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Judson EFI
Posted by: alexanderwoelfel ()
Date: January 07, 2018 11:07AM

Hello All,

Getting ready to install a Judson and I wanted to know if anyone has tried to run it with EFI? Currently my setup will be carbureted, but I was curious to know for future endeavors. I know the units don't make a ton of boost so I though it might be limited by the carburetor. Instead of a larger carb what about port injection and a throttle body installed on the Judson? Would it increase the boost a bit? Nothing crazy but maybe up to 5 psi?

I know there are more cost effective ways to increase power out of the car, but wouldn't the cool factor be pretty high with a fuel injected Judson setup? Might even be one of a kind.

Anyways Im looking for any thoughts on the subject.


1962 Monza Convertible

Assistant Editor
Los Angeles, California

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Re: Judson EFI
Posted by: MattNall ()
Date: January 07, 2018 11:10AM

Alex... they do NOT make a "Ton of Boost" 3-4 psi on a 145 less on a 164...

But I'll be here for YOUR report... hope I'm wrong..

Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!

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Re: Judson EFI
Posted by: wv-geo ()
Date: January 08, 2018 06:20AM

With the way the Judson is plumbed up to the engine it might make sense to go with a single TBI instead of port injection.
A dual GM throttle body would give you the CFM, or a large single TBI if you can find one.

The TBI found on the first generation Taurus with the 2.5L HSC engine might work for you (Rated 90HP net, 125HP gross).

Dan Stark
Hurricane, WV

1961 Lakewood 500, 80HP, PG
1964 Corvair 500 Coupe, 140HP, 4spd (Christine)
1965 Mustang Coupe, 6cyl, 3spd


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