The Ford Barn

motordr · 08-16-2017, 08:07 AM

So I ordered a couple of carb kits for my Holley ECG5 two barrel. It has 1 1/16" venturis. The Daytona Parts representative indicated 7.5 power valve when used as a single carb and 5.5 power valve when used as duals.
What's your recommendation of which power valve to use, it's a single carb on a mild Mercury engine.
I have found that it works best with the #57 jets that it originally came with.
For your info the carb kit is #601 ($42.00) The kit comes with 7.5 power valve.
The 5.5 power valve is #3200-55 ($8.00)
I have both power valves so can go either way. Looking for your actual real world experience, Thanks, Ted

08-16-2017, 08:07 AM	#1
motordr Senior Member Join Date: Nov 2010 Location: Beamsville,Ontario,Canada Posts: 482	Holley ECG5 So I ordered a couple of carb kits for my Holley ECG5 two barrel. It has 1 1/16" venturis. The Daytona Parts representative indicated 7.5 power valve when used as a single carb and 5.5 power valve when used as duals. What's your recommendation of which power valve to use, it's a single carb on a mild Mercury engine. I have found that it works best with the #57 jets that it originally came with. For your info the carb kit is #601 ($42.00) The kit comes with 7.5 power valve. The 5.5 power valve is #3200-55 ($8.00) I have both power valves so can go either way. Looking for your actual real world experience, Thanks, Ted