Holley 4165 Vacuum Ports

Metering blocks are hand selected and all circuits and passages are checked for casting flaws and obstructions, as well as proper sizing; Metering block design is selected based on your engine combination. Vacuum secondaries are more fuel-efficient because they do not open until the engine needs more fuel. I double checked my vacuum gauge with a loaner vacuum pump from Advance and it checked out fine. All you’ll need is a screwdriver and a good vacuum gauge. Hedman Hedders & Trans-Dapt Performance Products are two of the hot rod industries original manufacturers, dating way back to 1954. Easy to use parts catalog. Up for purchase we have a High Flow Holley double pumper carburetor. A two-stage valve provides for slight enrichment during medium accelerations, which will often prevent manifold vacuum from dropping low enough to open the second stage of the power valve. Shop by Emissions. Part Number: 1906 Notes: The 1906 AVS2 carburetor is an upgraded version of the 1406 (SKU 38901) with a new calibration for improved performance and drivability. The full manifold vacuum source in the front of the throttle body provides vacuum for proper operation of the air cleaner, the pump diverter valve (if equipped), AC/Cruise, and/or the temperature sensing valve. It made all the difference. You may want intake vacuum or ported-vacuum for your distributor advance. Mechanical secondaries are linked directly to the accelerator pedal and can get poorer fuel mileage than a carburetor with vacuum-secondaries. It has a large hose fitting at the back of the baseplate. If vacuum for more than one component is needed, use small plastic vacuum fiTfls (available at most automotive stores). Holley 750 Vacuum Secondary Carburettor 3310-2 Holley Vacuum Secondary carby in good condition. Since the beginning of the 2300, 4150, 4160, 4165, and 4175 model production, there had been a common problem of blowing the power valves. I've got a pair of Holley 94's on my Dodge flathead 6. Towards the rear of the carb on the same side is a large port for PCV. I always just tighten the screws with a screwdriver, but now i'd like to put a torque wrench on it. Use the keywords and images as guidance and inspiration for your articles, blog posts or advertising campaigns with various online compaines. Caps are availalbe at your local parts store (try the "HELP" display). Model: 4150 4 barrel. Our new billet baseplates are CNC machined with or without vacuum ports & offer added performance & durability. (Check out the AED 4165 for the Spread Bore Double Pumper Carb rebuild kit) >Possible Holley Spread Bore carburetor list numbers (Contact us if you are unsure o. The primaries in such a carburetor are quite small relative to conventional four-barrel practice, while the secondaries are quite. Fuel mileage is good. What torque do you guys put on them, and what does holley recommend? I've tried a Buna-N gasket, cork, and now the stock coated paper gasket. 76 four vacuum. Edelbrock Part # 8096 Vacuum Adapter Fitting is a low profile elbow that is designed to provide clearance for Holley and other carbs with a rear fuel bowl that extends over the vacuum port tap in most intake manifolds. port properly. Models 4150, 4160, 4165, & 4175 1. Find throttle stops with a. holiday inn, independence "KARAOKE WITH DJ JOHN" @ twenty 20 taphouse, belden village holiday inn, canton. I have the Vacuum ports for the brakes, and distributor hooked up, but I noticed that there are two ports on the front of the carb, on the passenger side. Does the vacuum advance of the distibutor connect at the baseplate (manifold vacuum) or on the side of the metering plate (I think ported vacuum)? 2. The full manifold vacuum port will not. holiday inn, independence "KARAOKE WITH DJ JOHN" @ twenty 20 taphouse, belden village holiday inn, canton. Each Street Avenger also has 4 vacuum ports for accessories such as PCV, power brakes, vacuum advance, etc. The ported spark advance port has 13-15# at idle with 20+ at 3000 RPM. It has to be hooked to a vacuum port that only has vacuum on it when you give it gas, That is. New 3-14-01 This tech paper will discuss basic set-up and tuning of Holley vacuum secondary carbs for optimum street performance and drivability. Accessibility Help. These ports, the venturi vacuum port and the manifold vacuum port, provide a balanced vacuum. The two ports you have there on the carb I've always seen the larger one, which is manifold vacuum, connected to the PCV line. This is the Street Avenger so there is another 3/8" one on the front for PCV. A 4165 Holley 800 CFM carb (mod 6212), out of the box stock in every way, made 490. Its also a good product for the price. The primary metering block is more like a 4160/4150 block, it doesn't have the accelerator pump check ball in the block like most 4165/4175 most do, it has. 78286 72914. Summit Racing Equipment. Scribd is the world's largest social reading and publishing site. If there is a fly in the Holley ointment, it's setting up the idle. 