Chevy 350 vacuum lines

VACUUM HOSES: DESCRIPTION: The vacuum system uses different sized black rubber hoses. Small hoses have an inside diameter of 5/32", medium 7/32" and large 9/32". The hoses should have colored stripes that correspond to colored paint dots on the vacuum system components. The colors used are red, yellow, green, white and blue. The red hoses are used to close the headlamp doors and the green ...

SOURCE: Need a copy of 1986. look under the hood on the fan shroud. SOURCE: need a vacuum hose routing diagram. go to a parts shop and ask for a chiltons or a haynes manual. it will be in there. if there is still a good sticker under the hood it will be on there. SOURCE: need a serpentine belt diagram for 1988 chevy G30.Same goes for emissions systems like the EVAP canister and others. Even your braking system can be affected by a vacuum leak, since most power brake boosters rely on engine vacuum for the assistance in braking effort. Symptoms like poor acceleration, rough idle, stalling, stumbling, misfires, poor fuel economy, and hard starting might be caused ...Port D - capped. Port E - connect to PCV valve. Port F - capped. Port G - connect to secondary vacuum break. This is the absolute minimum of vacuum lines needed to run. Any more are unnecessary, any less and it won't run right. Mine is an 85 model with the 4-speed automatic overdrive, heat only (no AC).1970 350 Vacuum Lines. Hi folks, new here, just bought a nice 1970 SS. Upon inspection of the engine bay, I removed the air cleaner and noticed that one of the vacuum lines coming off the bottom of the air cleaner is not plugged into anything. I look at a vacuum line diagram and it says that it should go to the intake manifold, but I don't know ...Dorman Products PCV Valve Cover 1996-2007 Chevy/GMC. $14.99 Estimated to ship direct from manufacturer on 05/07/24, pending manufacturer availability. Learn More. Lowest Price Guarantee. ... Vacuum Hose. Dorman Products Rubber Evac Hose 2001-04 Dodge Dakota & Durango. Dorman Products 46020 Part Number: 326-46020.

Nylon hose: Vacuum line diagram for chevy 350. Check Details. Line vacuum distributor where carb hose impala heater choke. I need a detailed vacuum diagram/emissions diagram for a 1986 3/42001 pontiac grand prix 3.8l fi ohv 6cyl 21 chevy 350 vacuum diagramChevy wiring gmc blazer 1982. Vacuum diagram 350 chevy lines 1984 sbc wiring schematic ...The vacuum diagram for a 1979 Chevy 350 engine shows the various components that rely on vacuum pressure in order to function properly. Understanding how vacuum is …03: 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.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 ...Ended up with some weird vacuum line that melted, swelled up and fell off causing some running issues1976 gmc 350 v8 vacuum diagram - Looking to redo all vacuum lines and need to know where everything runs ... Looking to redo all vacuum lines and need to know where everything runs. 1976 GMC C/K 1500 Series-Maintenance & Repair. ... Used Chevrolet C/K 10. 209 listings starting at $25,900. Used GMC Sierra. 7 listings Used …

Re: 79 c10 350 with edelbrock carb and intake. vacuum lines?????? It does run better now that the tranny line is hooked to manifold vacuum. Before that switch it was stumbling and shifting at a higher than ideal rpm. The only connected lines are the distributor, tranny, PVC to carb only, and brake booster.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 ...The vacuum increases as the throttle are opened. In a car with an automatic trans, the hose is connected to a full-time vacuum port. Full manifold vacuum is present at idle and decreases as the throttle is opened. The port is below the throttle blades. The reason for this is to increase low-speed torque with the increased spark advance.1972 C10 350 Quadrajet Engine Vacuum Lines The 1967 - 1972 Chevrolet & GMC Pickups Message Board Register or Log In To remove these ... '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA 03-12-2022, 11:40 PM #11: towbar. Registered User ...

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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. ... spank: open the valve so a little propane can come out, and hold it close to intake gaskets, vacuum lines and things. Carb cleaner with the straw on the tip works ...PAY IT FORWARD . . . Please help me keep all my resources FREE for everyone to learn from and use. DONATE any amount here https://www.paypal.com/donat...350/5.7. 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.The Chevy 350 TBI (Throttle Body Injection) vacuum diagram is a visual representation of the vacuum lines and system in the Chevy 350 engine with TBI. It shows the different vacuum lines and their connections, as well as the various components that rely on vacuum to function properly.

