2 circuit metering blocks

 

The #4100 block is a secondary conversion block to convert a model 4160 to a model 4150. Mr Gasket Swivel. Standard calibration for out of box performance - designed to fit most real world street Jan 10, 2018 · Fits holley 4150, 2300, and 4500 (2-circuit) carburetors. I am thinking about just putting a kit in this carb and giving it a try as is. Your metering block comes with . Venom II Metering Blocks quantity. Old style 8896 is a three circuit, and probably with straight leg boosters. Very clean and never fouls a plug. and restricted the open air bleed holes lower in the body. Quick Fuel Technology. keep that in mind, because that's why these carbs are so lean at WOT. 00 0804071 Gasket - Slight plug, nylon: Your Price: $0. SKU: 800110 Categories: Carburetor Parts & Accessories, Gaskets, Metering Block Description Holley Metering Block Gasket for 3 Circuit Holley cast carburetors are manufactured in house by APD, and made from reusable MP-15 material. Features adjustable idle feed restriction. Also make sure the kill bleed holes get cleaned when you open the angle channels. May 17, 2018 · May 21, 2018 #6. #3 · Jul 4, 2020. 024, plugged, . I had planned on taking a pin gauge and set the block up as the factory blocks Nov 14, 2020 · Nov 14, 2020 #1. or, change the metering blocks to conventional Holley 2 circuit, and do away with the intermediate circuit altogether. 302 main well exit Feb 23, 2023 · Due to its high amounts of signal and shift recovery the SV1 uses 4150 style 2 circuit metering blocks. 043” and intermediate discharge =. 3 to 2 conversion info. <br /> 8-139 2-circuit QFT, Demon ® , PROFORM ® and for use with<br /> 4150 style metering block, non-stick; 2 ea. 51301,5130, Adjustable Emulsion, Billet Metering Blocks, 2 circuits, billet metering block, metering block, metering, block, . mar . US $219. HP Billet Metering Block for racing and fine tuning applications. 000" Secondary Throttle Bore Diameter: 2. <br /> 8-150 QFX, Demon ® , Holley ® 3 circuit big bore race only May 10, 2008 · Use a standard two-circuit metering block and gasket. 052" hole inserts, those are what I prefer. 63. <br /> 8-136 3-circuit, non-stick; 2 ea. The 2-circuit gasket blocks the unnecessary holes. 2 circuit with standard 1/4 x 32 Holley ® jet thread. These pre-calibrated emulsion Gasoline Billet Metering Blocks. Standard calibration for out of box performance - designed to fit METERING BLOCK AND BOWL GASKETS. I wanted to use the carb on the street in a milder 489 BBC—10:1, 781 heads with big valves, roller 240 @. Ericnova72. Dec 24, 2021 · I have came across what appears to be a Holley 1000 HP carb. 8896-1 (1050 cfm) intermediate feed =. Feb 26, 2014 · A 2 circuit is easiest as you can use the original metering blocks with some minor mods. QFX 3 Circuit Billet Metering Block 5 Emulsion - Fully Adjustable - Designed for QFX, and Holley® 4500 style carburetors. This kit enables you to convert your single or dual inlet carburetor from a secondary metering plate to a secondary metering block. Jun 12, 2024 · Add To Cart. HP's are a little easier as the air bleeds are already threaded. The original design was made as a 2 circuit carb. Free quotes are just a PM away. 052 ifr put in lower position . 000" Primary Metering Block: Zinc Secondary Metering Block: Zinc Primary Fuel Bowl: Center Hung Float, Zinc Secondary Fuel Bowl: Center Hung Float, Zinc Carburetor Gaskets, Metering Block, Rubber, Blue, Non-Stick, Model 2300, 4150, 4160, No Accelerator Pump Transfer Tube, Pair. The Idle, Main, Power valve, and Emulsion circuits. 053 Mar 21, 2021 · The metering blocks really determine what the main body will be. Includes (2) fuel bowl gaskets and (2) metering block gaskets. com FREE DELIVERY possible on eligible purchases Jul 4, 2020 · 6883 posts · Joined 2013. Find many great new & used options and get the best deals for Holley+3+Circuit+Dominator+Metering+Blocks+With+Gaskets at the best online prices at eBay! Free shipping for many products! Application Specific Parts. Mr Gasket Push-On. All Hose Groups. Fuel Bowl Gasket Included: Yes. NON STICK METERING BLOCK GASKET for HOLLEY DOMINATOR. Alcohol Metering Block using 5/16-32 main jets. 95/ea. Aug 5, 2016 · Sec. That's one of the reasons most 3 circuit conversions usually move to a 2 circuit metering block. 