Holley metering block differences

Holley metering block differences. Metering blocks are basically the computer of the carb. The (ported) timed spark port is only for emissions/EGR engines. Our examples include the 0-4781-C (Classic Double Pumper), the 0-80514-1 (Classic HP) and the 0-80805-HBX (Ultra XP). If the metering block on the rear of that 780 has a power valve hole, it's a primary metering block someone added. Here’s a simple tip that can save tons of effort. Vapor Guard. This cavity in the main carburetor body is sealed to the back side of the power valve. 025 Nov 14, 2006 · A case in point is this adjustable metering block derived from the stock metering block for Holley's PN 7448-350 two-barrel (2-bbl) carburetor. The metering block houses various channels, passages, and jets that control the flow of fuel to different circuits within the carburetor. 021" to 0. $113. Feb 2, 2014 · 258 posts · Joined 2010. The Ford Holley 4180 carbs also have it (1982-85 5. I also pin gauged the low speed air bleeds on the carb I got the blocks from and matched them size-wise on the new body. The quickest way to reduce the size of this restrictor is to place a length of small diameter wire inside these brass restrictors. Part Number: HLY-134-131 5. www. com take air from the air bleeds in the main body and mix it with fuel from the float bowl. 270-793-0900. Oct 31, 2019 · The differences are plentiful. i tried holley, and i do have the holley list number w/ parts listed. Thank you for purchasing our Billet Metering Block Kit. (Typical View) And Carburetor Illustrations. toyot111 Discussion starter. If you don;t have a air cleaner. In most Holley carburetors, these idle feed restrictors are small brass cups with a fixed orifice. Jul 8, 2013 · I'm guessing the carburetor has the wrong metering block gaskets installed. See More Specifications | Check the Fit. Cortez Silver with dark blue interior and VE3. NOS Jets. Those are hole sizes, you would need to convert to jet sizes if you are going to use billet plates. Metering blocks feature improved durability, true gasket sealing and fully adjustable (emulsion bleeds, power valve channel restrictors & idle feed restrictors) Integrated idle bypass valve eliminates the need for holes in throttle plates and allows for proper adjustment of idle while maintaining correct throttle plate to transfer slot Dec 3, 2018 · The conversion kit (foreground) replaces the metering plate like on the 4160-style carb on the left and replaces it with a metering block like the 4150-style carburetor on the right. Part #34-13 for the 3310. Our Cash App name is $AirandFuelGuru Jun 24, 2002 · randy is right on the fact that the difference between 4150/4160 is the secondary metering block on the 4150. 11180 is a standard replacement 2 circuit cast metering block. The Classic double pumper and HP blocks are similar, but with a different layout. 8°-12° of vacuum advance is the typical limit (some canisters are adjustable). I wouldn't use the blocks from a spreadbore. At the top of the straight “V” is the idle feed restriction. Sep 25, 2003 · I have 2 carbs on the bench. Application Specific Parts. 021" jet in their billet blocks as stock size. Anyway, on those used blocks, the primary IFR’s were . Anything internal that I can`t see without cutting them apart ? Just curious . Jul 4, 2019 · Most Holley carbs are fitted with no power valve in the secondary metering block. 029 and secondary were . Benoit says much of the confusion comes down to ambiguous semantics Metering Block Gasket For Models 2300™, Model 4150™ Model 4160™ and Model 4500™ without Intermediate Circuit Distribution Blocks, Filters, Adapters and Fittings. Jul 14, 2010 · Air bleeds, sometimes referred to as "air jets" or "air bleeders" play a vital role in the operation of your carburetor. They said the only diff between the 4776-4781 blocks was in the idle restriction. holley metering blocks. A 4160 style carburetor uses only a primary metering block, substituting a thinner metering plate that is hidden from view by the secondary float bowl. Aug 27, 2020 · Rear plate, 34R6153B #35 has a 0. 95. Billet Metering Block Standard Calibration fits most 1850, 3310, 4776, 4777, 4778, 4779 Holley® model numbers. Hose Lines and Tubing. Vacuum advance should be connected to full manifold vacuum; not ported. Meanwhile, the XP series incorporates billet aluminum blocks. Jul 18, 2019 · The Holley 4160 carburetor was introduced as an updated version of the 4150 in the 1970s. View Details. The idle screws have me thinking that. the 3310-1 carb on my 427 is a 780cfm vacuum secondary carb with secondary metering blocks, which makes it a 4150if you look 3310-1 up in your holley manual it decodes as a 4150. 