3006 posts · Joined 2014. #15 · Jun 28, 2020. It is best to use a metal line for all but the connections at the modulator valve and if necessary at the intake manifold. If you try to run a rubber hose the full length the hose will eventually get soft and suck together which will not allow vacuum to get to the transmission.pcv valve routing. cobalt327 said: HERE is a link to a diagram of a basic PCV system. Generally speaking, the PCV valve goes in one valve cover and is routed to the base of the carb where there is usually a port for this purpose. The other valve cover has a fresh air intake that draws filtered air from the air filter housing or a separate filter.Answered in 1 hour by: Chevy Mechanic: Danny. Danny. Category: Chevy. Satisfied Customers: 3. Experience: ASE Certified Master Tech. Verified. The 4L60E is an electronic shift trans and doesnt have a vacuum modulator so the vacuum hose must go to something else.Th350 Trans. Stock Exhaust Manifolds/AIR System/Dual Exhaust. Like. Sort by Oldest first. 65 Skylark. 877 posts · Joined 2011. #2 · Feb 27, 2012. Are these readings with the vacuum advance hooked back up? 15-17 seems a bit low but nothing to worry about. With a stock cam I'd expect 18-21. Bill. _____________________________________________Edelbrock 1406 Vacuum connections. I've checked most of the archives and now I'm more confused than I was. I have a 92 350 truck engine that I put an performer intake and 1406 carb with a HEI distributor. I'm now to the point of putting the engine in and wanting to know which vacuum source/ports to use. I have a turbo 350 trans that needs …Vacuum diagram for 78 chevy c10 pu 250 inline 6. 1978 Chevrolet Truck C10 1/2 ton P/U 2WD 4.1L 1BL 6cyl. Fig. 14: Vacuum hose schematic - 1978 250 engine, light duty emissions (except California) Fig. 15: Vacuum hose schematic - 1978 250 engine, light duty emissions (California) Hope helps (remember to rate this answer). 2 answers.Vacuum lines and emissions stuff. 1978 Caballero, 350 V8 w/quadrajet, stock engine/tranny, planning to convert exhaust to true duals with glasspacks (stock manifolds). Getting carb rebuilt, so would be a good time to address this.Posted on Apr 09, 2009. Anonymous. 1776 Answers. SOURCE: need a vacuum hose schematic diagram for a 1985. I suggest visiting autozone.com and register the truck there. It's free and will give you access to an online repair manual. The vacuum diagrams should be available there. Hope this helped and best wishes. Posted on Sep 01, 2009.Access our free Vacuum Diagrams Repair Guide for GM Full-Size Trucks 1988-1998 through AutoZone Rewards. These diagrams include: Fig. 1: 1988-89 (VIN Z) C/K series with 4.3L350. I recently received a 1978 K10 4X4 on trade for an old 4-wheeler. The frame, suspension, and drivetrain has little-to-no rust, however, the body is pretty shot (floors practically gone, rust in the fender wells, etc.). ... Stock vacuum line configuration on carburetor should be: - Threaded fitting on the back of Quadrajet, with a hard ...May 25, 2018 ... Part 2: how to trace out your vacuum lines ... EMISSIONS , VACUM AND CANISTER DELETE 1985 C10 305/350 ... Chevy/GMC TBI flooding smoking running ... ICT Billet Fuel Vapor Purge Solenoid Plugs 551359. Plug Fittings, Fuel Vapor Purge Solenoid Plugs, Flanged Hex Head, Bolt-on, Billet Aluminum, Natural, Chevy, 5.7L LT5, Each. Part Number: ICB-551359. Not Yet Reviewed. I need a vacuum line diagram for a '78 chevy truck w/ high output 305. The origonal engine was a 350, I used the 350 distributer on the 305 and the vacuum advance does not seem to be working. Any help on the vaccum advance would be appreciated also. Answered in 2 hours by:Find steel and stainless steel automatic transmission vacuum lines for Powerglide, TH350, TH400, C-4, C-6, Torqueflite & more. Shop Summit Racing now!The