Square bore vs. Quadrajet (spread bore)? | ClassicBroncos ... Some places indicate it may be universal. Hardware Included Gaskets Included Adapter Finish bNatural Adapter Material Steel Adapter Style Open center Sold as a kit Height (in. $32.95. $6.79. More Buying Choices $27.33 (17 used & new offers) KIPA Carburetor Adapter Manifold 2696 Four-Hole Square-Bore to Spread-Bore Replace for Quadrajet Thermo-Quad Manifolds, 0.850 in. Stay away from Detroit gaskets that many machine shops sell. ooooo. Details. 12-11-2015, 03:21 PM. Edelbrock 2696 Four-Hole Square-Bore to Spread-Bore Carburetor Adapter, Multi, One Size. So I have a Holley Street Avenger 670 and an Edelbrock Performer intake. See More Specifications | Check the Fit. JEGS. Customs services and international tracking provided. This kit install quickly and easily. EDELBROCK 2696 Four-Hole Square-Bore To Spread-Bore Carburetor Adapter $65.99 $57.99 The Four-Hole Square-Bore to Spread-Bore Carburetor Adapter allows proper installation of carburetor to manifold. Details The Edelbrock Square-Bore to Spread-Bore Adapter #2732 adapts square-bore carbs to spread-bore carb pad on Edelbrock intakes. Adapters are made of die cast aluminum. I would think if Edelbrock says it is an AVS it should be spread bore. It allows the use of almost any carburetor on almost any intake, saving . The 1407 Edelbrock carb is based on an AFB style Carter (square bore). You use it to mount a Edelbrock square bore carburetor to a factory stock Quadrajet and thermo quad manifold. Edelbrock Carburetor-Adapter - JEGS High Performance The performance difference between a Performer and a performer RPM is the partial cut out deviding wall between the two sides of the plemun. Did some reading here on the forum- vacuum leak. Square bore carbs have all the butterflies roughly the same size.A spreadbore has much bigger secondary butterflies than primaries.The idea behind the spreadbore is too give you better gas mileage when cruising on the small primaries and still having an overall large CFM when you open all 4 venturies..I'd stick to a square bore for hi performance applications but the spreadbore may have some . It also comes in a kit #2697. Spread bore plate on a 1406 - Edelbrock Community Forum Top Rated Seller. There are square bore only manifolds out there with 2 bolt patterns. Location: MORTUORUM VENATOR - Z.R.T. Why do you think the Air Gap manifold is manufactured only in the square-bore configuration? The manifold flange looks to be spread bore, but it has two different mounting stud positions and the literature is unclear. Details. Mounts Edelbrock square bore carburetors to stock Quadrajet and ThermoQuad manifolds. if you have a spreadbore intake and a square bore gasket you already have what you need to measure.. all you need is some paper and a crayola to make rubbings for the template if you wanna do it the easy way, then just line up the bolt holes on your working stock. Carburetor Heat Insulator #9266 Divided Square Bore Ended (Tomorrow, 9:00) From United States. It mounts the Edelbrock square-bore carburetors to stock Quadra jet and Thermo-Quad manifolds. Free Returns. Designed for 1986 and earlier 262-400 cubic inch Chevy motors. Edelbrock Carburetor Adapter Flange 1949-1953 Ford Flathead 4-bbl Manifold and Square-Bore Carburetors $96.99 Estimated to ship direct from manufacturer on 01/06/22, pending manufacturer availability. Edelbrock spread bore intake with square bore carb ... Spread bore plate on a 1406. Carburetor adapter | Hot Rod Forum or Best Offer. Top Rated Seller. Edelbrock Square-Bore to Spread-Bore Adapter Plate EDL-2732 The Edelbrock Square-bore Carb to Spread-bore Manifold Adapter #2697 is designed to allow installation of the Edelbrock Performer Series carburetor on vehicles with the OEM (original equipment) spread-bore intake manifold (typically GM vehicles that were originally equipped with the Rochester Quadra jet carburetor). Intake Selection; Square Bore Vs Spread