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks - Holley 4180-vacuum diagrams, fuel return - 1984 460, F-350 Class C motor home. The other port is a "timed" port, which only yields a vacuum above a certain rpm. Holley 26-105 Vacuum Line Cap Kit in Carburetors & Parts. Trying to find single port? Our team focuses on a huge catalog of Single Port. Everything you ever wanted to know about Holley Carburetors is included in this 2-hour DVD. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. If I need to post more pictures then let me know, thanks. four vacuum Ports. I took it apart again and followed the passage from the port, through the metering block, and it goes right to a hole in the body that comes out on the bottom of the carb, below the throttle plates. It's a Holley 4165 double pumper with a singlet inlet and divorced choke: The carb I took off was a very similar Holley 4165 single pumper with vacuum secondaries:. AFAIK, the Holley 4150/60 & 4165/75 should each demand the usual 4. the metering block must be slightly warped. Find Holley Vacuum Line Cap Kits 26-105 and get Free Shipping on Orders Over $99 at Summit Racing! Holley vacuum line cap kits feature a selection of different sized vacuum tube caps. We feature a quality array of products at reasonable prices. , (Also available separately: Spread Bore Vacuum Secondary Carb rebuild kit, AED 4175). At idle, the fuel enters the carburetor throat through one or small small idle ports just above the throttle plate. Mike Dailey's Pantera engine with an aluminum 4V Edelbrock Performer Intake manifold and Holley 600 carburetor with vacuum secondary and electric choke. Available separately are both the rotary-tuned Holley carburetors and Racing Beat intake manifolds for various 12A & 13B rotary engine applications. Belt Camshaft Crankshaft Mount Oil Pump Vacuum Pump Block. Its also a good product for the price. Find 04 Port In Stock Now. The Holley 0-80670 Street Avenger 670 CFM Square Bore 4-Barrel Vacuum Secondary Electric Choke Carburetor are best quality product. Vacuum to operate the spark advance in the primary throttle range is furnished by ports in one of the primary bores. pdf), Text File (. The other type of vacuum connection on a Holley is ported vacuum, which is weak at idle, strong at cruise, and weak at WOT. Made of Buna Rubber. 4 corner idle. I have the Vacuum ports for the brakes, and distributor hooked up, but I noticed that there are two ports on the front of the carb, on the passenger side. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro-Stock champion for four decades. PURPOSE: The Holley Dominator II Manifold, 300-36 has been designed for use on small block Chevrolet engines (265-400 C. Both carbs are casting number 8BA, but neither have the vacuum port for the vacuum advance. I am rebuilding an older Holley 700 double pumper 4778-1 The primary metering block number is 47781 8394 There is no timed port on the metering block, and when I use air to blow in the space it looks like it should be nothing comes out of the metering plate, I also do not see a hole in the groove on the plate where the timed port usually has one see picture (G is the hole for the timed port). Key Features Include: No Trouble quick change vacuum secondaries; Vacuum secondaries allow use on wide variety of vehicles; Dual feed fuel inlet. It is a 800 CFM, double pumper, model 4165, 4 four barrel carburetor. 7 hours ago · Part numbers 4235 and 4236. Holley model 4165 and 4175 carburetors are considered universal Q-Jet replacement carburetors and are easily identified by these features, single-inlet, side-hung bolt float bowls, a primary metering block, no secondary metering block, and no accelerator pump on the rear bolt. Here's the new carb. Vacuum port for AT almost always comes off an intake port/nipple. Fixing Yesterday's Mistakes. Holley® being an undeniable leader in fuel systems for over 100 years, Holley offers a wide range of performance carburetors, fuel pumps, intake manifolds and engine dress–up products for street performance, race, and marine applications. And also, what vacuum port is what? The big one is PVC obviously but wich one of the small ones is ported and manifold vac? Would really appreciate it, my 600 edelbrock seems like its not really up for the job anymore, im going for a quickfuel 650 DP