vacuum modulator needs to be hooked up to full manifold vacuum. You can run the transmission without a kick down cable but you have to downshift manually. There are many universal cable setups or you can opt for a factory replacement and stock brackets. Just a note, you need the other 3/4's of your cam. You're just jealous because you can't ...Vacuum lines on 1997. Thread starter newbie78; Start date Mar 3, 2014; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission. Mar 3, 2014 #1 N. newbie78 Full Access Member. JoinedSOURCE: vaccum hose diagram for 88 chevy truck. it may not be a vacumn leak from a line,check the throttle shaft for movement,for example,i had a 89 1 ton 350 and my throttle shaft was moving around a lot and in order to keep it from idling high,i had to kick the throttle pedal.But also check the idle air control valve,which is the round …Quadrajet to Edelbrock carb swap03: The vacuum advance solenoid should now be installed. If you do not have one, contact Zip. They should be able to help you. Step 4. 04: Pre-lube all of the air injector mount holes in the exhaust manifold with anti-seize compound and install the right and left injector tubes. Step 5. 05: Install the check valves to the air injector tubes.764 posts · Joined 2007. #5 · Apr 2, 2009. there are two large vacuum ports on your carb. One in front and one in back, the one in front is for PCV and the one in back is for your power brake booster. The tranny vacuum line typically connects to a port on the manifold, not the carb. (there should be some type of tapped hole that leads into ...the carb line goes to a nipple that is between the throttle plates and the choke plate (so it sees high vacuum for cold starts and closes the snout valve) these vac fittings are small, so even open, they do not change the way a car runs that much. Kevin. 69' SS-350 Convert, M20, 3.31 posi.#chevrolet #automotive #diyRe: VACUUM MODULATOR REPLACEMENT: « Reply #4 on: February 03, 2010, 09:50:00 PM ». They are simple to replace....just take the 7/16" bolt (or is it 3/8--been a while) loose, take the vacuum line off and pull it out. Reverse to install. Ensure you have the rubber o ring in place on the new one.Aug 1, 2009 · I put a 350/350 combo in my 56 chevy. I now need to hook up the line for the tranny vacuum modulator. So I thought I would run a hard line with two rubber lines on the end, the only problem is the nipple coming off the vacuum modulator looks like 3/8 and the line on the carb is much much smaller. 68-82 Black 350 Vacuum Line Dress Up ; Base Unit of Measure, KIT ; Net Weight, 0.9 ; Car Years 1, 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 ...I swapped a 4bbl onto the 350 in my 74 but I still have the original 2bbl intake/carb sitting in the garage. The vacuum hoses on it are hooked up as follows: One of the two small ports on the back of the carb has a short hose that goes to the choke pull-off on the carb. The other small port has a longer hose that goes up to the ThermAC air …The vacuum lines on a 1987 Chevy S10 Blazer are responsible for routing vacuum to various components such as the brake booster, EGR valve, and other systems. A vacuum line diagram for your specific make and model of Chevy S10 Blazer can be found in the vehicle's service manual or in some cases, it can be found under the hood on a decal or sticker.1985 Chevy C10 LWB with bone stock 305 1971 Oldsmobile Cutlass Supreme with Rocket 350. OldsFan. ... The original Quadrajet in my '75 GMC 350 had a second vacuum port for the evaporative canister, on the lower front of the carburetor next to the large port for the PCV valve hose. ... but I wasn't sure that I didn't just create a big vacuum leak ...In response to lstuart270. take losts of fics and notes and then remove all vacuum lines and fittings and go to a parts store