he went from about 67rwhp to 105 rwhp. After he put a bigger carb on the engine tested at 107rwhp. No cam, no big carb at first, no big compression increase.

So yes there is a major increase in breathing. So if you get the Oz head, Add a cam, header, a good size carb for the engine, a high energy ignition, and mill the head to raise compression and you have a nice little motor.

 

[Anonymous]

He's got a lot posted on the Oz 250. I'm gonna have to go through those and try to learn a thing or two.

On milling the head: how much should it be milled? Any idea what the compression ratio would be?

 

[Anlushac11]

8) You should have the head cc'd first. It is a way of measuring the size of the combustion chamber.

Most of the guys have had .050" to .060" removed. This should raise compression by about 1 point, ergo 8.5:1 to 9.5:1

 

[Anonymous]

Anlushac11 I can supply you with a 2V head. PM me.

 

[Anonymous]

Hi KC21,

Have you considered an Argentine ME or an SP?

http://fordsix.com/forum/viewtopic.php?t=1734

DB

 

[Anlushac11]

8)

I have a Oz 250-2v with the intake converted to a Holley 4bbl. I have to get it back from my dads in Florida. My rebuild is currently on hold since it is winter and I dont have a garage.

 

[Anonymous]

Sorry Anlushac11 I meant kc21.

Phil