00. Oct 11, 2021 · The restrictors located behind the power valve are called power valve channel restrictors (PVCR). Price: $53. Motor was tuned on the dyno for WOT, but just seems lazy getting there off the line and some stumbles along the way. Both have the same intermediate air bleed. It was built with a Holley 1150 HP body and #71111 prosystems metering blocks for a mild 572. 408 in stock. BLP makes a wide body metering block that can be 2 circuit or 3 circuit. Product Search. A big-cam engine needs a higher idle speed, which is usually about 1,000 rpm; a regular street cam needs about 600 rpm. Jul 17, 2010 · 4507 posts · Joined 2007. Mar 2, 2016 · Double pumpers were 2 circuit. Photo of this type below. Speedmaster fully adjustable metering blocks allow you to stay in complete control of your carbs fuel delivery. $26. 99. As long as your combo doesn't require any more fuel than that your ok with the tube in there. $85. 3 circuit that incorporates an idle tube in the main well. SKU. $12. Standard calibration for out of box performance - designed to fit Apr 19, 2012 · Buy JEGS Metering Block Gasket Set | Fits Holley 4150, 4160, 2300, and 4500 (2-Circuit) Carburetors | Made in USA | Includes (2) Metering Block Gaskets: Carburetor & Fuel Injection Mounting - Amazon. 51241B-3R-FE 3 hole emulsion configuration. 31. Product Description. by andyf » Sat Jul 19, 2008 3:21 pm. The emulsion bleeds you mentioned are the two, three, or sometimes five little restrictors Details. Improved throttle response over stock, fully tunable for street and strip applications. METERING BLOCK 2 CIRCUIT BILLET. Work great. . 51241B-5R-FE 5 hole emulsion configuration. jets and components sold separately. These are the finest metering blocks available on the market today. tsr . Genuine Holley QFT AED CCS Demon 20-12 Accelerator Pump Cam Assortment. View Details. The lower placed holes say in metering block (A) would give a richer overall mixture sooner than the the higher placed holes in metering block (B) since the upper emulsion holes Mar 16, 2016 · Looking at doing some upgrades to my 1150 2 circuit dominator, mainly by changing the metering blocks out to something better. not hard to do, but time consuming. CNC cut from premium aluminum and filled with precision parts, these blocks provide the ultimate platform for your performance carburetor. And for 6-32 bleeds or idle jets, get a 1-60 and 61-80 and drill your on. Jul 19, 2008 · Location: Oregon. The tube can become a flow restriction when you eliminate the intermediate circuit and try and put all the fuel through the main/booster circuit. I do have access to a wideband oxygen sensor kit to aid in tuning. I have purchased a set of cast metering blocks that have been modified for adjustable bleeds. There are 4 circuits to a metering block. $99. 6% positive. they copied what was at the time, the Mopar 383-440 emission metering blocks, which were 3 circuit. Retains vacuum passage for distributor vacuum advance. It was 2 circuit. Open today. May 19, 2005 · Holley developed the 3-circuit Dominator around 1970. Since it an annular old style, it is going to be a 3 circuit unless someone put 2 circuit metering blocks on it. No one had 3 circuit carbs normally. 34-106QFT. It requires bending the pump arms and longer bowl bolts, but is a adjustable as you would ever want. 082. This metering block utilizes the BLP XH-Series main jet. Quantity: Sold in pairs. 50 083932 Gasket - Metering block vertical premium, 7395: Your Price: $6. Constructed from a non-stick material. Product ID: BLP51251K-5R-B MFG: BLP RACING PRODUCTS. Reply. Metering Block - 2 circuit without power valve and 4-corner idle - Our billet aluminum metering blocks are machined to very strict tolerances then anodized for protection and good looks. Only the secondary side has altered booster location making standard Holley metering blocks a no-fit on the rear of the 3 barrels. Find many great new & used options and get the best deals for Speedmaster Carburetor Metering Block Pce118. Application Specific Parts. These are a 6-32 thread size. Sold Individually. SKU: 7111Category: Metering Blocks. 