I have a record of a 97 vortec 5.7 with an average map of 35 kpa at a warm idle and 49 kpa at a warm cruise @ 60 mph. If you feel like doing the conversion. What does the vacuum do when you snap the throttle? Speaking of prius, I just replaced my 1st hybrid battery in a 2005 prius today.The most common of those, at least with the older GM cars, is the Turbo-Hydramatic (TH) 350, TH400, and 700R4. All three of these gearboxes have earned their stripes over the years, particularly the TH400 as the unit to rely on in a purpose-built drag car. ... The culprit is usually because the original vacuum line running from the intake ...Tbi Routing Vacum Vortec Diagrams Reassembling. And maximum lift with 1.5:1 rocker. Web 4 cylinders a 2.5l tbi (found in 47% of 1991 chevrolet s10 p/u 2wd) 4 cylinders e 2.5l tbi (found in 53% of 1991 chevrolet s10 p/u 2wd) 6 cylinders r 2.8l. Web when you get to the map port just move map to a different port on the throttle body.Luckily, Eckler's Classic Chevy and GMC Truck has this correct reproduction of the original intake fitting that will work with any intake with 1/2" NPT threads. Trust Ecklers Classic Chevy & GMC Truck for all your Truck, Blazer, Jimmy or suburban parts needs always at the best possible price. 1967-1969 Chevrolet truck 1967-1969 GMC TruckHello 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...By end of August and into September, the price of lumber could settle in a range between $350-$450 per thousand board feet, an analyst told Insider. Jump to Lumber futures are slid...Looking for a diagram of the vacuum lines from carburetor to what they attached to on the engine? Thursday, October 8th, 2009 AT 9:43 AM. 1 Reply. JDL MECHANIC; 16,098 POSTS; Check out the diagrams (Below). ... Engine Mechanical Problem 1986 Chevy Caprice 6 Cyl Two Wheel Drive Automatic Are All 4.3l Throttle Bodies In A 1986 Gm The Same?...Manifold Vacuum Fittings are available in a 90° or T-style fitting. The 90° fitting has a single 3/8" vacuum port and the T-style fitting has a 3/8" and 1/4" vacuum port. Both styles are available in zinc-plated steel or chrome-plated aluminum. For those simply needing to plug the vacuum port in the intake manifold, order part #30-1434.Jan 28, 2024 · I need a vacuum diagram for a 1978 350 chev 1 tonVacuum line diagrams Vacuum line diagrams: there is a vacuum hose coming from theVacuum hose diagram routing chevy vaccum chevrolet sponsored links 1999. Vacuum hose routing diagram chevyHoses emissions 1977 2001 hose chevroletVacuum line diagrams: hi, i need to replace all vacuum lines on my....

One outlet is for the power brake booster and the other is for the Vacuum Modulator on the transmission. Its entirely possible that your connection is supplying …

Vent any vacuum from the booster by applying the brakes several times. You will notice a change to a hard pedal when all vacuum has been vented. 2. Carefully disconnect hydraulic lines from the master cylinder. 3. Remove the nuts attaching the master cylinder to the power booster. 4.Connect the vacuum advance for the distributor directly to the intake manifold, either there is a plug you can use or there will be a fitting at the very back of the carb that is usually used for the power brake booster.1973-89 Pre-Bent Original Material Fuel Lines and Vacuum Advance Line. Fuel hoses are not included with fuel lines and must be purchased separately. Fuel hoses are two feet long and come with four clamps. They must be sized and cut to fit. Fuel Lines fit carbureted engines only.A guy can put a three connection vacuum canister in a 5 o 6 line truck and using a vacuum control unit have the identical function. Next port the short one in the middle is where the vapor line from the fuel tank(s) connect. And the last port in the picture it is plugged off that connects to the bowl vent in the carburetor.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 …1971 Chevy vacuum lines. 1edgyguy. 524 subscribers. Subscribed. 2K. 300K views 10 years ago. This shows you where the vacuum and fuel lines go from point A. to …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.

