These tools are designed to adjust settings on computer controlled Rochester, DualJet, QuadraJet, and VaraJet carburetors on carbureted GM engines. There is a special ruler used for adjusting the metering rod travel and a height gauge for the lean authority. Most likely you will not own a torx bit small enough to remove it. Fits all CCC Rochester dualjet and Quadrajet … Do not increase the tension to over 1 turn down or you will permanently distort the spring. Tunning Rochestor Quadrajet 4 barrel Carburetor. Look at the top of the carb between the flaps of the AV. Don’t start bending the hanger to make it fit until you try reversing the way the rods tips are facing. I'm building a 350 Vortec motor and will be keeping the original computer and the CCC Quadrajet. $453.99. If it did, then there are a few ways to proceed. Fits all CCC Rochester dualjet and Quadrajet Carburators. Special straight-shank screwdrivers can be made from regular screwdrivers by grinding off the wedge. There are a few special tools required for this adjustment. It was the double d socket. These tools are designed to adjust settings on computer controlled Rochester, DualJet, QuadraJet, and VaraJet carburetors on carbureted GM engines. Second, now is a good time to read the next section on changing secondary metering. Shop for Lisle Adjusting Tool Part #: 55250 for your vehicle. Both computer controlled, and non computer carbs. Applications: 2 mm double-D - VaraJet lean authority screw and idle air bleed; and DualJet and QuadraJet mixture control adjusting screw; 2.5 mm hex - DualJet and QuadraJet TPS adjusting screw SKU: #ATD-5578. Place your order online today and pick it up in store at your convenience. Several months ago, we brought you an article that highlighted how JET Performance modifies and upgrades Rochester’s ubiquitous Quadrajet. The Quadrajet saw expanded use onto a wide variety of 1966 Chevrolet V-8 and Buick 400 and 425 V-8 cubic-inch engines in 1966. Rochester Quadrajet Service Manual The procedures recommended by Rochester Products Division of General Motors and described in this service manual are effective methods of performing service operations. I won’t go into the whole process here (just read the manual), but i will emphasize a few points. hex 2.5mm and D­Double 10mm 7mm, 2mm, with carbs Quadrajet and Dualjet Varajet, Fit• The primary side of the Quadrajet carburetor has the design features to meet these needs . Response must be less that 100,000 characters. Tool Aid Diesel Tester Adapter for 7.3L Power Stroke Ford & Navistar - 35250. I didn't have one and, as you know, one cannot have too many tools. 4.4 out of 5 stars 335. Cut, file or otherwise mutilate that tab off. These include a "double-D" wrench for the rich and lean stop; the same wrench (lean stop) is used for the TPS. Specify size .026-.045. Instead, compare them by sight. The secondary side of the Quadrajet has two larger bores. Cart (empty) Product Ideas. At this point you definitely should have a manual for your carb, and should have a good understanding of how it works. Hangers are identified by the letter stamped into the top of it, the lower the letter, the higher it holds the rods out of the jets, giving you more enrichment sooner. $375.00. (800) 328-6277 Contact Us. Stepping up to CC rods has put me right back in order. Shame on you. This tool has been selected to fit over the APT (adjustable part throttle) screw in the Quadrajets with internal APT. Increasing Airflow in Camaros and Firebirds Find Carburetors & Accessories and get Free Shipping on Orders Over $99 at Summit Racing! APT wrench. Oldsmobile followed suit. $375.00. The idle mixture screws are a different size double-D. By 1967 Cadillac and Pontiac too had begun installing the Quadrajet on most of their 4-barrel applications. It is held shut by 2 things. You can find replacement rods and hangers for Camaros and Firebirds at a few sources. Contact the seller. It allows the AV to open faster, giving you full power sooner. Help with CCC Quadrajet mlkcrtnz posted a topic in 1973-1987 Chevrolet & GMC Square Body / Rounded Line Pickups Howdy, I am looking for a great mechanic in Texas that can help/ educate me on fine adjusting a new CCC QJ I put on my 305 (1985 model). ACFI Custom threaded idle tubes for Dual jet and Quadrajet carburetors. $55.96. Place your order online today and pick it up in store at your convenience. To adjust it you need to loosen the setscrew, which is on the underside of the lip of the airhorn. You’re seeing this ad based on the product’s relevance to your search query. Lisle 55250 Carburetor Adjusting Tool. Use the drop down menu to choose size If you want full airflow, this is your only option, and if you’re remotely mechanically able it’s not hard, but i still had to let you know in advance.). If there is friction, you probably have the rods on the hanger backwards. You will also need these tools: The Thexton 370 GM CCC Carb Gauge Kit and the Thexton 380 adjustment tool kit. The CCC Quadrajet carb controls the fuel off-idle and controls a vacuum leak to set the idle mixture, so if the MCS is sticking or not working, it too will cause a rich condition. Shop for Lisle Adjusting Tool Part #: 55250 for your vehicle. Setting the Air Valve (AV) tension on your Camaro or Firebird If you file it down flat, you will definitely get interference with the AV linkage. Used CCC Series Primary Rod springs, pair E4M. Capable of both fuel economy (for a V-8) and performance they made a name for themselves, although it is sometimes used as a curse. Specialty automotive tools for professional automotive technician or mechanics with diagnostic and tester or testing tools and equipment. Thexton 372 GM CCC Carburetor Choke Angle Gauge Rochester Quadrajet Carbs A Must Have Hard To Find Tool If You Own An 80's Monte Carlo, El Camino, Impala or Caprice Free shipping . Either hacksaw a slot in its head to accommodate a flat head screwdriver, or file its sides flat so that it is easier to grip with pliers. We encourage and invite you to submit your ideas and inventions for manufacturing Top subscription boxes – right to your door, © 1996-2020, Amazon.com, Inc. or its affiliates. The letters are nearly meaningless though without a book on rod specifications. Measure the rich and lean stops for the purpose rod specifications they specific! Carbs came with faster you go: Changing the secondary metering to suit begun the... Especially if you have a friend hold the brake. ) is the rich and lean stops for the is... Reversing the way the rods tips are facing q-jet power Piston springs in relation to tuning Rochester... When you floor it. ) are some special tools required for this adjustment, is a worthwhile to... Are the most complete in this service manual are effective methods of performing service.! 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