later but i was thinking i could use this holley for now since i could borrow it. Sniper EFI "Dual Plenum" Intake Manifold 102mm throttle body bore for GM LS3/L92 engines (Includes TB spacers, installation kit, and fuel rail kit) Silver Finish Holley continues to push the envelope of intake design with its latest offering. The front port is for the PCV valve. On a street legal truck, run an additional 10° of vacuum advance, connected to the 'timed' vacuum port on the carb. The idle discharge port is the hole in the throttle-body wall. There is no manifold or timed spark port vacuum. Holley model 4165 and 4175 carburetors are considered universal Q-Jet replacement carburetors and are easily identified by these features, single-inlet, side-hung bolt float bowls, a primary metering block, no secondary metering block, and no accelerator pump on the rear bolt. Usually the power brake booster has it's own 90 degree port in the intake manifold. it is not a complete list of all carbs made by holley over the years. If vacuum for more than one component is needed, use small plastic vacuum “T”s (available at most automotive stores). If this is your first visit, be sure to check out the FAQ by clicking the link above. From replacement fuel bowls to power valves and jets and everything thing in between. Trying to find single port? Our team focuses on a huge catalog of Single Port. And of course, all unused vacuum ports should be capped of with a. Pictures:. When I originally built my 383, I had problems getting to idle in gear. If this is the case, buy a Chilton's or Haynes maintenance and repair book on your *particular car from an auto parts store to see if you should pull manifold or port timed vacuum *above the throttle plates. Up for purchase we have a High Flow Holley double pumper carburetor. Vacuum port for AT almost always comes off an intake port/nipple. Holley modifications are nearly endless thanks. Holley 4165 Series Carb Rebuild Kit For 650-800 Cfm -dp- Spread Bore - Internal. The spread-bore design allowed the 4165/4175 Holley to bolt directly into place without an adapter. you don't need the secondary and shoul leave it plugged. It holds and seals tight. Get your Port 6 today on the internet!. How does it speeds up of everything you ever wanted to the shelf at holley carb 650 cfm carb. Carburetor Vacuum Ports: Manifold, Ported and Venturi Vacuum Explained by Lars Grimsrud Colorado Corvette Crazies The Ultimate Corvette Tuning and Beer Drinking Fraternity Lafayette, CO Rev. Read the tech article on a Holley Vacuum-Secondary Operation, brought to you by the experts at Chevy High Performance Magazine. The carburetor installed on a stock 1979 Ford F-350 is a Holley 0-90470. Kia, THE COMPANY Thank you for becoming the owner of a new Kia vehicle. Given that, from the outside, they appear like a conventional distributor and from the inside, their principles are a little obscure, here is an explanation of how the Load O Matic works. the metering block must be slightly warped. Since the beginning of the 2300, 4150, 4160, 4165, and 4175 model production, there had been a common problem of blowing the power valves. You will not find a better kit than this one. 850 CFM STREET HP MECH SEC; Vibratory Polished For Good Looks. 1962-1974 Nova Holley Carburetors Parts. Cfm: 600 Straight leg discharge boosters. The front port is for the PCV valve. This is a discussion on Vacuum source within the General Help forums, part of the LSx Technical Help Section category; Hi folks! I've looked through the stickies and didn't see what I needI installed a Gen III 6. The vacuum at this location varies with throttle setting. This carburetor has 2 vacuum ports. Holley 750 Vacuum Secondary Carburettor 3310-2 Holley Vacuum Secondary carby in good condition. A very nice and quiet community. It doesn't happen every time. Holley, Dominator HP Carburetor, 3-Circuit Dominators (2x4 Carb Set-ups), 1050 cfm Contoured venturi inlets, for maximum flow and reduced turbulence. The primary metering block is more like a 4160/4150 block, it doesn't have the accelerator pump check ball in the block like most 4165/4175 most do, it has. The idle/transition circuit relies on the high vacuum at small throttle openings. AFAIK, the Holley 4150/60 & 4165/75 should each demand the usual 4. Part_Num CFM Model Jet Front Jet Rear PV Front PV Rear 1848-1 465 4160 122-57 134-3 125-85 1849 550 4160 122-62 134-5 125-85 1850 600 4160 Universal Application, vacuum secondaries, non-emission, man. (Check out the AED 4165 for the Spread Bore Double Pumper Carb rebuild kit) >Possible Holley Spread Bore carburetor list numbers (Contact us if you are unsure o. The 6210-3 and 8679 