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C3 Tech/Performance - Need a picture of 1971 engine with proper vacuum routing - I'm having a hard time figuring out the standard 350 vacuum line routing for the vacuum tank, distributor, CEC solenoid, PCV, and automatic transmission modulator. Does anyone have a picture Alan71's engine? I have seen it a couple of...Find Vacuum Lines Power brake booster Vacuum Line Position and get Free Shipping on Orders Over $109 at Summit Racing! ... Vacuum Lines, Power Brake Booster Vacuum Hose, Rubber, Chevrolet, GMC, Each. Part Number: ADO-176-1641. Not Yet Reviewed. Estimated Ship Date: Jun 12, 2024 if ordered today. Special OrderFirst , 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.I just added a brake booster to my 55 it has a 350 motor, were do I put the vacuum line to. ... 1956, and 1957 Chevy owners and enthusiasts. Come join the discussion about restoration, engine swaps, reviews, performance, modifications, classifieds, troubleshooting, maintenance, and more! Open to all models including Belair, …350 tbi engine vacuum diagram Chevy 350 tbi vacuum line diagram 1987 chevy 350 engine diagram. What is the 98 k1500 350 ci vacuum line routing. Chevy 350 tbi engine diagram'87 350 w/tbi vacuum line questions Blazer oldsmobile 1989 …Put a vacuum gauge on the manifold fitting and read what you have. Should be at least 14-18 inches of vacuum. After that if that fixes the brake problem then find a vacuum source that is full vacuum at idle off the carb. Then install the trans line to it. The fitting on the manifold is 3/8", will try it.The vacuum diagram for a 1979 Chevy 350 engine shows the various components that rely on vacuum pressure in order to function properly. Understanding how vacuum is …By end of August and into September, the price of lumber could settle in a range between $350-$450 per thousand board feet, an analyst told Insider. Jump to Lumber futures are slid...Jan 27, 2006 · Specs- 350 engine, Edelbrock Performer EPS manifold, Holley 4160, TH350 trans (rebuilt w/shift kit), 3.73 posi. I stopped at the transmission place that rebuilt my transmission about a year ago. They looked at it and said the vacuum line should be connected to a vacuum port directly on the manifold, ie. the same one that the brake power booster ... One outlet is for the power brake booster and the other is for the Vacuum Modulator on the transmission. Its entirely possible that your connection is supplying …MANUAL. 151,000 MILES. My truck was purchased with the emission vacuum hoses disconnected and plugged. The diagram on the air cleaner is damaged. I shows HKS. The truck is a 1985 Chevy K20 with the HD LT9/350M motor. I want to hook up the hoses but need a good diagram. The Factory Service manual tells me to look at the sticker.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. ….

