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My new 2 circuit 1050 Dominator

68Chevele

Veteran Member
Senior Member
I know I posted this on the "other" site but I like to show what can be done with a carburetor that has so many bad reviews. It's the 8896 1050 3 circuit Dominator that looks great but runs like crap and fowls plugs like crazy. So I decided to made it like every other Holley and turn it into a 2 circuit. I also added a couple of other bleeds for a cleaner idle, put in t-slot restrictors and made the throttle more like a 4150 opening the pri side more before the sec comes on when you brake torque the engine at the starting line. The biggest change is you need to get 2 metering blocks off any 600-850 Holley and 3310's will work also . I did the same things my former 750 now a 105 Dommy has to complete this one. Next up will be converting my 1050 King Demon.

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I am not impressed at all with Freiberg and his buddy. I like real world testing at the track when it comes to carburetors. In 2019 I tested my other Dominator and it should have been the best that night but one thing got in the way, tire spin. It was so bad with the Dominator on the car I had to put my 830hp back on for the rest of the night which ran 11.06 through the mufflers and I know the 1050 would have bested that but it will get tested later this year along with this on and a new set of tires. There will be no more tire spin when testing from now on.
 
I did take the 1050 apart again today after I found out you have to drill the metering blocks in the main well areas. The 3310 or 4781 blocks are .160 and need to be drilled to .165 and that's what I did. I also drilled the PVCR holes under the power valve restrictions to .075 to start with. Will be interesting to see how this all turns out. Now I am working on an 800DP making it a killer carb for something.
 
So, staying on point with modifying Holley's for better performance I came up with a homemade Idle ease only a little more work was involved. On most of the 4150's there is a hole on the side where the choke assy. is and if you drill that hole all the wat through you will end up in the main hole between all 4 barrels. As I looked at one of my 3310-1's I noticed that hole was factory drilled as the choke assy. of that time used that port. I then got the idea that if you were to drill it out bigger it would take the place of having to drill all 4 holes in the throttle plates for more air with a big camshaft to keep the T-slot closer to their needed .020-.030 placement. After that I looked at it and thought, "what if you drilled the hole out, then drilled the hole about a 1/2 in deep and tapped it to accept a Holley fuel jet for more or less air" so that's what I did. Now a Holley jet has a different kind of thread so I didn't have one and used a metric 6X1.25 tap and it's tight but after you run the jet in a few times with WD-40 works perfect, so now you have a working idle bleed so no more stinky idle. This works well with Holley's up to 800 cfm models. I am not sure of the 850's as I do not want to drill through and right into a throttle bore opening. I will post up pictures soon on this mod.20220207_140453.jpg20220207_140421.jpg
 
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Thank you ver much for posting this info .
It's not that hard to do this, here is one of the places I look at to get ideas
And the link. I'm probably weird this way but I really like reading as much as I can about Carbs. I also enjoy tuning them. I have a spare 406 engine in the shop and I've been trying to figure out what to do with it to keep it running and in shape. after reading your carb posts, I think I might turn it into an engine run stand test engine engine.
 
Thank you ver much for posting this info .

And the link. I'm probably weird this way but I really like reading as much as I can about Carbs. I also enjoy tuning them. I have a spare 406 engine in the shop and I've been trying to figure out what to do with it to keep it running and in shape. after reading your carb posts, I think I might turn it into an engine run stand test engine engine.
Here will be a new Youtube channel to watch form Allstate carburetors. Nothing yet on there but I am sure it will be pretty good once going.

 
Two things here.... If you're having tire spin issues the carb isn't the problem and #2 is I've never had to drill a hole in the throttle blades for any reason.
 
Two things here.... If you're having tire spin issues the carb isn't the problem and #2 is I've never had to drill a hole in the throttle blades for any reason.
I think the tire spin issue that night was the car made a little more lower end power with the bigger carb plus the track prep was pretty poor. Hard to gauge if a change helps when that happens. I will agree with the drilling the holes in the blades not needed if you get the metering right.
 
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