and buy what you need. i have never seen a kit. 56 bel air ( (since 2002) 62 impala ss (since 1965) 65 el camino (since 1969) 66 nova (since 1987) 67 malibu convertible (since 1981)Access our free Vacuum Diagrams Repair Guide for GM Full-Size Trucks 1988-1998 through AutoZone Rewards. These diagrams include: Fig. 1: 1988-89 (VIN Z) C/K series with 4.3L1994 c3500 tbi vacuum lines identification350/5.7. Ignore this - you are TBI. I'll leave it up for reference. Vacuum hose routing - 1987-88 Federal (VIN K) 5.7L engines with automatic transmissions (G10, 20 and 30 models) You must be registered for see images attach. Note: Covers all K VIN's except not with heavy duty emissions - and not California.T-400 modulator line. Jump to Latest Follow. 13K views 8 replies 3 participants last post by Unstable Apr 12, 2010. U. Unstable Discussion starter. 931 posts · Joined 2003. #1 · Apr 11, 2010. In the process of running new cooler lines today, the steel vacuum line going to the modulator fell apart. It was in rough shape.pcv valve routing. cobalt327 said: HERE is a link to a diagram of a basic PCV system. Generally speaking, the PCV valve goes in one valve cover and is routed to the base of the carb where there is usually a port for this purpose. The other valve cover has a fresh air intake that draws filtered air from the air filter housing or a separate filter.The body of the Tahoe is gone now. I have all the plastic vacuum lines, but can't tell determine what they went to. All I really need is a clear photo of the diagram or a drawing of some kind. Or even better, a diagram from a manual. I hate to buy a Tahoe manual when I really don't have the entire vehicle. Dec 19, 2008.318. SF Bay Area, CA. Jun 3, 2018. #1. My Suburban ran GREAT since i bought it and replaced the fuel injector spider. But now when accelerating off idle it stumbles and seems to almost stall (though it never has). I think it's some sort of vacuum leak. I tried unplugging the MAF sensor one evening after work and drove home and it ran a lot ...Re: inline 250 Vacuum/Emissions System. « Reply #3 on: September 07, 2008, 04:06:01 PM ». I wouldn't start removing vacuum lines just because it will still run without them. Just check for leaks---idle your engine then take some WD40 and start spraying around all gaskets and vacuum lines.1876 posts · Joined 2004. #4 · Feb 6, 2009. Hi 7T4-SOA, I have several old manuals but the vacuum hose routing diagrams in them only date back to 75 or 76. I don't know if GM even published diagrams for the earlier years. I swapped a 4bbl onto the 350 in my 74 but I still have the original 2bbl intake/carb sitting in the garage.Vacuum Hose Tee Fittings, Plastic, Set of 65. Part Number: RNB-799-355. 4.5 out of 5 stars. Estimated Ship Date: Tomorrow...Loading Estimated Ship Date: Tomorrow. ICT Billet Vacuum Port Fittings 551387. ICT Billet Vacuum Port Fittings 551387 Vacuum Port Adapter, 1/8 in. NPT, Supercharger, Each. Part ...Cant figure wiring out. go to internet & type in the following; 1984 chevy 350 free wiring Diagram and then repeat for 1991 chevy c2500 free wiring diagram. these diagrams are free and used by all mechanics. Dec 11, 2008 • 1991 Chevrolet C2500.Vacuum port on the intake manifold will go to the power brake booster if you have power brakes.If not block it off.PCV will go to the fitting in the first picture with the blue cap on it and it will look as the above post. By 1966 a 283 should have a PCV valve and a breather, no more road draft tube after 1965.Vacuum lines on 1997. Thread starter newbie78; Start date Mar 3, 2014; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission. Mar 3, 2014 #1 N. newbie78 Full Access Member. JoinedNeed diagram showing vacuum lines on 1987-1991 Chevy 350 with throttle body. Posted by kylejefcoat on Aug 29, 2010. A vehicle that old will