037" idle hole and the jet holes are 0. And no, it really makes no difference whatsoever in the performance of the engine. . Holley Replacement Metering Blocks 134-68. The #35 plates are available out there. While this makes the 4160 less tuneable than its 4150 forefather, it necessitates only a single fuel line (a transfer May 20, 2007 · 27 posts · Joined 2005. Blue, Non-stick. some of these blocks have to be interchangable with other carb's. Thanks , Bob Holley Carburetor Numerical Listings Carb. Holley meteringPurchase holley metering block 5673 in new london, ohio, united states Metering block holley secondary converting gasket betweenHolley metering blocks avenger street block carburetor replacement secondary parts cfm. Reference, Holley factory specification book, "Illustrated Parts & Specs Manual, Holley Carburetion, No. #3 · Jan 19, 2008. Likewise, differences between the billet metering block and the cast units used on the street version also include adjustable emulsion circuits. The air cleaner makes a difference. In the case of a QFT carburetor (and many others out there), metering blocks take air from the air bleeds in the main body and mix it with fuel from the float bowl. Learn More. Holley carburetor metering block gaskets are available for a variety of Holley carburetors with and without intermediate systems. Mike VV, Feb 28, 2021. Also Jan 19, 2008 · T. FYI - the primary bleeds on the 650 were . Intercooler Sprayers. Metering blocks are where the action is when talking carburetors. In fact, the primary metering block have the same part number. 5" in gear. Mike; The 3828 is the correct secondary block for a later issue 4053 service replacement carb. The Holley mainbody and metering blocks are cast and rough and come with straight boosters. Installation is no different than a conventional metering block. Also in Plumbing AN Fittings and Hose. 037" idle hole and both jetting holes are 0. Dec 31, 2019 · (This is a metering block, NOT a metering plate). Estimated Ship Date: Jun 14, 2024 if ordered today. Microswitch and Solenoid Mounting Brackets. Holley Replacement Metering Blocks 134-131. The 5 stage emulsion blocks can have the same fuel curve of the 2 stage emulsion blocks. Your metering block comes with . com. Replaceable idle air bleeds (yellow arrows) are used in the top-of-the-line street and race Holley carbs, making a change easy. May 6, 2007 · The primary will always have removeable jets, a tapped hole in the center to screw a power valve into, and adjustable idle needles. Holley Replacement Metering Blocks 134-155. 086" driver side. Apr 25, 2009 · I have a 4160 and used the holley conversion kit on my 3310, center hung floats so no transfer tube. The secondary metering block does not have the power valve fitting drilled into it. For example, the Classic block is set up with a vacuum port. 0 out of 5 stars If after lowering the fuel level in the bowls quite a bit, and it still leaks then you have a needle & seat issue. On many 5 stage blocks some emulsion will be plugged as all are not needed. The most noticeable difference in the 4160 is the thin secondary metering plate, which is used in place of the secondary metering block. Feb 27, 2021 · As noted, a 4165 is a spread bore. The point of Feb 11, 2010 · 238 posts · Joined 2006. The feed is located on the fuel bowl side of the metering block (location shown Oct 6, 2016 · Typical carburetor setups for drag racing include two- or three-metering systems. Adapters. They should have two emulsion holes, if the other blocks are a later HP block May 28, 2022 · The Holley Spreadbore carbs, the 4165/4175 models all use the transfer tube type metering block and gasket. ! Mike. Bowl vents have a 1 3/4 inch air gap from bottom of filter lid which is a flat plate. Dec 21, 2023 · Check Details Holley metering block primary. Has spark advance provision. If you would like to help support our channel please feel free to donate through Cash App. Set the primary fuel bowl aside. I went through this with Quickfuel a while ago inquiring about their billet blocks. Fuel Pumps and Regulators. Out in the garage yesterday and got to wondering exactly what the differences between the billet metering blocks and the stock ones that come on the carbs are . All Hose Groups. That was nice and clean and felt just right. #4 · May 20, 2007. Air bleeds are responsible for determining the amount of air that will mix with each circuit in the metering block. This unit was originally designed as a 350-cfm Ford Thank you for purchasing a QFT 3 circuit metering block. Nov 11, 2015 · want. P/N 34-8. In case you Jan 3, 2010 · Holley sells a conversion kit to remove the metering plate on 3310's and add the metering block. 99 Free shipping Metering Block Secondary Metering Block Power Valve Pump Nozzle Size, Primary Secondary Nozzle Size or Spring Color Primary Bowl Gasket Primary Metering Block Gasket Secondary Bowl Gasket Secondary Metering Block Gasket Secondary Metering Plate Gasket Primary Fuel Bowl Secondary Fuel Bowl Throttle Body & Shaft Assembly Venturii Diameter Primary Carburetor Metering Blocks. 