{"title":"Tubes, Vents and restrictions","description":"","products":[{"product_id":"air-horn-vent-angle-cut","title":"Air horn vent, angle cut.","description":"\u003cp\u003eThis slanted vent tube is located in air horn toward the front of the quadrajet.\u003c\/p\u003e","brand":"Quadrajet Power","offers":[{"title":"Default Title","offer_id":52840446886199,"sku":"188","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/4636\/4215\/files\/451695641__11193.png?v=1786706718"},{"product_id":"bleed-restrictions-pair-new","title":"Bleed Restrictions, pair.  New","description":"\u003cp\u003eBrass bleed restrictions to press in main body or air horn for main air bleed adjustments. OD is .120\" to fit the casting.\u003c\/p\u003e","brand":"Quadrajet Power","offers":[{"title":"Default Title","offer_id":52840446918967,"sku":"BR146","price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/4636\/4215\/files\/449725598__15590.png?v=1786706720"},{"product_id":"down-channel-restrictions-pair-new","title":"Down Channel Restrictions, pair, New","description":"\u003cp\u003eDown Channel Restrictions are part of the idle circuit in the main body. The size of this orifice will restrict fuel flow during idle. When increasing compression and cam on an engine, these should be enlarged to allow more fuel to flow with less vacuum. We can size these for you Upon request, just put size needed in notes at checkout. .125\"OD The restriction is about .030\". It is small to allow you to size as required for your application. \u003c\/p\u003e","brand":"Quadrajet Power","offers":[{"title":"Default Title","offer_id":52840447574327,"sku":"DCR262","price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/4636\/4215\/files\/445664969__20958.png?v=1786706721"},{"product_id":"idle-pickup-tubes-new-pair","title":"Idle pickup tubes, New pair","description":"\u003cp\u003ePair of idle pickup tubes with collars. These would replace original tubes in Quadrajet main body in the idle circuit. Select the size of the orifice you would like, or we will send as produced, which is about .035\" Idle tube sizes are not one size fits all for the restriction. There are many different restriction sizes from factory production. If you are unsure, please message us with your carb number and engine details. We can suggest a size and size them for you. Larger orifice size produces richer idle mixture. Our precision drill bits are perfect for sizing the tubes and other orifices in the Quadrajet.    \u003c\/p\u003e","brand":"Quadrajet Power","offers":[{"title":".035","offer_id":52840447672631,"sku":"IPT-035","price":12.99,"currency_code":"USD","in_stock":true},{"title":".036","offer_id":52849858838839,"sku":"IPT-036","price":12.99,"currency_code":"USD","in_stock":true},{"title":".038","offer_id":52849858871607,"sku":"IPT-038","price":12.99,"currency_code":"USD","in_stock":true},{"title":".040","offer_id":52849858904375,"sku":"IPT-040","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/4636\/4215\/files\/430556616__38031.png?v=1786706722"},{"product_id":"secondary-brass-tubes-pair-new","title":"secondary brass tubes pair, New","description":"\u003cp\u003ePair (2) of Brass secondary tubes. On air horn OD .276\" x 1.000\" length  \u003c\/p\u003e","brand":"Quadrajet Power","offers":[{"title":"Default Title","offer_id":52840447902007,"sku":"ST149","price":7.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/4636\/4215\/files\/430556643__66135.png?v=1786706724"},{"product_id":"secondary-pick-up-tubes-pair-new","title":"Secondary pick up tubes, pair New","description":"\u003cp\u003ePair of new brass secondary pickup tubes. These press in to bottom of air horn to pull fuel up through the secondary enrichment passages.\u003c\/p\u003e","brand":"Quadrajet Power","offers":[{"title":"Default Title","offer_id":52840480506167,"sku":"tubes","price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/4636\/4215\/files\/446464303__47373.png?v=1786707067"},{"product_id":"vacuum-tube-steel","title":"Vacuum tube, Steel","description":"\u003cp\u003eSteel vacuum tube. 1\" long .25\" OD\u003c\/p\u003e","brand":"Quadrajet Power","offers":[{"title":"Default Title","offer_id":52840502067511,"sku":"tube57","price":3.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/4636\/4215\/files\/UoGTYntJSjOHxuIkGhg77w__18455.jpg?v=1786707365"},{"product_id":"brass-tube-vent-tube-for-charcoal-canister-line","title":"Brass Tube, Vent tube for Charcoal canister line","description":"\u003cp\u003eBrass tube pushed in to main body on many Quadrajets from 1975 to 1985.