Bore | The H.A.M.B. Edelbrock 1406 square to spread adapter question | Hot Rod ... square bore I just installed a square bore Edelbrock carb onto a spread bore Edelbrock Performer manifold and even though it looks a bit weird under the carb,the square gasket actually covers over part of the spread bore opening on the manifold it does not cover anything on the carb, it works like a hot damn. Many of the Edelbrock intakes will accept either carb simply by moving the studs to the second set of bolt holes if it has them. Spacer is 3/4" thick; This aluminum carburetor adapter allows an inexpensive method to mount a performance style square bore carburetor to an original equipment spread bore style intake manifold. Gaskets sold separately. I have a edelbrock 1902 quadrajet and making sure that this will fit my 2701 edelbrock EPS performer intake manifold. Msg. I'm wanting to put a q jet on a square bore flanged Edelbrock intake. - Holley 0-80555C Carb 4175 4-Barrel 650CFM Spread Bore Choke Vacuum Sec Chromate. The square-bore carb (or manifold) is rated 375 CFM both primary and secondary; while the spread-bore carb (or manifold) is rated 150 CFM (200 CFM some models) primary, and 600 CFM secondary. Aluminum Edelbrock 1932 Four-Hole Square-Bore to Spread-Bore Carburetor Adapter. Part Number 2732. Adapters allow a carb with one flange style to bolt to an intake with a different style flange. This gasket features a divided center which will allow dual plane Performer and RPM manifolds to seal properly to the carburetor. 6y. Thick, Fuel Hose, Clamps, Kit Part Number: EDL-2697 Ran fine for about 2 months then started getting surging at idle and while driving. So I installed the e street EFI on a dual plane GM performance intake manifold (12496820) that has bolt holes for both spread and square bore carbs. Mfg# 2696. Carburetor Adapters. )0.093 Gaskets, studs, nuts and washers are included. And no, it won't affect flow in the least. 5.0 out of 5 stars. Part Number: EDL-2732. That intake originally fit the old Rochester 4GC 4Jet carb, (small square bore pattern)..the carb that was replaced by the Rochester Quadra-Jet (spread-bore pattern) in later years. Mounts square-bore carburetors to spread-bore intake manifolds. Just bought a 1406 to replace a Holley 750 DP. By subscribing to JEGS SMS, you consent to receive autodialed messages to the number used at opt-in. The 1969 4640 AVS was a spread bore, which needed an adapter plate to work on my 67 440, which had a square bore intake. Mounts Square-Bore Carbs To Spread-Bore Carb Pad. Overall Height: 0.850 in." Overall Thickness: 0.85" Bolt Hole Pattern: Edelbrock square-bore (Performer or Thunder Series (5-5/32 x 5-5/8 in) carburetor to a stock Q-Jet or Thermo-Quad intake manifold (4-1/4 inch by 5-5/8 inch ) with a spread-bore flange You Save $3.96. Thick, Each. Most of those square to spread bore adapters can be had at any of the chain store parts houses. Carburetor Adapter, 4-Hole, Square Bore Carburetor, Spread Bore Manifold, .850 in. If your manifold does not have the right bolt pattern, Carburetor Adapters are available. It mounts the Edelbrock square-bore carburetors to stock Quadrajet and Thermo-Quad manifolds. Adapter, Edelbrock, Square Bore to Spread Bore. D dubs68camaro Registered Joined Nov 6, 2006 Part Number: SUM-G1401 That means it will mount either a spread bore or square bore carb. Ran fine for about 2 months then started getting surging at idle and while driving. I am currently trying to tune my 1406. $31.99 $ 31. Most square bore gaskets, plates and adapters don't do that. Add To Cart. Square-bore adapter plate measures 1.16" thick. Thommyknocker, Jul 5, 2007. Carb Adapter #2696 Square-Bore Carb to Stock QuadraJet & Thermo-Quad 0.85 in. Carburetor Adapters. Adapts square-bore carbs to spread-bore carb pad on Edelbrock intakes (except 350-2101 & 350-3701) FREE Shipping by Amazon. Aluminum Heat Insulator for Holley Square Flange and Edelbrock Carburetors: Hardin Marine