suffer from brittle and cracked vacuum lines. I would say there is a bad, or several bad lines leaking away vacuum from the intake manifold.I need to find a vacuum hose diagram for a 1984 chevy caprice classic. the vacuum hose should be linked from intake manifold to thebrake booster on brakes as well as to the side of the gearbox onthe vacuum canister. should any one leak there will be a misfire or no vavuum for brakes. Feb 22, 2009 • 1984 Chevrolet Chevy.AutoZoneGM Chevy Mid-Size Cars 1964-1988 Repair Guide ... Fig. Fig. 4: 1971 V8 enginevacuum hoses ... Fig. Fig. 12: 1976 350 V8 engine-4bbl with EFE and AIR injection systems .... Fig. Fig. 52: 1980 5.7L V8 engine-automatic transmission federal. images for 1988 Chevy V8 5.7L 350 4bbl vacuum ... Access our free Vacuum Diagrams Repair Guide for GM Full-Size Trucks 1988-1998 through AutoZone Rewards. These diagrams include: Fig. 1: 1988-89 (VIN Z) C/K series with 4.3L 10Ft Vacuum Tubing,High Performance Silicone Vacuum Tubing Hose Line,Car Accessories 1/4" Inner Diameter Hose,Vacuum Lines Automotive,Applies to Most Cars Trucks (Blue) 4.4 out of 5 stars. 11. 50+ bought in past month. $8.29 $ 8. 29. FREE delivery Mon, Apr 22 on $35 of items shipped by Amazon.Misfires and backfires. High pitch noise from the engine. The engine is very sensitive to calculating the air entering the engine, to calculate the right air-fuel mixture. Therefore, a vacuum leak causes a lot of different symptoms. Here is a more detailed list of the signs of a vacuum leak to look for: 1. Rough Idle.Feb 26, 2010 · (5) Hard line going to the brake booster (1) another image of the MAP connection to the rear of the throttle body base (6) Connection 6 is on the rear of the intake manifold. I think this is a vacuum line and I have it running up to a tee, connected to the vacuum cannister, cruise control (non-op right now) and the HVAC vacuum line. May 24, 2016 · 5444 posts · Joined 2008. #3 · May 24, 2016. I have a turbo 350 and I have my vacuum modulator hooked up to a t fitting with my brake booster and it runs fine there but I have had it hooked up in the past on the timed vacuum port which as soon as your open up the throttle it gets vacuum anyways and it worked just fine. 25 1984 Chevy 350 Vacuum Diagram - Wiring Database 2020 ... Vacuum chevy hvac 1979 k10 control 1987 lines ac diagram truck cruise square body gm setup stepside question 1973 tank1986 chevy truck vacuum diagram Vacuum 1983 engine hoses hook chevrolet chevy diagramCarburetor silverado g30 fuse motogurumag 1988 fixya connection.Chevy fuel vacuum diagram 350 1978 line lines silverado chev 2005 ton need ask question own. Chevrolet vacuum diagramVacuum chevy diagram c10 engine 1979 firing emissions order hose system inline 1978 repair schematic need znetrgs 4f autozone a3 Hose chevrolet diagrams routing vaccum25 1984 chevy 350 vacuum diagram.Edelbrock 1406 Vacuum connections. I've checked most of the archives and now I'm more confused than I was. I have a 92 350 truck engine that I put an performer intake and 1406 carb with a HEI distributor. I'm now to the point of putting the engine in and wanting to know which vacuum source/ports to use. I have a turbo 350 trans that needs to be ...Vacuum line diagram for chevy 350 engine with 4 bbl holley carb. where does the vacuum line from the transmission goes on thr carb on a chevy 350 Read full answer. Jan 09, 2012 • Cars & Trucks. 10 helpful. 1 answer. Vacuum diagram for 78 chevy c10 pu 250 inline 6.Stock vacuum line configuration on carburetor should be: - Threaded fitting on the back of Quadrajet, with a hard steel pipe attached to it. The pipe curves up around the throttle bracket and toward the brake booster, and then the rubber line to the booster is attached to it. - Large 3/8" fitting with a nipple on the front of the carburetor.