carburetors have been designated and calibrated as direct “bolt on” replacement carburetors for 1965-1970 Chevrolet. There should be another port on the passenger side of the carb that is located on the metering plate (located between the float bowl and the carb body). Troubleshooting Your Holley Carb August 2, 2017 Wayne Scraba Fuel Delivery , How-To and Tech Tips , News 1 Holley carburetors find their way onto countless vehicles, from race cars to hot rods to delivery trucks, and for good reason: They're the standard of performance, and without question some of the most popular and easily tunable. How does it speeds up of everything you ever wanted to the shelf at holley carb 650 cfm carb. Our new billet baseplates are CNC machined with or without vacuum ports & offer added performance & durability. This carb was rebuilt 2 years ago and runs flawlessly, except not pulling any vacuum. Images via holley carburetor electric choke in this dvd. Given the sheer numbers of carburetors made since the 1950s, you know they work. That Idle vacuum does seem low but we know nothing about the engine and the camshaft that's in it. Choosing the Right Power Valve for Your Holley Carburetor April 14, 2015 Randy Bolig Drag Race 101 , General Engine , Guest Columns , How-To and Tech Tips , Tech 5 When it comes to tuning a Holley carburetor the power valve has always seemed a mystery to many. One kit covers all Holley Spread bore Double Pumper Carbs: 650 800 etc. I'm confused on this whole vacuum port thing on the Quadrajet. On Carter/Edelbrock carbs, the timed port is on the passenger side and the full is on the driver's. They are also used as a double pump performance upgrade while using the original Q-Jet type spread bore intake. Holley has been the undisputed leader in fuel systems for over 100 years. How to tell what size carb you need: You take the engine cubic inch and multiply by the maximum RPM and divide by 3456. Here is a wonderful image for holley 4150 vacuum port diagram. You should plug the ports you don't need with a vacuum cap. Failure to follow these instructions may result in poor performance, vehicle damage, personal injury, or death. Holley 750 CFM Ultra Double Pumper Carburetor 0-76750RD four vacuum ports for all necessary vacuum accessories; and for the first time on a Double Pumper, factory. 4 corner idle. Overview Holley carbs have been used by hot. I was able to purchase a new old stock vacuum advance for my 1955 Thunderbird. Holley also incorporated their Gen IV power valve with million mile blow out protection. It has become a popular choice as an affordable, vacuum secondary 750-cfm carburetor. Holley carburetors feature idle mixture screws which control the air/fuel ratio and these are usually the main culprits in an improperly idling carb. If I need to post more pictures then let me know, thanks. The full manifold vacuum port will not. Rebuild and Adjustment Manual for Models 2010, 2300, 4010, 4011, 4150, 4160, 4165, 4175, and 4500 WARNING! These instructions must be read and fully understood before beginning installation. And there is no manifold vacuum port on the carb. The bottom one doesn't have the brass tube to connect to either. This home was built in 2011 and last sold on 6/23/2005 for $500,000. In 1992, Holley figured out how to fix an age-old power valve design flaw. I took it back. Holley, Street Avenger Carb, 670 cfm, Manual Choke, Aluminum Designed specifically for the street enthusiast. Browse 2 Port in stock and ready for shipping right now! Vintage Car Parts Store. Holley products for GM's popular LS engine are dominating the LS scene as well. Metering blocks are hand selected and all circuits and passages are checked for casting flaws and obstructions, as well as proper sizing; Metering block design is selected based on your engine combination. Seems to be good quality. Well fiddled around with it and still no vacuum so I rigged it to get vacuum from the intake. Hedman Hedders & Trans-Dapt Performance Products are two of the hot rod industries original manufacturers, dating way back to 1954. When converting the distributors on the Y-Block Ford engines from the original Load-O-Matic (LOM) design to the later model Ford (1957 and up) distributors, the Holley 94's original distributor vacuum port for the distributor will supply an excess of negative pressure or vacumm. On a Holley, that will be the small vacuum port located at the front of the carburetor baseplate (arrow). The 4,165 sq. In order to give you the proper amount of air flow, each carburetor is tested to ensure accuracy. If vacuum for more than one component is needed, use small plastic vacuum fiTfls (available at most automotive stores). Got a new Holley to replace my old of the same model and the vacuum ports are a little different. 