Square Bore To Spread Bore Carburetor Adapter. Edelbrock 2732 - Edelbrock Carburetor Adapters. That means it will mount either a spread bore or square bore carb. 1—Special Brass Adapter; 5/16" * 1—Special Brass Adapter Fitting; 3/8" * DESCRIPTION: The Edelbrock Square-bore Carb to Spread-bore Manifold Adapters are designed to allow installation of the Edelbrock Performer Series carburetor on vehicles with the OEM (original equipment) spread-bore intake manifold This product carries the full manufacturer's warranty. Holley 0-80555C Carb 4175 4-Barrel 650CFM Spread Bore Choke Vacuum Sec Chromate. Adapts square-bore carbs to spread-bore carb pad on Edelbrock intakes (except 350-2101 & 350-3701) $6.79. The 2696 is intended for Quadrajet and Thermo-Quad intakes, but since it has 4-holes, some people use it as an aluminum 4-hole spacer. Bolt Hole Pattern: Edelbrock square-bore (Performer or Thunder Series (5-5/32 x 5-5/8 in) carburetor to a stock Q-Jet or Thermo-Quad intake manifold (4-1/4 inch by 5-5/8 inch ) with a spread-bore flange Gasket(s) Included: Yes Look at the pic below. Thick, Each. The spread bore has smaller primary throttle plates as compared to its larger secondary throttle plates. These aluminum carburetor adapters allow an inexpensive method to mount a performance style square bore carburetor to an original equipment spread bore style intake manifold. Adapters allow a carb with one flange style to bolt to an intake with a different style flange. freq may vary. It's looking like it wont work. Bingo.. the performer manifold (not the RPM) is designed for both square bore and spread bore carbs. Well I just read that this adapter plate works on all all manifolds except two models and one happens to be the one i have Im going to call Edelbrock tomarrow and ask them what i should use. $34.95 Carburetor Gasket Kit #12370 Fits 2300, 4150, 4160, 4165, And Some 4500 Carbs FREE Shipping by Amazon. Aluminum carburetor adapter for the stock 4bbl 4350 Motorcraft to a Square Bore Intake. The carb is square bore and the intake is spreadbore. The shim will reduce the chances of a vacuum leak around the secondaries. Carburetor Adapter; The Edelbrock Square-Bore to Spread-Bore Adapter number 2732 adapts square-bore carbs to spread-bore carb pad on Edelbrock intakes. The Edelbrock Four-Hole Square-Bore to Spread-Bore Carburetor Adapter allows proper installation of carburetor to manifold. EDL-2732. Most Edelbrocks Spread bore intakes use #2732 ( 0.093 thick adapter plate ). Thumbs up on the Felpro gaskets. Square-Bore to Spread Bore Intake Adapter Plate. Part Number: EDL-2696 I have an Elderbrock 2101 Performer manifold on a 350. Estimated Ship Date: 3/4/2022. 10-26-2015, 12:40 PM. AFB`s are square bore. Assume a 750 CFM carb. 5.0 out of 5 stars. You can use a square bore carb on an after market spread bore manifold with a shim adapter plate. Carburetor Adapter, Open Center, Spread Bore Carburetor, Square Bore Manifold, 0.750 in. Get it as soon as Mon, Sep 27. C $15.09. An adapter will be required. Spread bore = the secondaries are much larger compaired to the primaries. UPDATED INFO: you have the wrong spacer - you have a spread bore manifold - ** Take a look at Edelbrock 2732 Adapter Plate for mounting Edelbrock square bore carb to a Edelbrock spread bore intake manifold - needed to close up gap difference between square & spread bore - then you should be able to use the Trans-Dapt square bore 1" swirl spacer that will improve bottom end performance. My manifold is an O.E.M high rise open or square bore. This gains measureable power in the upper RPM ranges at a cost of losing a little at lower RPM. Vehicle Specific Fits 27 models. It seals up the spread bore part of the manifold. Edelbrock Spread-Bore Adaptor plate for Edelbrock manifolds without regular mounting flange In stock SKU 2731 BENEFITS OF BUYING DIRECT FROM EDELBROCK Fast Shipping Tech Support Easy Returns High-quality Details The Edelbrock Square-Bore Adapter Plate #2731 adapts spread-bore carbs to Edelbrock manifolds without regular mounting flange. I know they make an adapter for this but how well do these work? Notice the wider opened carb side is the side that mates to q jets. 99. Many aftermarket intake manifolds have a dual pattern flange. Optimized to deliver superior performance when matched with Edelbrock's square bore carburetors. Edelbrock Carburetor Adapters. ooooo. Specs Required Items Related Items Performer Carburetor #1406 600 CFM With Electric Choke, Satin Finish (Non-EGR) $395.95 Universal Single-Feed Fuel Filter Kit #8135 Fits 5/16in Or 3/8in Lines $52.95 Reply HELP for help or STOP to It's looking like it wont work. Why? Mr. Gasket (and others) make an adapter plate which allows the installation of a Q-jet (or spread bore) onto a manifold that only has a bolt pattern for a Holley, or, you can turn the adapter plate over and install a square bore Holley onto a manifold that has a Q-jet bolt pattern. 22 product ratings. Brand New. Many aftermarket intake manifolds have a dual pattern flange. Brand New. $32.99 (Each) In Stock available for immediate delivery. Did some reading here on the forum- vacuum leak. Look in Holley, trans-dapt, etc.. they all have them. Oct 19, 2006. spead bores are suppose to have a better part throttle feel/economy due to the smaller throttle plates. Hoping someone can explain why my Edelbrock. The Edelbrock Square-bore Heat Insulator Gasket #9266 is designed to prevent percolation on Edelbrock Performer Series Carburetors exposed to extreme under hood temperatures. If it IS the RPM, you will need an adapter plate. Asked by: Dolo This will Mount a 4-bbl Rochester Quadrajet to Square-Bore, Single-Plane Manifold. 49-54 Chevy Cars. I'm wanting to put a q jet on a square bore flanged Edelbrock intake. Square Bore To Spread Bore Carburetor Adapter. I had issues with air filter height.there is usually enough meat in the adapter to mill about 3 to 4 mm off. Edelbrock 2696 Four-Hole Square-Bore to Spread-Bore Carburetor Adapter, Multi, One Size. spread bore vacuum leak. The Edelbrock Square-bore Carb to Spread-bore Manifold Adapter #2696 is designed to allow installation of the Edelbrock Performer Series carburetor on vehicles with the OEM (original equipment) spread-bore intake manifold (typically GM vehicles that were originally equipped with the Rochester Quadra jet carburetor). 1 Reviews. Hey guys, what do you think works better: an Edelbrock Performer or Performer RPM spread-bore intake manifold with a spread-bore carb like a Thermoquad, or an Edelbrock Air Gap square-bore manifold with a Quadrajet or the equivalent carb? Yes, you will need an adapter plate. Don't fool yourself into thinking that an aluminum adapter will make it work, it won't.")- spread-bore-manifold-square-bore-carb - spread-bore-square-bore-adaptor (advised to 1) never go spreadbore carb to squarebore intake, but B) advised to always buy a spreadbore intake, claimed . spread-bore manifold or vice versa should NOT be used. Description. Aluminum Edelbrock 1932 Four-Hole Square-Bore to Spread-Bore Carburetor Adapter $20.99 $26.24 previous price $26.24 20% off 20% off previous price $26.24 20% off Re: square bore to spread bore adapter really need 09-26-06 12:40 PM - Post# 1008737 In response to IH8RICE "if the intake had 2 bolt patterns it could use a square bore or spreadbore carb?" Not really. JEGS. 4.8 out of 5 stars 86. Msg & data rates may apply. Thick, Each Part Number: EDL-2696 ( 108 ) So I installed the e street EFI on a dual plane GM performance intake manifold (12496820) that has bolt holes for both spread and square bore carbs. 4.6 out of 5 stars. 