35 08412 Gasket - Float bowl premium, 7520/ May 11, 2016 · Re: 2 Circuit Dominator Conversion. 5 %µµµµ 1 0 obj >>> endobj 2 0 obj > endobj 3 0 obj >/Font >/ExtGState >/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R Quick Fuel Billet Metering Blocks 34-77QFT Metering Block, QFX 3 Circuit, 5 Emulsion, Billet, Red Anodized, QFX and 4500 Series Carburetors, Each Part Number: QFT-34-77QFT Feb 13, 2007 · Re: 2-circuit Metering Block Emulsion Tuning questions. Kit includes a longer transfer tube and longer fuel bowl screws. 80 / EA. #10 · Jul 3, 2016. Holley and a lot of other places sell separately and new, the correct blocks for 2 circuit Dominators; regular and adjustable billet. 9375-1 (1050 cfm) intermediate feed = . If it wont run properly I will look further into the conversion or sell it. I don't have a Chevelle, but I wish I did!! 69 Corvette Stingray. sec, dual feed, single pump, date code 1234. 38" Primary Throttle Bore Diameter: 2. In house Flow Bench services. Available in Red or Black. I have a set on my 1250, set up for 2 circuit, lower idle feed restrictors, 2 . Notes: Completely adjustable 3 circuit. Our billet aluminum metering blocks are machined to very strict tolerances then anodized for protection and good looks. Original Holley is easier because with the billet you have to do the brass E-bleeds in the right configuration for the E-holes and the originals are already. Part Number: 793-34-133QFT. 2 circuit with 08030232 Gasket - Metering block 3-Circuit premium : Your Price: $6. Jun 30, 2016 · 2079 posts · Joined 2010. There are several reasons for changing the metering blocks, not just going to 2 circuit. Holley 8896. They are generally the same thread size as the emulsion restrictors that are located in the main well of the metering block. 2-Circuit Metering Block Gasket. Retains AED Performance Billet Metering Blocks are made from T-6 Billet aluminum and feature our latest in fuel circuitry innovation. Part # 7111. The main well exits are Jul 27, 2015 · Here are the steps for calibrating the idle mixture: Progressively turn the idle-mixture screws in. 29. Converting a Dominator to a 2 circuit is easy enough to do with a couple taps and a few drill bits and some patience. I've done quite a few back-to-back dyno tests and if the carbs are working correctly there isn't any real difference in power. 302 main well exit Venom II Metering Blocks. **Available now as an upgrade for all Pro Systems 4150, SV1 and Dominator carburetors. The BLP blocks are redesigned so that the idle tube doesn't share space with the main well like it does on the Holley block. Jan 17, 2021 · 2 circuit blp metering blocks. I got a set of these BLP metering blocks the other day to use on my 80672 Holley Dominator. Categories May 26, 2024 · Description. by jmarkaudio » Tue Oct 16, 2007 12:55 am. 610 thick,610, alcohol, alky OE Holley 3 circuit metering block. Uses standard 1/4 x 32 Holley® jet thread. Add to cart. Holley Blue Non-Stick Carburetor Metering Block Gaskets 108-91-2 Carburetor Gaskets, Metering Block, Rubber, Blue, Non-Stick, Model 2300, 4150, 4160, 4165, 4175, No Accelerator Pump Transfer Tube, Pair Sep 6, 2015 · For metering blocks, 5124 2 circuit or 5120 wide body 3 circuit for gas. It used metering blocks similar to the 850 double pumpers. WD for Cometic & Manley. Carburetor Gaskets, Metering Block, Rubber, Blue, Non-Stick, Model 2300, 4150, 4160, No Accelerator Pump Transfer Tube, Pair. Is this correct? Mar 29, 2007 · Two identical carburetors ran on the same engine with exception to vertical placement of the emulsion holes will emulsify the fuel at different points in the rpm range. 00 per block. 690" Base Plate: Billet Aluminum Base Plate Pattern: 5. Billet Metering Block Standard Calibration - Our billet aluminum metering blocks are machined to very strict tolerances then anodized for protection and good looks. Plugs stay clean and idles 950 rpm in gear. 87 @ 124 mph (full street trim) all motor, only trip to the track. SKU: 800070 Categories: Carburetor Parts & Accessories, Gaskets, Metering Block Description Holley Metering Block Gasket for 2 Circuit Holley cast carburetors are manufactured in house by APD, and made from reusable MP-15 material. 