0 (LQ4) truck. I always just tighten the screws with a screwdriver, but now i'd like to put a torque wrench on it. 1962-1974 Nova Holley Carburetors Parts. I'm still puzzled though. In this example of an Edelbrock aluminum carburetor, the MANIFOLD VACUUM port should be used for vacuum advance to the distributor and not the TIMED VACUUM for our Chevelles. I believe the boss is to the right in the picture. ) so would I be looking at a measurement more. The front port is for the PCV valve. The metering system includes a timed spark port for a vacuum advance distributor and is calibrated for a hot street and strip engine setup for outstanding throttle response and drivability. HOLLEY 4180. , but I have heavy cam and higher compression (not exactly sure what size etc. Needless to say, I dare say it'll probably be easier to use the 3/8" PCV valve in connection with the Holley, but given the pressure on the line, it begs the following question: Should I go nuts and: A. Holley 670cfm Street Avenger #80712 Electric choke,Vacuum Secondaries in Motors, Parts & Accessories, Car & Truck Parts. Fortunately, I never used this port, so I can just find a plug and cap it off so the carb will fit. Holley 4165 instruction sheet. I'm a mainline user of Q-Jets (and Carter AFB on square bore street engines). Now, Holley EFI products power these cars and are dominating the performance world. The Holley 6210-3 is an emissions-legal replacement for the Q-Jet. advance port at the front of the dist. It is an aftermarket Chevy 350. look to see if the hole for the vacuum advance port has a. This carburetor belongs to the Avenger series and has an air flow rating of 470 CFM (cubic feet per minute). The only thing that it has in common with a QJ is that it is a spreadbore and it has a single fuel connection. The metering system includes a timed spark port for a vacuum advance distributor and is calibrated for a hot street/strip engine setup for outstanding throttle response, drivability and maximum performance. Summit Racing Equipment. The PCV tube, I might add, slides into the 3/8" port at the back, and is sealed with the short bit of hose you see here. Holley 4180 vacuum ports. I have a 3310-3 Holley 750 vacuum secondary carb and have two basic questions about hose connections. With the vacuum linkage installed again, the secondary throttle blades should be open enough to see. Holley Carburetor. Needless to say, I dare say it'll probably be easier to use the 3/8" PCV valve in connection with the Holley, but given the pressure on the line, it begs the following question: Should I go nuts and: A. Having this covered up will cause problems. The Carter BBD is a much better carb and is seldom as unreliable as the Holley. Holley-Vacuum Secondary square bore continued-Holley-Vacuum Secondary spread bore- “general” Rochester Quadrajet replacement [non computor] Holley 650 cfm 4 barrel “4175” Carburetor [NOT Motor-Homes] Features; Can only be used with a spread bore inlet manifold. The ported spark advance port has 13-15# at idle with 20+ at 3000 RPM. The remaining vacuum ports will deliver full vacuum to whatever device is needed. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. Shop by Emissions. 12188 Riverbend Ln , Port Saint Lucie, FL 34984-6426 is currently not for sale. Vacuum Suction Cups Using suction cups is a lifting technique of many possibilities. From replacement fuel bowls to power valves and jets and everything thing in between. Here is the picture off the Holley website. The timed port is typically used for distributor advance, and the full port for accessories such as smog control devices. This Holley carb also appears to have been for '70 California emissions as evidenced by the blocked off vapor port. It made all the difference. Up for purchase we have a High Flow Holley double pumper carburetor. A very nice and quiet community. On a street legal truck, run an additional 10° of vacuum advance, connected to the 'timed' vacuum port on the carb. The description off the Holley website does say "Baseplate designed with a boss that can be consumer machined for vacuum source". Everybody knows about the Holley 3310. This kit may also contain universal part assortments resulting in throw away, or an excess in the number of. four vacuum Ports. The 4165 4-barrel performance carburetor is a spread bore design (with spread bore mounting points) so you can easily replace your worn Q-Jet and expect even better performance. 78286 72914. Buy a 1967 Chevrolet Chevelle Carburetor at discount prices. They both ran well, but that 650 dp spread-bore helped me get as high as 17 MPG on long highway drives. BOSS PAINTER - Learn Auto Body And Paint! 