All Small Six Carb spacing on ‘69 200

[Dustyford]

Hello, I put a ‘69 head on my ‘65 200. I’m trying to adapt a ‘68 1100 to the head. Did the ‘69 have a coolant spacer or just a spacer with a vacuum spout? I have a 1/2” phenolic spacer. That would put the carb at 1.2” above the intake opening. Is that too high for proper atomization? The ‘65 coolant spacer is 1” and what I have seen on a ‘69 is a .615” spacer.
Also, would the ‘69 head require a different spark plug. Thanks in advance.

 

[Frank]

The spacer will assist in every area, no worries with atomization.

 

[Dustyford]

The spacer will assist in every area, no worries with atomization.

1.2”

The spacer will assist in every area, no worries with atomization.

thanks. Did Ford get rid of a coolant spacer for ‘69 200s? This is what I have now minus the carb gasket.

 

[Frank]

I'll let the small6 guys verify that. I just know carbs and spacers. I believe you can loose the factory spacer if you don't need hot water around your carb base. I would keep it for the spacing up of the carb, and use your phenolic as well.

Carb spacers: 1) increase plenum volume, increases engine breathing capacity. 2) Keeps carb cool- very valuable. 3) Straightens out the thrust effect of part throttle. The angle of the throttle blade(s) shoves a large % of the incoming charge sideways. Spacers allow the incoming mixture to stabilize and enter the runners more evenly. This helps cylinder to cylinder distribution, both in volume and mixture consistency.
Up to 2" of spacer height is best. More doesn't hurt, but no gain.

 

[Dustyford]

I'll let the small6 guys verify that. I just know carbs and spacers. I believe you can loose the factory spacer if you don't need hot water around your carb base. I would keep it for the spacing up of the carb, and use your phenolic as well.

Carb spacers: 1) increase plenum volume, increases engine breathing capacity. 2) Keeps carb cool- very valuable. 3) Straightens out the thrust effect of part throttle. The angle of the throttle blade(s) shoves a large % of the incoming charge sideways. Spacers allow the incoming mixture to stabilize and enter the runners more evenly. This helps cylinder to cylinder distribution, both in volume and mixture consistency.
Up to 2" of spacer height is best. More doesn't hurt, but no gain.

Okay. That sounds good. The phenolic won’t work without the factory spacer. I don’t know anything about the ‘69 setup but I did find out the coolant spacer was only used until early ‘68. I don’t know what Ford did after that as far as coolant/carb relationship. Thank you very much.

 

[B RON CO]

Hi, so the opening on the 69 head was 1 3/4", and the older heads the opening is 1 1/2". I would probably look for a carb with the
1 3/4" opening. We learned that when you add a spacer and increase the plenum area, the engine acts as if you installed a carb with more CFM's, which is a good thing on our engines. Good luck