I have a 79 Chevy 350 engine that I need a vacuum diagram for, and yes I have been to several libraries in my area looking for a manual without finding it. Any help would be greatJun 23, 2005 · 35,251. Location. 818-953-9230. Website. www.marksoffroad.net. Jun 23, 2005. #4. Depending on what you need the vacuum source for, you might be able to T into the line for your brake booster as well. A carbureted man in a fuel injected world. my website: www.marksoffroad.net. Assuming you have a th350 trans, one goes from carb to vacuum module on trans, one goes from manifold vac to brake booster (assuming power brakes), one goes from carb to vac advance, and then you have PVC to base of carb. Not sure if there are any extras on 72 compared to 70-71 so you may have a few others I dont know about. Find CHEVROLET 5.7L/350 Vacuum Lines and get Free Shipping on Orders Over $109 at Summit Racing! ... Power Brake Booster Vacuum Hose, Rubber/Steel, Chevrolet, GMC, Each. - 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 …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. The Chevy 350 TBI (Throttle Body Injection) vacuum diagram is a visual representation of the vacuum lines and system in the Chevy 350 engine with TBI. It shows the different vacuum lines and their connections, as well as the various components that rely on vacuum to function properly. The vacuum diagram is an important tool for understanding ... These El Camino reproduction transmission vacuum lines have been manufactured to original factory specifications using today's modern manufacturing techniques. You will find the fit, finish and function will work superbly for your restoration. In addition, using reproduction transmission vacuum lines from the El Camino Store will add authenticity and value to your vehicle.Fine Lines TTV7101OM- 71-72 Chevy C10/30, GMC C1500/3500, 2wd, 350CID, Turbo-Hydramatic 350; Transmission Vacuum Line; Steel Sale price $28.92 Regular price $32.13 In stockMANUAL. 151,000 MILES. My truck was purchased with the emission vacuum hoses disconnected and plugged. The diagram on the air cleaner is damaged. I shows HKS. The truck is a 1985 Chevy K20 with the HD LT9/350M motor. I want to hook up the hoses but need a good diagram. The Factory Service manual tells me to look at the sticker. Chevy 350 vacuum lines, 1971 chevy 350 vacuum line diagram. 1971 chevy 350 vacuum line diagram. Answered in 4 minutes by: Classic Car Mechanic: JHoop. Hello , my name isXXXXX you for choosing justanswer.com. I uploaded the diagram in .pdf format here to justanswer., i need a vacuum hose diagram on an 1985 5.7 liter 350 v-8 engine because i cant figure out how to hook the vacuum lines back up to the carb. Answered in 7 hours by: Chevy Mechanic: Ted G. Ted G. Category: Chevy. Satisfied Customers: 11,072. Experience: 20 years auto repair experience, ASE Master Tech, Mechanical Failure consultant, Expert Witness., Re: Vacuum Lines on 305 Engine. « Reply #9 on: July 21, 2016, 09:23:58 AM ». The blue/black check valve is correctly connected to the TCC switch on the firewall (above). Cap the vacuum nipple that used to connect to the EFE (below). There shouldn't be a check valve in the tip-in switch vacuum line, so you are okay there., This vacuum hose kit is an 8-piece kit built for use with 1960-1987 C10 pickup trucks. Each vacuum hose connects to valves that control various air blend doors in the air conditioning system. This Old Air Products kit is ideal when searching for a solution for damaged vacuum lines. Every kit comes complete with eight total hoses, seven of which ..., This vacuum hose kit is an 8-piece kit built for use with 1960-1987 C10 pickup trucks. Each vacuum hose connects to valves that control various air blend doors in the air conditioning system. This Old Air Products kit is ideal when searching for a solution for damaged vacuum lines. Every kit comes complete with eight total hoses, seven of which ..., 1984 chevy 350 vacuum diagramVacuum diagram advance lines c4 engine corvette 1964 manifold diagrams stalling shifted soon park part Vacuum diagram chevy 350 line 1971 1977 1979 hose engine pontiac diagrams lines schematic fuel truck v8 emissions gmc corvette1984 chevy 350 vacuum diagram., Re: 1977 350V8 vacuum line diagram 01-14-05 10:44 AM - Post# 482596 In response to good.wrench Oh, gosh, everyone is looking for vacuum diagrams, including me! I just logged on after being away for months because I thought someone out there might have the vacuum diagrams for a 1977 Chevy Caprice Classic landau coupe, 4-barrel, 350V8, and I find ALL of you have been looking for diagrams as well., DRJEFFCOYLE. MEMBER. 