95. Edelbrock 2696 Four-Hole Square-Bore to Spread-Bore Carburetor Adapter, Multi, One Size 383 $31 99 FREE Shipping by Amazon Temporarily out of stock. That manifold only directly fits the 4G/4GC carb, it will need an adapter plate for anything else. Add To Cart. Edelbrock 2697 - Edelbrock Carburetor Adapters Carburetor Adapter, 4-Hole, Square Bore Carb To Spread Bore Manifold, .850 in. $32. Thick, Each. EDELBROCK 2732 SQUARE-SPREAD (Q-JET) EDELBROCK 2696 Since either of the 2731 and 2732 adapters are only 0.1" thick, it won't add any significant amount of height if you are worried about hood clearance. Square bore = both the primary, and the secondary throttle bores are the same size. The eddy LD340 takes a square bore carb in which the primary and secondary throttle plates are the same size. Use For Square-Bore Single-Plane Intakes. My intake is an older spread bore Performer. Edelbrock 644113 EFI Adapter Fitting -6 An Male To 5/16" Sae Quick DiSConnect Female SCrew Type Blk Anodized Finish. +C $32.55 shipping estimate. the steel plate a spread bore gasket and . The holley is a square bore so you can use it, there are many other choices of carbs as well most being square bore. Intended for use only with Edelbrock manifolds. 12 product ratings. Use a square-bore carburetor on a square-bore intake manifold. Compare. Spread bore carb on a square bore intake - need help on this one please!! $36.95. C $25.79. it will make very little difference depending on what manifold you decide to replace it with.. there is a steel plate that i like to install so you end up with the carb.. a square bore gasket. Specs This can be used to swap your stock 4350 onto a new intake, or swap a new aftermarket 4bbl carb to your stock 4bbl intake. Are you sure you need one? It's a 0.850" thick adaptor. Spread bore carb on a square bore intake - need help on this one please!! I am getting ready to install a new Edelbrock Performer 750 CFM (electric choke) carburetor on my 1985 K30 Dually with a 454. It is designed to replace the original equipment unit. ( 32 ) Part Number: EDL-2732. Look at the pic below. There is a real thin steel adapter for some square bores to some manifolds to cover any vacuum leaks. This will also work to adapt a Holley Sniper EFI to the stock 4bbl AMC intakes! You don't want to use a square bore carb on a 4-hole spread bore manifold because the center will occlude the primary bores. Carburetor Adapter; The Edelbrock Square-bore Carb to Spread-bore Manifold Adapter number 2696 is designed to allow installation of the Edelbrock Performer Series carburetor on vehicles with the OEM (original equipment) spread-bore intake manifold (typically GM vehicles that were originally equipped with the Rochester Quadra jet carburetor). Pick the one that matches you carb. - Carburetor Adapter 4bbl Square Plate to Quadrajet Spread Bore Edelbrock 3/4". It's made so the carburetors linkage will not bind on the intake manifold. Adapters to allow use of a square-bore carb on an O.E. Carburetor Adapter 4bbl Square Plate to Quadrajet Spread Bore Edelbrock 3/4". 12-11-2015, 03:21 PM. 1932 Carburetor adapter kit adapts square flange carburetors to Quadra-jet 4-barrel intake manifolds and is 3/4 in thick with an open center, square bore to spread bore. Does anybody know, will a square bore Elderbrock 1406 carb fit, or does it require an adapter? Do the math. Square-Bore to Spread-Bore Adapter Plate (.100" thick, for Edelbrock manifolds only) Mounts square-bore carbs to spread-bore carb pad on Edelbrock intakes. Edelbrock 2696 - Edelbrock Carburetor Adapters Carburetor Adapter, 4-Hole, Square Bore Carburetor, Spread Bore Manifold, .850 in. .850 Save $15 Off $299, $25 Off $499, $50 Off $799, $100 Off $1,599 Orders - Promo Code: BUYNOW exclusions apply It is designed to replace the original equipment unit. If your manifold does not have the right bolt pattern, Carburetor Adapters are available. The Edelbrock Four-Hole Square-Bore to Spread-Bore Carburetor Adapter allows proper installation of carburetor to manifold. If the manifold you have is the performer, the performer vortec, or the performer air-gap and not RPM, then you won't need any adapter plate. Thickness 86 $31 75 Thick, Each. How critical is the use of Edelbrock's 4 hole square to spread bore adapter. Usually older designs. Like post above..just get a spread bore intake If u need to go to square bore carb later use adapter (I do) yes the adapter can act like a spacer increasing rpm range. C $872.94. u can put a divider in the adaprter , this will lower range. Since I am using the stock cast iron intake manifold, with a spread-bore bolt pattern for a Q-jet, I am using a spread bore-to-square bore adapter plate, in order to install the Edelbrock Performer carburetor, which has a square-bore bolt pattern. 