\u003c\/p\u003e","brand":"Quadrajet Power","offers":[{"title":"Default Title","offer_id":52840505147703,"sku":"tube40","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/4636\/4215\/files\/dh9O_gcnSNy0wgf6Jztugw__13893.jpg?v=1786707424"},{"product_id":"steel-t-tube","title":"Steel \"T\" Tube","description":"\u003cp\u003eSteel \"T\" tube pushed in to main body on many early Quadrajets. This split the vacuum line going to the vacuum Brake\/pull off.\u003c\/p\u003e","brand":"Quadrajet Power","offers":[{"title":"Default Title","offer_id":52840505180471,"sku":"tube104","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/4636\/4215\/files\/XRbzczm8T723nc4elyh1WA__79892.jpg?v=1786707424"},{"product_id":"steel-vacuum-tube-step-down","title":"Steel vacuum Tube, step down","description":"\u003cp\u003eSteel vacuum tube pushed in to main body on many early Quadrajets. This tube is 1\/4\" on large size to press in to the larger vacuum ports of main body, and transitions to 5\/32\".\u003c\/p\u003e","brand":"Quadrajet Power","offers":[{"title":"Default Title","offer_id":52840505213239,"sku":"tube109","price":3.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/4636\/4215\/files\/6AcJIbPRh2BQHnBgoGT3A__33027.jpg?v=1786707425"},{"product_id":"vent-tubes-pair-air-horn-new","title":"Vent  tubes, pair. Air Horn New","description":"\u003cp\u003ePair of new brass vent tubes. These press in to bottom of air horn.\u003c\/p\u003e","brand":"Quadrajet Power","offers":[{"title":"Default Title","offer_id":52840565309751,"sku":"Tube74","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/4636\/4215\/files\/446464371__19836.png?v=1786708155"},{"product_id":"idle-circuit-recalibration-kit","title":"Idle circuit recalibration kit","description":"\u003cp\u003eRecalibrate your idle circuit for proper idle. Many commercial remanufactured carbs have been altered to make them idle rich.This kit can help you get your idle dialed in.  Pair of idle pickup tubes with collars. Pair of down channel restrictions Precision drill bit set    Idle tube and down channel restriction sizes are not one size fits all for the restriction. There are many different restriction sizes from factory production. If you are unsure what size you need, please message us with your carb number and engine details. We can suggest a size. Larger orifice size produces richer idle mixture. Instructions: idle tube replacement: CLICK HERE Down channel replacement: CLICK HERE  You will need to make sure your idle bypass air passages are not blocked in the main body.\u003c\/p\u003e","brand":"Quadrajet Power","offers":[{"title":"Default Title","offer_id":52840568750391,"sku":"ICR","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/4636\/4215\/files\/2024-06-08_19.25.09__84405.jpg?v=1786708213"},{"product_id":"screw-to-remove-idle-pickup-tubes","title":"Screw to remove Idle pickup tubes","description":"\u003cp\u003eThis is a fine thread drywall screw that we use to remove the idle pickup tubes from the main body.  \u003c\/p\u003e","brand":"Quadrajet Power","offers":[{"title":"Default Title","offer_id":52840569471287,"sku":"IPTscrew","price":0.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/4636\/4215\/files\/2024-12-23_16.11.04__43380.jpg?v=1786708246"},{"product_id":"brass-vacuum-port-tube-187-x-1","title":"Brass vacuum port tube .187 x 1\"","description":"\u003cp\u003eBrass tube, vacuum port tube. This fits the smaller holes in body or air horn OD .187\" x 1.000\" length  \u003c\/p\u003e","brand":"Quadrajet Power","offers":[{"title":"Default Title","offer_id":52840572191031,"sku":"bt50","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/4636\/4215\/files\/2025-05-19_14.28.09__58298.jpg?v=1786708289"},{"product_id":"vacuum-port-tube-250-x-1","title":"Vacuum port tube .250\" x 1\"","description":"\u003cp\u003etube, vacuum port tube. This fits the larger holes in body or rear of air horn OD .250\" x 1.000\" length  \u003c\/p\u003e","brand":"Quadrajet Power","offers":[{"title":"Default Title","offer_id":52840572289335,"sku":"bt78","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/4636\/4215\/files\/2025-05-19_14.28.51__97924.jpg?v=1786708291"}],"url":"https:\/\/quadrajetpower.com\/collections\/tubes-vents-and-restrictions.oembed","provider":"Quadrajet Power","version":"1.0","type":"link"}