026 2,3,5 blanks. I plug the intermediate on the wide body but it is still available, and the kill bleed is adjustable. The primary side of the 3 barrel is exactly the same as an 850 Vacuum or 850 DP. Billet Secondary Metering Block. 63 Corvette A-gas / Top Sportsman. Then Holley worked with Ford in the Nascar program and the sand cast 1050 4500 carb was created. 19. 035” idle feed restrictions. Available in 3 or 5 hole emulsion configuration. Oil & Cooling Systems. Mar 29, 2015 · Type 1 is where the jet can bee seen without any further disassembly of the metering block than removing it from the carburetor body. Holley Qft Aed Ccs 750 Cfm Pro Billet Metering Block Kit 2 Circuit 5 Emul Black. Having some tuning issues off the line and not so crisp throttle response. Also in Plumbing AN Fittings and Hose. FEATURES: Compatible with methanol and racing gas Non-stick fluorocarbon release Coating is applied for easy removal Metering block gaskets have a . Seller's other items. Billet Secondary Metering is handled by billet aluminum metering blocks that are fully adjustable and available with either 2 or 4 circuit metering. PCE fully adjustable metering blocks allow you to stay in complete control of your carbs fuel delivery. by andyf » Mon Jul 14, 2008 2:01 pm. The 2 circuit 4575, 6214, 6464 were the about first dominators used for drag racing. 95. Sec. 51241B-5R-FE. 024, plugged, plugged, . Metering block gasket Barry Grant King Demon 1095 ,3 CIRCUIT METERING BLOCK GASKET Holley 1050 Dominator, Holley 1150 Dominator and Holley 1250 Dominator 108-121. Primary takes a regular Holley metering block. Old-school Holley blocks or billet, whichever suits your fancy. Okay, After reading lots of posts I think I am close to making the conversion. Available in Blue. I also have some info on intermediate circuit blocks that might be of interest. Complete 2 circuit 4150, Gas, Performance Series. Black Bright Dip Anodized. These Metering blocks have completely adjustable emulsion, idle feed, and power valve restrictions for the most discerning carburetor builder. Jul 14, 2008 · A fix for some 4500 three circuit problems. Condition: 2 Circuit Gas billet metering block Low Idle. Either the Holley or Quick Fuel body is fine, i build mostly with the Quick Fuel bodies. Jul 1, 2008 · The layout for HP carburetor metering blocks and Dominator carbs will look slightly different from this standard Holley two-circuit metering block, but most of the circuits are exactly the same Oct 13, 2007 · Dominator 3 to 2 circuit. $229. Pettis Performance 565 with two stages of Nitrous Supply nitrous systems. often the timeslips don't improve with jet changes, or even when the jets are removed completely. Metering Block - 2 circuit without power valve and 2-corner idle - Our billet aluminum metering blocks are machined to very strict tolerances then anodized for protection and good looks. However one issue seems to be missing. CNC cut from premium aluminum and filled with precision parts, these blocks provide Mar 21, 2004 · 165 posts · Joined 2002. If you use emulsion for much more than correcting the fuel curve you can introduce instability in fuel delivery. BLP sells 16 . Adjustable AED Performance Billet Metering Block (Alky) 4150 Part # 6581. Proform. Fuel System Components. #1 · Mar 21, 2004. $25. Billet Metering Block Kit E-85 4150 Style Carburetors- Fully Adjustable Our billet aluminum metering blocks are machined to very strict tolerances then anodized for protection and good looks. Hardline. 028" emulsions. Calibration upgrade without sacrificing street vacuum provisions. A 3 circuit Dominator will have 3 air bleeds for each barrel, a 2 circuit will have the outside bleed un-drilled or plugged. Classic finish Fits 4500 series Holley Dominators 1050 1150 1250. Details. The engine can now safely operate at a lower BSFC, and when properly tuned produce improved on track performance, fuel mileage, and engine life. Probably start with a pair of 90 jets. 041”. Made in usa with high quality components and assembly. Price $99. 