Awesome! just keep an eye on the fuel inlet lines...they often leak at the connections.
Installed the Holley
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Fleet Mechanic
Joined: Nov 2009
Posts: 1,398
Likes: 6
Installed the Holley
So, 2 weeks ago, my old stock carb was spewing gas out while I was 100 miles from home. Purchased the Holley 670 cfm unit. Installed using all steel line with rubber hose as the couplers where needed. Also added a fuel regulator set at 5.5 psi. Old, stock fuel pump is still in use. I made a couple of runs to work and then the run back up I-5 to drop off some stuff to my son, etc...
The first start-up had the 460 roaring to life. Love that electric choke
Next, no fuel leaks. Cool!
The immediate impression I had was the smooth acceleration while driving. The old carb bogged down while it was cold. The trips to work and Redding went without incident.
The only item worth mentioning is that my truck stalls out while waiting at the light. I'm thinking that I have to adjust the idle settings.
All-in-all, a great upgrade in my book
The first start-up had the 460 roaring to life. Love that electric choke
Next, no fuel leaks. Cool!
The immediate impression I had was the smooth acceleration while driving. The old carb bogged down while it was cold. The trips to work and Redding went without incident.
The only item worth mentioning is that my truck stalls out while waiting at the light. I'm thinking that I have to adjust the idle settings.
All-in-all, a great upgrade in my book
Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
Ive go a brand new Holley avenger on my truck and it runs like crap and I cant find anyone that knows anything about carbs.
Holley site has lots of info but you have to know something about what your doing to start with.
Holley site has lots of info but you have to know something about what your doing to start with.
Post Fiend
Joined: Mar 2011
Posts: 8,501
Likes: 4
From: Lynchburg, VA
I slapped a Holley Truck Avenger on my truck last winter and fought flooding problems through spring until I finally gave in and bought a fuel pressure regulator. It likes about 5.5psi of fuel pressure. It's been great, for the most part, since then.
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Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
Define "runs like crap". Does it idle ok? Is it hesitating off idle? No power? Gotta give us something to work with.
I slapped a Holley Truck Avenger on my truck last winter and fought flooding problems through spring until I finally gave in and bought a fuel pressure regulator. It likes about 5.5psi of fuel pressure. It's been great, for the most part, since then.
I slapped a Holley Truck Avenger on my truck last winter and fought flooding problems through spring until I finally gave in and bought a fuel pressure regulator. It likes about 5.5psi of fuel pressure. It's been great, for the most part, since then.
i have a extra spring hooked on it to pull it back now but it would be dangerous if the spring came off.
The extra spring maes it hard on the leg pushing down the pedal.
it also bogs for a second when you step on it.
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Fleet Mechanic
Joined: Nov 2009
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Senior User
Joined: Feb 2013
Posts: 266
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From: Idaho
Holley's are finiky...what size engine? vs what size carb did you get? do you have vacuum secondary or mechanical? Did you change the intake? and or base plate? also there should have been different springs for the vacuum advance some are lighter some are heavier...
Post Fiend
Joined: Mar 2011
Posts: 8,501
Likes: 4
From: Lynchburg, VA
It doesnt idle down and its a carb adjustment not the idle screw.
i have a extra spring hooked on it to pull it back now but it would be dangerous if the spring came off.
The extra spring maes it hard on the leg pushing down the pedal.
it also bogs for a second when you step on it.
i have a extra spring hooked on it to pull it back now but it would be dangerous if the spring came off.
The extra spring maes it hard on the leg pushing down the pedal.
it also bogs for a second when you step on it.
Hesitation when you first open the throttle could indicate an accelerator pump shot that's too small. What color accelerator pump cam do you have on there now?
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