(distributor vacuum line) Neva worked on a car with a 350 transmission Click to expand... transmission gets vacuum from the port on the back of the intake manifold.The small outlet is what supplies the rest of your vacuum system. The first componant is a filter, then a splitter, one hose to the vac tank, the other to the headlamp/wiper door tee, etc, etc, etc. At this point it would be best to get a good vacuum diagram for the car. Dr. Rebuild has the best one IMO.- Vacuum line from the barbed port on the rear side (two ports) of the EGR solenoid to the EGR valve ... Vehicle: 1995 Chevrolet K1500 stock 350 TBI; 153k miles. Symptoms: Stumble/hesitation/chuggi ng on application of very slight throttle. Crawling up inclines or slowly accelerating from green light or in parking lots, engine would stumble …Print. Share. Access our free Vacuum Diagrams Repair Guide for GM Full-Size Trucks 1970-1979 through AutoZone Rewards. These diagrams include: Fig. 1: Vacuum hose schematic – 1977 250 engine, light duty emissions. Fig. 2: Vacuum hose schematic – 1977 250 and 292 engines, heavy duty emissions (except California)First , find the problem area on the Vacuum diagram. Highlight the individual area. Trace the Vacuum till you can see where a problem may have taken place. Eliminate each portion of the diagram in sections until you find the leak in the Vacuum. This makes knowing where to check connections easy with an automotive Vacuum diagram.This is a stock 350 Chevy. Also is it possible for the master cylinder to leak fluid into the vacuum booster and then be sucked into the intake through the vacuum line? Thanks. Save Share. Like. Sort by Oldest first Oldest first Newest first Most reactions. E. eloc431962.68-82 Black 350 Vacuum Line Dress Up ; Base Unit of Measure, KIT ; Net Weight, 0.9 ; Car Years 1, 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 ...In many Chevy and GMC engines, the thermal ported vacuum switch is broken off at the thermostat housing, or because of the age of the switch it has stopped working altogether. ... 1985 or 1986 Chevy or GMC Truck running like new. Now you can replace that missing or defective thermal ported vacuum switch on your truck just in time for showcar ...Chevy Truck Parts 1947-2012 from USA1 Industries. We offer classic truck parts for Chevrolet, GMC, Silverado, Blazer, S10 Pickup & more on our online catalog. Home » Chassis Parts » 1973-1987 » Transmission Vacuum Lines. Printable version. Transmission Vacuum Lines There are no available products under this category. Chevy Truck Parts ...The vacuum line diagram for the turbo 350 transmission is pretty simple. There are only a few lines that you need to worry about. The first line goes from the vacuum port on the transmission to the vacuum modulator. This line is used to control the shift points of the transmission. The second line goes from the modulator to the vacuum canister.Step 5: Remove the brake booster vacuum hose. When removing the vacuum hose from the vacuum brake booster check valve, use a twist and pull method. The twist should break the seal and allow you to pull the hose off. Step 6: Remove the vacuum brake booster check valve. Removing the check valve can sometimes be as easy as using the twist and pull ...Fine Lines TTV7101SS- 71-72 Chevy C10/30, GMC C1500/3500, 2wd, 350CID, Turbo-Hydramatic 350; Transmission Vacuum Line; Stainless Sale price $28.53 Regular price $31.70 In stock350/5.7. The actuating line for the TH350 modulator can go either straight to the intake manifold (there's usualy a tap point right behind the carb mount) or to an up-ported tap on the q-jet. Vacuum advance line comes from the factory hooked up to a manifold port on the Q-jet but there are many different views on that.Location. Jackson, MS. There's also a hard vacuum line that connects to the PCV fitting at the driver intake, crosses over to the water valve solenoid located on the passenger firewall near the accumulator. From the solenoid, there's a rubber line that goes to the water valve located on the heater hoses.Hello all, I need some help on how to properly run the vacuum lines on my new motor. I recently got a 1987 Chevy 350, with a holley 600 carb put in my malibu. I have the vacuum advance, transmission vacuum line, brake booster, and pcv lines to put on. I dont know exactly how to route them...Th350 vacuum line. Jump to Latest Follow. 