4.7 out of 5 stars 381. Edelbrock 2732 - Edelbrock Carburetor Adapters. Notice the wider opened carb side is the side that mates to q jets. +C $19.65 shipping. or Best Offer. ( 32 ) Estimated Ship Date: 3/4/2022 (if ordered today) Estimated Ship Date: 3/4/2022 (if ordered today) Add To Cart. Square-Bore to Spread-Bore Adapter Plate (.100" thick). Hardware and Gaskets are Included. I am using an open style adapter that was present when I removed an old Carter AFB. . Hmmm so i went to my local parts store and bought a square bore to spread bore Performer Series carburetor adapter plate for Edelbrock manifolds. Carburetor Sealing Plate, Open Center, Square Bore Carburetor, Spread Bore Manifold, .063 in. The Edelbrock Square-bore Carb to Spread-bore Manifold Adapter #2696 is designed to allow installation of the Edelbrock Performer Series carburetor on vehicles with the OEM (original equipment) spread-bore intake manifold (typically GM vehicles that were originally equipped with the Rochester Quadra jet carburetor). I know that there are several adapters out there that will make this work, but I also see a big difference in the design and price of them. spread bore vacuum leak. Carburetor Sealing Plate, Open Center, Square Bore Carburetor, Spread Bore Manifold, .063 in. Any help would be appreciated. Detailed Description. 389. I know they make an adapter for this but how well do these work? . Part# CH24012 . 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Material Steel adapter style Open Center, square bore Carburetor, spread bore i would if... Motorcraft to a factory stock Quadrajet and Thermo-Quad manifolds will reduce the chances of a vacuum leak the... 1932 Four-Hole square-bore to Spread-Bore Carburetor adapter ; the Edelbrock Four-Hole square-bore to Spread-Bore adapter ). Put a divider in the least spreadbore or square bore flanged Edelbrock intake 0.093 thick adapter Plate measures &... Does it require an adapter for the stock 4bbl 4350 Motorcraft to a factory stock Quadrajet and thermo manifold... The upper RPM ranges at a cost of losing a little at lower RPM ended ( Tomorrow 9:00. Full manufacturer & # x27 ; s made so the carburetors linkage will not bind on the vacuum. And the literature is unclear full manufacturer & # x27 ; m wanting to put a divider in the to. X27 ; s warranty use of almost any intake, saving gaskets, plates adapters... Adapter that was present when i removed an old Carter AFB are suppose to have a better throttle. If it is the side that mates to q jets //classicbroncos.com/forums/threads/square-bore-vs-quadrajet-spread-bore.172774/ '' > Round bore and square on. Plate to Quadrajet spread bore Edelbrock 3/4 & quot ; thick ) etc.. they all have.. Power in the adapter to mill about 3 to 4 mm off adapter... No, it will need an adapter for this but how well do these work to! Manifolds have a better Part throttle feel/economy due to the smaller throttle plates the! Carb is square bore flanged Edelbrock intake and square bore carb and Thermo-Quad manifolds ; t that. Will reduce the chances of a vacuum leak around the secondaries bore only out... The shim will reduce the chances of a vacuum leak a Edelbrock square bore Carburetor a. Will a square bore carb by: Dolo this will also work adapt! Center, square bore flanged Edelbrock intake Carburetor adapter ; the Edelbrock square-bore carburetors to Quadrajet... Edelbrock Performer RPM is the side that mates to q jets for about 2 months then started surging!