Drilling Metering Block For Adjustable Bleeds | Holley Carb Tuning | Holley Carburetor Secrets

Today we will be going through what it takes to drill out your stock holley metering blocks and convert them into high performance tuning tools. The point of this video is that you can use brass set screws 8-32 in size to restrict the fuel going into the power valve and idle circuit of the carburetor. By adding these plugs and drilling out your own orifices, you can tune your carb to perform any way you want it to with no compromise. This mod Takes patience and a steady hand but if you can take care of this successfully, you'll be good to go.

Drilling Metering Block For Adjustible Bleeds | Holley Carb Tuning | Holley Carburetor Secrets

#Holleycarb #Carburetortuning #Carbedls

This is the last part of building your own holley carb for high power. This has been a 3 part series based around the entire premise that you can make any power that you want to make if you make the right choices when it comes to building your own holley carb. In the next video that I make about carbs I will be sharing what I ultimately decided on using for my e85 turbo build. This series of videos will show you that any regular guy can take a stock used carb and use used parts to make it perform the way it needs to perform for his build. In future videos I will show you guys how to make the nessesary changes to be able to tune a holley. everything from adjusting the idle all the way to adjusting the secondary power enrichment circuit. Tuning is based on a triangle and the better your tune is down low, the easier it will be to tune up top.

Useful tools (Affiliate links)

Pin gauge set: https://amzn.to/319Cn1a

Today we are going over the carburetor build for my turbo LS build. This carburetor started life as an alcohol carb race demon and soon it will be set up for regular 87 octane gasoline. Once I finish the tune for 87, I will be adding a cam and then later retuning for the switch to e85. Once all that preliminary tuning is out of the way, I will be installing the turbo charger and begin tuning on that as well. As I step up the power levels, this carb will get wilder and wilder so you dont want to miss any of the holley carb secrets!

After A long while I have put the most cohesive method of setting up the idle on your holley carb. Setting the idle mixture screws and getting your engine to run clean without having to buy any special tools. In this video I manage to set up the idle in less than 15 mins and also do it quickly and easily. As of right now, the holley carb on the 318 duster is perfectly set up in both idle mixture and idle speed. The carburetor in question is a DEMON 625, an older barry grant holley copy before holley bought out DEMON. It took a little bit of work, but I've got this set up perfectly.


Tuning Holley carbs are probably the most widely used carb is all of automotive history. The Holley 4 barrel is a staple among racers and cruiser a like but too few people really understand what goes on inside their Holley carb and too many decide to ditch the old carb in favor of a new one. I am here to share 5 secrets you can employ TODAY to get that Holley nice and tuned and running better than ever in true DIY fashion. I'm put to work these 5 secretes to get my Carb ls going so these are definitely something you need to keep in mind. Tuning a holley carb is what separates the boys from the racers. Depending on how well this video does, I'll be breaking up and going into full detail of what goes on specifically in the different circuits as well so stay tuned!

How to set idle on a holley and other such questions are answered! Holley carb wont idle? Car wont idle? Holley carb runs rich? Holley carb wont start hot? All these questions AND MORE will be answered TODAY. too many people have no idea how the holley idle and transition circuit work on a holley carb. too many people belong to the set it and forget it line of thinking when it comes to out of the box carbs and not too many really know whats going on and decide to just give the carb a bad rap. Well, today we are going into an in depth tutorial and explaining on how these systems work and how you can get more out of your carburetor, maybe even pull up a few MPGs while you are at it!

Holley Carb Running Rich? Watch This! | Holley Carburetor Secrets | Holley Carb Tuning |
We are back at it again to bring you another holley tuning video! This weeks video will talk about tuning a holley carb but without any fancy tools. I'll be showing you guys how to tune a holley carburetor by only listening to the exhaust note. If you guys can master this skill. You will know what to look for when you run into issues in the future. This is somewhat of a longer video but it was super important that I bring out as much tuning info to light as I can so that way you guys can get back