1997 CHEVROLET TRUCK. The pcv hose on the driver side of the 5.7 liter engine connects from the valve cover to the intake manifold. There is another smaller vacuum line that comes from this connection at the intake manifold. Where does this vacuum line connect?, SBC 350 Vacuum Advance/ Idle issues. I'm seeming to have quite a bit of trouble adjusting my timing/ idle speed. I pull and plug the vac advance line, set the timing to 12 BTDC. Adjust the idle speed and Air/fuel slightly to were i'm idling around 850 in park/neutral and idling at 650 in gear. When i hook the vac advance back up, idle speed …, What causes a Camaro iroc-Z with a 5.7L 350 T. I have a 1988 Camaro iroc-Z with a 5.7L 350 TPI engine and I'm looking for a vacuum diagram. It overheats when it sits and idles, runs rough with a high idle. All gaskets are correct and the engine just got completely redone except boring out the pistons. The heads were magnafluxed, shaved, valve ..., 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., These may create a vacuum leak as well. Pinch the vacuum line leading to the device, and spray soapy water on it and hear for a change in idle speed. If you find a hose with a softened, hardened, or damaged spot, replace it. You can also spray water on a hose, ports and connectors to help you check for leaks., 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 …, Top 6 Reasons Why Your Chevy 350 TBI Bogs On Acceleration. #1. Leaking Vacuum Lines. A vacuum leak results in supplying the wrong air/fuel ratio into the engine, thus, resulting in bogging or rough and slow acceleration. Some other symptoms to look out for to ensure that the problem is indeed a vacuum leak are hissing sound from …, Turbo 350 Vacuum. I just got my TH350 rebuilt and it is not shifting into third unless I take my foot off the gas. as soon as I touch the gas again it goes into second. The transmission shop is saying that my engine probably doesn't have enough vacuum. It is a brand new crate engine cam specs are.435/.460 and 212/222 @.050., Quadrajet carburetors have several vacuum ports that play different roles in the overall functioning of the engine. Each vacuum port has its specific purpose and contributes to the performance and efficiency of the carburetor. 1. EGR (Exhaust Gas Recirculation) Port: This vacuum port is responsible for controlling the flow of exhaust gas back ..., Check this diagrams for 1985 Chevrolet Truck G30 1 ton Van 5.0L 4BL 8cyl (click over pic for zoom)... Fig. 123: 1985 5.0L and 5.7L engines-Federal with automatic transmission (G10, 20 and 30 models) Fig. 126: 1985 5.0L and 5.7L engines-California with automatic transmission (G10, 20 and 30 models) Hope this helps., 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. 0 helpful. 2 answers., 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), Ended up with some weird vacuum line that melted, swelled up and fell off causing some running issues, In this video I install the rochester 2 barrel carburetor on a chevy 350. I talk about the vacuum advance and how it needs ported vacuum, I talk about the ga..., 1. On the back of the carb is a large threaded fitting - a large diameter metal pipe connects to this fitting and with a large diameter rubber hose to the power brake booster. 2. On the back of the manifold (on the flat area behind the carb) you screw on another metal fitting. From this fitting you will have a medium diameter vacuum line, which ..., Jan 5, 2010 · 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. , 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..., Rebuilding vacuum lines & emissions controls in a 1979 K10 350/5.7. A previous owner intended to register this truck as off-road only or in a non-smog county in CA, and none of the emissions or exhaust were in place when I bought it. I was living in OR at the time so I wasn’t worried, but now that I’m back in CA I’ve been trying to ..., I just added a brake booster to my 55 it has a 350 motor, were do I put the vacuum line to. ... 1956, and 1957 Chevy owners and enthusiasts. Come join the discussion about restoration, engine swaps, reviews, performance, modifications, classifieds, troubleshooting, maintenance, and more! Open to all models including Belair, …, 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?, In some cases the vacuum advance, HVAC, TH350 modulator, and other items are connected into that tree on the back of the manifold instead of the carburetor. Vacuum items you may have. - Distributor vacuum advance - may be a ported (only open when off idle) or unported connection. Full/unported vacuum connections., JEGS 555-50080 TBI Air Flow Enhancer Features: Up to 10 HP increase by smoothing the transitional air flow between the stock air cleaner base and the throttle body injection unit. Fits 1985-1997 GM and Chevrolet Trucks with 305 and 350 throttle body injected engines. Grommets with straight and 90° x 1/2 in. fittings for easy connection to your ..., Here are the heating /ac vacuum diagrams for the `85-`94 Astro. '98 Mercedes E300 Turbo Diesel. '89 4Runner SAS'ed, 38.5SX's, Mercedes OM617 Turbo Diesel. '98 Suburban K2500, Cummins 24Valve, 5spd 4x4. '03 VW Jetta TDI., Can anyone recommend a PCV valve part number for a stock 350 Chevy that doesn't pull vacuum at idle. Two I tried pull so much vacuum at idle, the engine stalls when I put the trans in gear, like a big vacuum leak. I suspected one may be defective so I replaced it with a new one, but it's basically doing the same thing., Post: Vacuum diagram for 75 Chevy 350 4Bbl (Topic#12948) kksmith1 Member Posts: 2 Loc: Fresno, CA USA Reg: 12-03-02. User Info. Send Private Topic View Profile. 12-03-02 12:31 PM - Post# 85332 I am a public reference librarian with the San Joaquin Valley Information Service in Fresno, CA. I have a patron who is looking for the vacuum diagram ..., If its not a restoration any Kit will do. Most of the major Vendors sell the above kit if you tell them what your doing. Some of the more detailed diagrams have the Hoses wrong for the 80-82 at the headlights. The 80-82's have the Vacume cans opposite. The left can is on the right and the right is on the left.