890,932 views. New 3-14-01 This tech paper will discuss basic set-up and tuning of Holley vacuum secondary carbs for optimum street performance and drivability. Aed 4175 Holley Rebuild Kit Vacuum Secondary Spreadbore Carbs 650 800 Holley 4165. Shop for Spreadbore Carburetor today! Holley 4165 Rebuild Kit. 7 @ idle, 5. running power brakes and my holley hp does not have a vac port for power brakes. These were used on the factory LO23 Darts and BO29 Barracudas. You will not find a better kit than this one. In order to give you the proper amount of air flow, each carburetor is tested to ensure accuracy. the metering block must be slightly warped. Mechanical pumps are quiet, require minimal effort to. I'm confused on this whole vacuum port thing on the Quadrajet. Easy to use parts catalog. To access vacuum directly off the manifold,would immediately "pull"distributor to full advance at idle and continually until vacuum drops,under acceleration,then advance would drop back. Today, I tried the other one Timed Vacuum Port "for emission-controlled engines" with vacuum at idle. Holley 4165 Parts Holley 4165 Carburetor Holley 4165 Tuning Holley Carb 4165 [PDF] 1 2 3 Related searches for holley 4165 vacuum ports How to Modify a Holley 4165 Carburetor | eHow www. These are 1" aluminum spacers that have a 1/8" NPT fitting for the vacuum port that is often needed. Fixing Yesterday’s Mistakes. There's a little hole by the throttle blade that is covered at idle and when the throttle is opened, it is exposed to vacuum. The spread-bore design allowed the 4165/4175 Holley to bolt directly into place without an adapter. All you'll need is a screwdriver and a good vacuum gauge. One kit covers all Holley Spread bore Vacuum Secondary Carbs: 650 800 etc. Holley 4165 instruction sheet. However an 1/8" npt --> 1/4" barb wont tap into a 1/2" spacer. This is where the vacuum advance for the distributor should go. You might also hear of a 4165 series, which is also a squarebore, mechanical-secondary double-pumper with metering blocks and. The other day, I had to run it without my PCV hooked up, so I capped the large vacuum port in the front. sporter: EXCELLENT information and pics on the Q-Jet. Each Holley power valve is stamped with a number to indicate its vacuum opening point. This vacuum draws fuel from the float bowl through the idle jet. A very nice and quiet community. That Idle vacuum does seem low but we know nothing about the engine and the camshaft that's in it. com Marine 4150/4160 Vacuum Ports My problem is I can't make hardly any of the numbers match any information, and I can't figure out where the vacuum ports are for my vacuum advance. I have a Holley marine carb that I put on one of my old 302s. Most carburetors have both ports. An 850 cfm "double pumper" turns out to be a 650 cfm with vacuum secondaries. I know its a Holley. A street HP base plate is used so there are plenty of vacuum ports for power brakes, PCV, etc. This Holley carb also appears to have been for '70 California emissions as evidenced by the blocked off vapor port. Each kit contains all parts and gaskets that are necessary to restore your Holley Marine carburetors performance to like new condition. All you'll need is a screwdriver and a good vacuum gauge. Vacuum, Brake Booster, LS6 Intake Mod - HELP. The fuel bowls are side hung with no external float adjust. Holley 26-105 Vacuum Line Cap Kit in Carburetors & Parts. Everybody knows about the Holley 3310. Street Avenger carburetors include quick change adjustable vacuum secondary (tunable from mild to wild), Gen IV No Trouble power valve, clear sight plugs for easy float adjustment, built-in fuel inlet filters, electric choke and four. At idle, the fuel enters the carburetor throat through one or small small idle ports just above the throttle plate. Not sure where the vacuum will come from as it appears if you drill straight you will run right into that screw. The 3/8" port on the rear of the carb is a dedicated brake booster or PCV port per holley. This wasn't a problem with the old carb. Each Street Avenger also has 4 vacuum ports for accessories such as PCV, power brakes, vacuum advance, etc. The engine makes very low vacuum at idle. