The Ford Barn

Gene F · 03-23-2025, 06:12 PM

So, this is a flathead?

I have triple Holley/Ford 94s on my Y-block. I am guessing progressive linkage. Call Speedway Motors and get a phenolic gasket (shallow spacer) to go under your primary carb. If there is a heat riser tube for a choke on that intake you need to block that off.

Sounds like float, or powervalve to me.

As for the starting, try this, as you turn the key slowly advance the accelerator pedal to about 1/8th open. I have wire loom wrap (plastic on my car) over the fuel line from the pump up to the carbs. Make sure your ignition points are opening enough.

My carbs have a regulator and a gage. 1lbs to 1.5 lbs. Some crabs run on very low fuel pressure. Pressure is not the same as volume. Be careful about upping the idle to cure a problem. That can have downstream consequences on some carbs (like on a Model-A ford).

Pull a sparkplug. What does it look like? don't over-analyze it. Just take a look.

Putting a heat spacer under the middle carb is one thing, but if you crack that carb open a vendor will tell you you own it.

03-23-2025, 06:12 PM	#3
Gene F Senior Member Join Date: Mar 2012 Location: Ohio Posts: 2,689	Re: Tri-power issues So, this is a flathead? I have triple Holley/Ford 94s on my Y-block. I am guessing progressive linkage. Call Speedway Motors and get a phenolic gasket (shallow spacer) to go under your primary carb. If there is a heat riser tube for a choke on that intake you need to block that off. Sounds like float, or powervalve to me. As for the starting, try this, as you turn the key slowly advance the accelerator pedal to about 1/8th open. I have wire loom wrap (plastic on my car) over the fuel line from the pump up to the carbs. Make sure your ignition points are opening enough. My carbs have a regulator and a gage. 1lbs to 1.5 lbs. Some crabs run on very low fuel pressure. Pressure is not the same as volume. Be careful about upping the idle to cure a problem. That can have downstream consequences on some carbs (like on a Model-A ford). Pull a sparkplug. What does it look like? don't over-analyze it. Just take a look. Putting a heat spacer under the middle carb is one thing, but if you crack that carb open a vendor will tell you you own it.