38" x 5. (58461) 99. $ 79. Price $111. and replace and reduce the diameter of the main air bleeds. #6 · Jul 18, 2014. 00 Metering: 2-Circuit Primary Venturi Diameter: 1. Gasoline Billet Metering Blocks. Hose Protection, Sleeving & Clamps. I would attempt to run it on a mild 572 on the street, so I wanted to convert to 2 circuit. <br /> 8-146 Square flange carburetors 3 circuit, non-stick; 2 ea. 057 int bleed n/a pvr . 1144 posts · Joined 2008. BLP offers several versions of metering block and fuel bowl gaskets. Type 2 has the jet under the outer most two 1/4 inch cup plug locations on the top of the metering block. by BLACK BART » Tue Feb 01, 2011 7:58 am. Price $127. Do I have the right metering blocks on this carb? Both metering blocks have 33101 hand stamped on them, also front primary block has #5271 & rear secondary block has #7003, both also hand stamped. Holley 4160 4-barrel Carburetor Carb Primary Metering Block 6779 6777 Ihc 392. Selected accessories will also be added to cart. Weight: 1. Product Q&A View Now. If your carb is too rich at part throttle due to the intermediate circuit, and it's equipped with jets, can't you just jet it down some Apr 22, 2019 · Holley offers two different metering block conversion kits. Part Number: 51351-5H-B. 09:00 am – 09:00 pm. #4 · Jul 18, 2010. Hose Ends. Must-have when doing maintenance, tuning, and upgrades. Been running a 3 circuit 1050 dominator for years on the street. Nov 10, 2014 · Not always that simple. 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 Not Yet Reviewed SKU: 800042 Categories: Carburetor Parts & Accessories, Gaskets, Metering Block Description APD Metering Block Gasket for Elite/Low Series carburetors (2 or 3 circuit)are manufactured in house by APD, and made from reusable MP-15 material. Earls Classic Hose and Hose Ends. Black Anodized Finish. Carburetor Collectibles Specialty. 25 lbs: Dimensions: 4. Part # 6580. 08372 Gasket - Metering block 4-Circuit premium, 4825 D/quad: Your Price: $7. Billet Aluminum 4 Barrel Carburetor 2-circuit Metering Block. 59 Dyno Pack Gasket Kit (10 each) – 4150/4500 Metering Block Gasket (Holley 2 Circuit) $ 32. It was designed so that each worked in succession. Not sure about your carb but I just put a large air bleed (100+) in the intermediate circuit. Contact seller. 25 × Apr 3, 2024 · Holley QFT CCS 1050 CFM Pro Billet Dominator Metering Block 2 Circuit 5 Emul. Speed-Seal and Speed-Flex. Metering Block Gaskets Included: Yes. Catch Tanks. Bests: 1. $214. 026 MAB. Sep 26, 2022 · E. 032 air bleed . A part # will help. Power valve channels are lowered. Start with a quarter turn on each one and readjust the idle speed to an appropriate RPM. 032”. No Interest if paid in full in 6 mo on $99+ with PayPal Credit*. A stock Holley 3 circuit block will hit a wall at about 91 or 92 jet. The number “35” will be stamped on the head of these restrictions. They are 2 circuit blocks and work fine on a Dominator, you only need to open the angle channels up CAREFULLY to about . #10 · Sep 28, 2022. 86 out of 5 stars All fuel circuits are fixed. AED Performance offers our exclusive T-6 Billet aluminum metering blocks for the ultimate in fuel curve tuning and adjustability. Quantity: Details; Mar 23, 2013 · 8-131 2-circuit, with acc. Competition Series. My records show the #11166 block to be a primary block for a 4779DP. Performance Series. 51701-5R-FE. 3. The emulsion holes, the five emulsion bleeds in the serpentine slot are pre-calibrated. I would suggest starting with . And I prefer annular boosters, using more smaller discharge holes are the best. 454, 6 speed, 11. pump cutout, non-stick; 2 ea. This screw-in restriction controls the fuel side of the idle and off-idle air/fuel mixture. Our standard metering blocks come with fixed orifice sizing and a great tune up right out of the box while our Pro Series blocks come with screw in restrictors and feature 5 emulsion bleeds for maximum performance Metering blocks can be custom built with your specifications or purchased bare for the professional carburetor builder. AED Performance Billet Metering Blocks are made from T-6 Billet aluminum and feature our latest in fuel circuitry innovation. Jan 28, 2011 · Re: HELP!!!Holley metering block ID. $ 2. The #6541 and #11180 blocks to be primary blocks for a 4779DP. Trending at $27. 