1 position for idle speeds below 900 rpm and suggests moving to the No. Air filter typical K&N type. 2 position for engines that idle above 900 to 1,000 rpm. The only difference i see in the primary metering block that i converted is that it has a fitting for a power valve. but alot of the metering block #'s on the list don't help. May 31, 2017 · Many of the tuning capabilities between the two carburetors is quite similar, although the initial out-of-the-box tuning of the carburetor may be better suited to either street or track operation. Nov 27, 2021 · 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. Nov 23, 2014 · (stock 4777 metering blocks) This is best done by hand filing the idle air bleed starting at . Find Holley Carburetor Metering Block Gaskets R3310-1 Carburetor List Number and get Free Shipping on Orders Over $109 at Summit Racing! Holley has been the undisputed leader in fuel systems for over 100 years. Here is the differences that I notice at first glance: The Demon has 4 corner idle adjustment mixture screws. Kit Kit Needle Jet or Plate Block Block Power Valve Nozzle & Seat Size 0-1848-1 4160 465 37-119 37-933 6-506 122-57 N/S N/S 34R9716-3 125-85 . The Holley metering block is a crucial component in a Holley carburetor system. 36-51, (Revision 2). There are some tuning features that this block has that are illustrated below. The number Metering Blocks, Primary, Replacement, Cast Aluminum, Gold Iridited, Holley 4160 Series Carburetors, Each. Metering Blocks, Replacement, Model 4150, 0-80541-1, Cast Aluminum, Silver Anodized, Gaskets, Each. Holley Replacement Metering Blocks. The intermediate system has a feed and discharge restrictions. and fine tune using a afr gauge to check off idle throttle transition AFR progession. Contents: Numerical Parts List, Adjustments And Specifications, Service Parts List, T. As far as the sizes, both the original and later service carbs are advertised as 780 cfm. Jan 26, 2018 · Some guys recommend sticking anywhere from 0. 1969 04A Van Nuys-built Z/28. quickfueltechnology. Obvious differences are the replaceable emulsion bleeds , IRF`s , PVCR etc . Both are mech sec. Hardline. Electrical and Wiring. Primary & Primary Secondary Primary Secondary Primary Carburetor Model CFM Renew Trick Secondary Main Main Jet Metering Metering Primary Discharge Part No. It plays a vital role in regulating the fuel mixture that is delivered to the engine. May 1, 2017 · Holley's 4150 sports a secondary metering block instead of a metering plate, which makes it the most tunable Holley because you can swap jets and power valves to meet performance demands. couple of features and tuning aspects of this metering block you should become familiar with. 073 and the secondary bleeds were . Metering Blocks, Primary, Replacement, Cast Aluminum, Gold Iridited, Holley 4160 Series Carburetors, Each. The intake manifolds ARE different. JimM's firstgens. This screw-in restriction controls the fuel side of the idle and off-idle air/fuel mixture. A Holley 750 and Speed Demon 750. This metering block is designed and intended for use on the primary side of most Holley® performance carburetors without an accelerator pump transfer tube and any Demon Oct 23, 2006 · After many discussions with my engine guy, who knows Holleys very well, I swapped the 4778-2 metering blocks for a set of 4777-2 blocks. someone told me the primary and secondary metering . Jul 16, 2017 · When you have a metering block (primary side on all carbs, and on the rear of 4150 and 4500 carbs), no additional screws are present. Before determining whether a certain application calls for a two- or three-circuit metering system, Quick Fuel’s Marvin Benoit says it’s important to first define what each circuit represents. Thise blocks come with nothing in them, feeds are usually pressed in, mainwell and idle well plugs added as well. Our VENOM II blocks have 5 stages but thats not the reason for their existence. 51. 750-inch diameter throttle bores. Virtually every carburetor you come across will have these which make this a universal discussion. Both the Classic Double Pumper and the HP carbs use cast metering blocks. ( 1 ) Part Number: HLY-134-131. Installation Instructions for 34-8 Billet Metering Block Kit. Engine is a Ford 289 with 280H comp cam, single plane intake plus shorty headers, idle rpm is 950 dropping to 650 in gear with 16" of vacuum and 12. Air flow is from a rear facing 4 inch cowl hood. No. On the right (yellow arrow) is the replaceable style for the Ultra range of Holley carbs. Sep 1, 2022 · There will be two idle feed restrictors in each metering block with a restrictor for each of the four idle circuits. (1) Estimated to ship direct from manufacturer on 05/30/24, pending manufacturer availability. The secondary could have various combinations of any of the above items, or just be a small flat plate with some holes drilled in it, depending on the carb. Metering Block, Primary or Secondary, Billet Aluminum, Blue Anodized, Holley 4150 Series, Alcohol, Each. com Camaro Board. Mar 3, 2018 · Mar 04, 2018 #2. Holley recommends a 0. Do your final check with the air cleaner installed. Externally, the easiest differences to spot are the lack of a choke on the HP series carb and the Jul 27, 2015 · On the left (red arrow) is the fixed type most commonly seen in regular metering blocks. Sold Clippinger Chevrolet. For primary and secondary on 4165, 4175 & a few 4150 carbs. Dec 17, 2020 · When installing the power valve in the metering block, we like to set the gasket on the power valve, invert the metering block, and thread the valve in place. Holley metering moparHolley 3413 metering block Holley® 134-131Holley® 134-128. #5 · Feb 4, 2014. Make sure the accelerator pump linkage moves the arm to the diaphragm as soon as the throttle is moved. Using a 650 DP block in a 800 will only lean the idle out a bit, I found this beneficial. 