Help with holley

[Shaunp]

Hi muscle guys. Hope all is well. I have a holley 4 barrel. Was testing it but I have a problem, hoping you can help. I installed the fuel line directly to the carb without the regulator. Fuel is coming out the bolt on top of where the vacuum hose for the dizzy goes an a lot a fuel is coming out the two tubes when the air filter goes.

[colin davids]

Hi Shaun. If you are running a regulator then I assume you have a holley blue pump rather than the red. Without the regulator the blue pump will push 13 psi. Way too high for the holley needle and seats. That's why its pushing fuel out of the bowl vent. A holley likes 6 to 7 psi so set your regulator there and your problem will be solved.

[Shaunp]

Thank you Colin. I'm planning on running it on a sierra irs. Any idea if the xr6 fuel pump and regulator will work properly

[hitlers revenge]

Are there different Holley 4 barrels?

And if so, how do you know which one you have.

Where can one buy a regulator?

[RASSIE]

There are 100's of Holley's. They got list numbers. List 1850 is a 600cfm.
Rassie.

[hanov0]

Thank you Colin. I'm planning on running it on a sierra irs. Any idea if the xr6 fuel pump and regulator will work properly

It will work as long as its of the carbed XR6

What size holley are you planning on using?

[hitlers revenge]

Thanks Rassie

Where do I start looking for numbers?

[Shaunp]

Thanks Hano. Looking at a 450

[ters]

Thanks Rassie

Where do I start looking for numbers?

List of all Holley's, CFM's and service kit number: http://documents.holley.com/techlibrary ... isting.pdf

tech_carb_list.jpg (14.83 KiB) Viewed 3293 times

Ters.

[Shaunp]

Awesome info