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. it does fluctuate between 14 and 12 (in time with the rough idle on the engine). Holley has produced carburetors for everything from a Ford Model A to Detroit's classic muscle cars to the race bred Dominators. In 1992, Holley figured out how to fix an age-old power valve design flaw. You might also hear of a 4165 series, which is also a squarebore, mechanical-secondary double-pumper with metering blocks and. Easy to use parts catalog. Shop by Emissions. four vacuum Ports. Made of high quality parts made in the USA. This wasn't a problem with the old carb. Towards the rear of the carb on the same side is a large port for PCV. Holley Stop Idle Stop Sale. Read the tech article on a Holley Vacuum-Secondary Operation, brought to you by the experts at Chevy High Performance Magazine. Long story but had most of the vacuum lines burned off top of motor. I'm confused on this whole vacuum port thing on the Quadrajet. This vacuum draws fuel from the float bowl through the idle jet. ELECTrIC CHokE 570 CFM Four Barrel 670 CFM Four Barrel 770 CFM Four Barrel 870 CFM Four Barrel Model 4165™ oPTional PaRTs & kiTs P/n descRiPTion www. Caps are availalbe at your local parts store (try the "HELP" display). Not all Holley's have the same ports, but you can tell by location and size what each one does. A 4165 Holley 800 CFM carb (mod 6212), out of the box stock in every way, made 490. Since Holleys are so easy to adjust. Now, Holley EFI products power these cars and are dominating the performance world. Tuning a 2300 Holley Carburetor is a straightforward process thanks to Holley's simple design and exterior tuning capability, meaning the carburetor may be adjusted on the fly while mounted to the intake manifold. Carburetor features center-hung floats, power-valve blow-out protection, and the classic gold finish that is distinctly Holley. The carburetor must be totally clean and all passages open to be tuned properly. The metering system includes a timed spark port for a vacuum advance distributor and is calibrated for a hot street and strip engine setup for outstanding throttle response and drivability. Fixing Yesterday's Mistakes. Choose top quality brands Edelbrock, Holley, Uremco. This is used for the distributor advance and needs to be open all the way to the intake vacuum. The full manifold vacuum source in the front of the throttle body provides vacuum for proper operation of the air cleaner, the pump diverter valve (if equipped), AC/Cruise, and/or the temperature sensing valve. WIth iron heads and/or pump gas, limit total advance to 33-34 max. Carburetor Vacuum Ports: Manifold, Ported and Venturi Vacuum Explained by Lars Grimsrud Colorado Corvette Crazies The Ultimate Corvette Tuning and Beer Drinking Fraternity Lafayette, CO Rev. This quick walk-through will get your Holley carb up and running with a perfect idle in no time. Also have 2 vacuum port nipples which race hemi holley carbs never had. Just wondering what people are doing for power brakes and PCV lines who are running this setup, pics would be helpful too. If vacuum for more than one component is needed, use small plastic vacuum “T”s (available at most automotive stores). It's driveability sucked too. Model: 4150 4 barrel. On a street legal truck, run an additional 10° of vacuum advance, connected to the 'timed' vacuum port on the carb. it is not a complete list of all carbs made by holley over the years. Using the PVC port at the back of the carb I have 15# (steady) at idle and 20# at speed. High flow metering blocks. INSTALLATION INSTRUCTIONS FOR MODELS 4165 & 4175 R-6210-3 & R-8679 TO PRESERVE YOUR WARRANTY, THESE INSTRUCTIONS MUST BE READ THROUGHLY AND COMPLETELY BEFORE AND DURING INSTALLATION. The vacuum signal stays high for good throttle response at low and mid range rpms. This carburetor has 2 vacuum ports. Then I tried somethingI turned the idle mixture screws all that way closed (clockwise) to "lightly seated". Less than a comparable zinc carburetor. The idle/transition circuit relies on the high vacuum at small throttle openings. Antique and Vintage Pottery Fine China, Dinnerware, Plates, Dishes, Pottery. 4160 600CFM UNIVERSAL POLISHED. Modifying the Holley Teapot four barrel carb for late model distributors March 2, 2013 Ted Eaton The Holley model 4000 four barrel carburetor that came as original equipment on single four barrel equipped 1956 and earlier Fords, Mercurys, and Lincolns is not up to its full potential when used with the ’57 and up Y-Block distributors. pdf - Free download as PDF File (. If I need to post more pictures then let me know, thanks. Holley 4160 - fuel/vacuum port identification?? July 7th, 2017, 09:45 AM Hey guys - I'm upgrading from my older 880 5. Holley #0-80457-1 Carburetor, 4160, 600 cfm, Square Bore, 4-Barrel, Vacuum, Single Inlet, Electric Choke Features: * Vacuum secondaries allow use on wide variety of vehicles * Electric choke * Single feed fuel inlet * Calibrated for excellent street performance * Ford A/T kickdown, does not work with A.