050. 2 days ago · Fits holley 4150, 2300, and 4500 (2-circuit) carburetorsIncludes (2) fuel bowl gaskets and (2) metering block gasketsConstructed from a non-stick materialMust-have when doing maintenance, tuning, and upgradesMade in usa with high quality components and assembly. 160, and move the idle feed location. Some engine builders have had problems getting Quick Fuel Billet Secondary Metering Block 2-Circuit without Power Valve. Dec 10, 2013 · Thanks Nitrous Supply 714 373 1986. 1003 Billet Aluminum at the best online prices at eBay! Free shipping for many products! Apr 15, 2020 · I have never owned a 3 circuit carb and I am not sure about tuning. $78. 039”. Additional information. Adapters. $79. Plumbing Tools. Availability: Out of stock. Barry Grant Race Demon Part# 123250This is a brand new pair of race Demon alky (alcohol) billet 2 circuit per pattern metering blocks, Part# 123250 they fit 650 / 675 / 750 / 775 / 825 CFM Drag race and oval track Demon carburetors, this set of metering blocks comes with new bowl gaskets. Other blocks will work when modified correctly but, if you don't know what you are Jul 29, 2008 · the fix is, open up the idle air bleeds, and intermediate air bleeds, a dramatic amount. Those look like 34-105 Quick Fuel blocks with their name engraved on them. This is for people who don't know what they are doing and need to take the cheap way out. These plugs must be carefully removed to gain access and clean the jets. Click image to zoom. Part Number: 51251-5R-B In the 1980s BLP Products was the first to introduce a 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 Not Yet Reviewed Apr 4, 2017 · Check to see, but I would assume the idle feed tube is in the main well on those 3 circuit metering blocks. The Holley 4 barrel design patent was filed in 1956, patent below. Description. Distributor for Ultimate Converter, Holley, PAC, MSD, Eagle Products, etc. 2 circuit with standard 1/4 x 32 Holley® jet thread. These came from a 3 circuit ProSystems 1150 that I acquired. The first is the idle and transition metering thru the idle jet and tempered with the idle bleed. The one we'll use for this story is aimed at the 0-3310C but there's also a conversion for the 600-cfm single inlet 0-1850 carburetors. Part Number: HLY-108-89-2 4. The three circuit carbs can be dialed in without too much trouble. Holley Carburetor 30cc accelerator pump ethanol alcohol. The second is the main circuit. 3310-1 780 vac. Its an old style. 038 emulsion bleeds, 1 & 3 . The results are a much more manageable carb than the original without a large expense to the pocket, depending on what you want to use for metering blocks you can make the change for under $100. Our metering blocks are machined from solid billet aluminum and all circuits are threaded for tuning by changing the restriction size that is in the passage. Qty: Product Description. My two circuit 1150 comes up on the brake with absolutely no issues. Quick Fuel 3 circuit block intermediate feed = . Jul 18, 2010 · by MrBo » Sun Jul 18, 2010 3:26 pm. I ASSumed that it was a 3 circuit carb, due to the body having the needed air Holley 4160 4-Barrel Carburetor Carb Primary Metering Block 6779 6777 IHC 392. Work from there. The factory Dominator blocks feed the idle circuit from separate holes next to the main jets. If you're metering blocks are drilled and tapped for jets in the idle and intermediate circuits Nov 19, 2011 · That will tell you. Complete 2 circuit 4150 Alky. %PDF-1. It has 3 air vent per barrel. 5 Powervalve in the primary and have the linkage adjusted progressive. There is no intermediate circuit required to assist in throttle response and shift recovery (like most 1050 cfm and larger four barrels prefer and require). by jmarkaudio » Fri Dec 09, 2011 4:47 pm. CNC cut from premium aluminum and filled with precision parts, these 3-Circuit Metering Block Gasket with Holley ® and Braswell™ Intermediate Locations. 86 out of 5 stars Jul 18, 2014 · 10507 posts · Joined 2009. pu wz cg oo dv cc hs nq hc mb