Holley 94 8BA

[texas_rat_trap]

Does anyone know how well the Holley 94 8BA's perform on Multi-Carb setup : Because they sure do look sweet & I just bought a matching pair.

 

[The Big M]

I'm sure with proper tuning they can work well, and they are a pretty popular choice.

Here's a link that may shed some light on the issue:
http://www.jalopyjournal.com/forum/show ... php?t=4618

And another:
http://www.streetrodderweb.com/tech/051 ... index.html

From the above article:
The problem is that when two or more carburetors are used, the vacuum signal drops earlier and more aggressively than with a single carburetor. As a result, the power valves open prematurely, making the mixture much richer than necessary. A common mistake in this situation is to re-jet the carburetors--that results in even worse driveabilty problems. Another mistake often made is to plug the power valves, something that we don't recommend. The best approach to this problem is to stick with stock jet sizes (or very close) and use power valves that open at a lower value. In the past with dual 94s, we've used 3.5-, 4.5-, and 5.5-inch Hg valves, depending on the cam used, with excellent results.

 

[texas_rat_trap]

I'm sure with proper tuning they can work well, and they are a pretty popular choice.

Here's a link that may shed some light on the issue:
http://www.jalopyjournal.com/forum/show ... php?t=4618

And another:
http://www.streetrodderweb.com/tech/051 ... index.html

From the above article:
The problem is that when two or more carburetors are used, the vacuum signal drops earlier and more aggressively than with a single carburetor. As a result, the power valves open prematurely, making the mixture much richer than necessary. A common mistake in this situation is to re-jet the carburetors--that results in even worse driveabilty problems. Another mistake often made is to plug the power valves, something that we don't recommend. The best approach to this problem is to stick with stock jet sizes (or very close) and use power valves that open at a lower value. In the past with dual 94s, we've used 3.5-, 4.5-, and 5.5-inch Hg valves, depending on the cam used, with excellent results.

Okay this is probably the Dumbest question.. the power valves...this is the dime size valve on the throttle body? and if so on mine there are none... and on the same carb looks like the vacuum port is blocked off.. and on the same carb I'm assuming this is the secondary carb, doesnt have choke butterfly, but has a 5/16th tube going down at angle from center of 2-5/8th carb top opening to down 1/2 of inch looks like towards top of float bowl or accelerator pump. Will post pictures if need be. Articles from hamb really Skooled me thanks.

 

[texas_rat_trap]

heres a picture of what 1 of my 94's looks like except mine does't have a choke butterfly and the other 94 has a choke butterfly but doesnt have that tube running down at an angle

and here are the carbs that I have

 

[The Big M]

Sorry, I'm not really sure where the power valves are located on the 94. I'd suggest you try the technical section of the Holley website.

 

[texas_rat_trap]

The holley 94 power valve location is between the throttle body & the carb have to seperate to get to power valve.