0L Mustang). These gaskets ensure a good, leak-free seal between Oct 10, 2019 · What we’ll look at here are the differences in the big Holley 4150 carburetors – all with 1. Holley Replacement Metering Blocks 134-280 Metering Blocks, Carburetor, Replacement, Cast Aluminum, Gold Finish, Gaskets, for NASCAR Carburetor, 0-80583-1, 500 cfm, 2-Barrel, Each Part Number: HLY-134-280 Holley recommends the No. 028" size jets in these holes with various ones blocked etc. Vents are angle cut and stock height for Holley 1850. Also primary on some 4160s. Other than that, they look relatlively the same. This ensures the gasket remains properly centered on the power valve. Some literature refers to them as 800 cfm, but 780 is the Dec 31, 2023 · Holley 1904 carburetor metering blockMetering holley billet blocks proform block race carburetor Holley metering block 600 cfmMetering holley block carburetor 1904. The "push" that gets fuel through the metering block is provided by atmospheric pressure (remember our last class) and without it a carburetor will not function. They interchange fine, the only difference would be the idle feed size. Primary/Secondary Metering Block Gaskets. #3 · Feb 12, 2010. Our billet aluminum item 3 10 holley carburetor non stick fuel bowl metering block gasket 4150 4160 4500 10 holley carburetor non stick fuel bowl metering block gasket 4150 4160 4500 $20. If not, the power valve opening can be blocked with this simple block-off plug from Holley (P/N: 26-36). With the fuel bowl removed, only the gasket between the metering block and main body hold the metering block in place. Speed-Seal and Speed-Flex. Metering blocks from PitStopUSA. However, some carburetors may be fitted with a secondary power valve which can be used if additional fuel is demanded on the secondary side. 2 posts · Joined 2008. 089". 093" passenger side, 0. If it stops leaking then you have a difference of float bowls between the 4150 & 4160 from respect of the metering block and how much fuel they will tolerate before it starts dripping through the boosters. The Holley is only adjustable on the front. Raced at Lions in LA. Oct 31, 2023 · The same blocks as the double pumper version of this vacuum secondary street HP carb I have now. Gauges. The original 4053's used a 4519 secondary block. Earls Classic Hose and Hose Ends. Holley® 134-63Metering block holley aluminum kit blocks Holley metering block hly conversion kits kit carb alright mods parts summitracingHolley® 134-280. Front plate 34R6153B #34 is 0. SHARE POST #6. The 4150 is just easier to change the secondary jets. Find Holley Replacement Metering Blocks and get Free Shipping on Orders Over $109 at Summit Racing! Jul 2, 2016 · That's a lot of good info there and the only difference between a quick fuel billet metering block and a holley cast one is on the secondary blocks the holley cast ones don't have any material removed where the idle mixture screws goes in as compared to the quick fuel billet blocks everything is machined and also on the holley secondary metering block kits both are the same for the 3310 and Feb 6, 2015 · This difference is also easy to spot as the 4150 version uses metering blocks located on both the primary and secondary sides of the carb between the carburetor’s main body and the float bowls. Holley Replacement Metering Blocks 134-280 Metering Blocks, Carburetor, Replacement, Cast Aluminum, Gold Finish, Gaskets, for NASCAR Carburetor, 0-80583-1, 500 cfm, 2-Barrel, Each Part Number: HLY-134-280 Jul 1, 2009 · What makes the Holley 4180 different from its aftermarket 4150/4160/1850 cousins is the tamper-proof metering block that makes it virtually impossible to adjust the idle air mixture. 055. 031. The "push" that gets fuel through the metering block is provided by atmospheric pressure (remember our last class) and without Jun 22, 2012 · Mike, I think those metering block numbers are from a 4150 series List 4779 750cfm DP, but suggest you call or e-mail Holley Tech Support to confirm - they should be able to tell you precisely what they're originally from. $16. Height of filter lid is 2 3/4 inch from carb inlet. That AED did have 1/8 holes in each primary though. V. BS'er formally known as Rebeldryver. One of the main functions of the metering Categories/ Plumbing AN Fittings and Hose. 043” idle feed restrictions. A 4160 and 4150 are both square bore carburetors. Some of the 1980's and early 1990's standard squarebore Holley 4150/4160 carbs also use this transfer tube deal, before Holley finally got smart and discontinued it. 062" (1/16") using a drill bit to hone it. ou dt zc vm cw zs yn eu og so