8K views 16 replies 6 participants last post by mr55/56 Jun 28, 2020. Alans57 Discussion starter. 208 posts · Joined 2019. #1 · Jun 28, 2020. Where do you all connect this on the engine? Directly to the manifold or carburetor?C3 Tech/Performance - 69 350 vacuum hose to carb and manifold - My 69 350 has had some changes to vacuum hoses routing before I got the car and I am trying to put it back to original. ... 1969, 350, 69, air, chevy, cleaner, corvette, diagrams, engine, fitting, hose, line, photos, routing, vacuum. Back to Subforum. C3 Tech/Performance. …This should be helpful to some, a cheap sure do it yourself trick for finding any vacuum leaks your car or truck may have. This can help out major because en...2001 hose chevrolet S10 blazer 8l routing Vacuum diagram 350 chevy engine line 1971 lines cutlass hose routing diagrams 1987 1970 repair truck oldsmobile vacum corvette 1973. Loose Vacuum Line Diagram: My Car Has a Loose Vacuum Line That. Vacuum lines diagrams!!! i got them all!!!!! Vacuum hose routing diagram: i need …jimmy. Engine Size. 5.7l. Looking at the carb on my 350 5.7l I have almost all the vacuum ports plugged off. The only ones connected are PCV valve to large port on front of carb. And turbo 400 to intake manifold. Hei distributor to small port on front carb. There is a vacuum actuator pot on the side of the carb that is capped off that seems ...Chevrolet is an American icon, known for the Camaro, Corvette, Malibu, Impala and more. Take this quiz to see if you can recognize the most memorable '70s Chevys! Advertisement Adv...The vacuum connection is usually from the back of the vacuum modulator to a port on the back of the intake manifold. The vacuum modulator needs engine manifold vacuum to perform correctly. Ask Your Own Chevy Question. GM Tech (Cam) 32,822 Satisfied Customers. GM Grand Master Technician 2007. 14 years experience.1994 c3500 tbi vacuum lines identification Access our free Vacuum Diagrams Repair Guide for GM Full-Size Trucks 1988-1998 through AutoZone Rewards. These diagrams include: Fig. 1: 1988-89 (VIN Z) C/K series with 4.3L Become a Distributor. Click on image to zoom. 1988-90 Chevrolet/GMC Pickup Transmission Modulator Line. Automatic Transmission Vacuum Modulator Pipe. (0) Reviews: Write firstreview. New. SKU: CTM1006-OE. USD35.99. Pricing: $35.99.I need to find a vacuum hose diagram for a 1984 chevy caprice classic. the vacuum hose should be linked from intake manifold to thebrake booster on brakes as well as to the side of the gearbox onthe vacuum canister. should any one leak there will be a misfire or no vavuum for brakes. Feb 22, 2009 • 1984 Chevrolet Chevy.SOURCE: i need a 1987 chevy S10 vacuum hose routing diagram. Go to Autozone.com, become member, will give you repair manual,location of parts,diagrams. ... 1990 chevy 350 distributor wiring diagram and firing order. 1990 Chevrolet C1500. Torque Spec for '99 Chevy C1500 5.7L engine lower intake manifold.Chevy diagram wiring tbi vacuum line database1981 chevy truck fuse box diagram Vacuum diagram chevy line routing firebird pontiac hose 1974 1971 transmission 1975 schematic am lines engine diagrams carburetor repair truckDiagram vacuum chevy 1984 350 routing van emissions c30 ton gmc emission control 350ci gm smog duty 4bbl g30 2008.