Firing order 350 chevy

Dec 14, 2023 · What is the 350 Chevrolet firing order? The firing order for a 350 Chevrolet is the special order the engine uses to make the little explosions that make the car go. For a 350 Chevrolet engine, the firing order is 1-8-4-3-6-5-7-2.

Firing order 350 chevy. Small block Chevy firing order explained how the old timers taught me. You should always be able to remember or figure out timing on your sbc after you watch...

Check Chevy 350 SBC Firing Order. This firing order applies to: The firing sequence of 1-8-4-3-6-5-7-2 is used for all small-block Chevy engines, including the following models: 262 Chevy; 267 Chevy; 265 Chevy; 283 Chevy; 302 Chevy; 305 Chevy; 307 Chevy; 327 Chevy; 350 Chevy (5.7 vortec) 400 Chevy

A friend just bought a 1970 Skipjack Open boat with a 350 Chevy marine engine. The engine is not in running order and we’re trying to figure out whether it is a forward or reverse rotating engine. So far, the sources I’ve found give the usual forward rotation firing order of 1-8-4-3-6-5-7-2 and a reverse rotation order of 1-2-7-5-6-3-4-8.Here is a detailed guide on how to adjust valves on a 350 Chevy: Take off the valve covers before carrying out the valve adjustment. Once the cover is off, choose a cylinder you are going to work on. To adjust the intake valve, use your hands to rotate the engine. At the same time, keep your eyes on the exhaust valve of the cylinder.Sep 15, 2022 ... Change Your SBC Engine's Firing Order for Better Performance with a Summit Racing Pro 4-7 Swap Cam ... Chevy sbc 350 SUM1106 cam. Jeff Phillips• ...A friend just bought a 1970 Skipjack Open boat with a 350 Chevy marine engine. The engine is not in running order and we’re trying to figure out whether it is a forward or reverse rotating engine. So far, the sources I’ve found give the usual forward rotation firing order of 1-8-4-3-6-5-7-2 and a reverse rotation order of 1-2-7-5-6-3-4-8.Chevy Tahoe 4.8L firing order. As the base engine option for Chevy Tahoe, the 4.8-liter Vortec V8 stuck around from the second-gen model to the 3rd gen model. The Chevy Tahoe 4.8L firing order is 1-8-7-2-6-5-4-3 and the cylinder configuration includes the first cylinder within the driver’s side bank along with cylinders 3, 5, and 7.Jan 30, 2012 ... I made this video of the correct firing order of my Small Block Chevy before I messed with the wires... Hope this helps someone who might be ...

When GM introduced the LS engine in 1997, it featured many design changes from the Gen 1 Small Block Chevy (SBC) engine that improved engine durability and efficiency. One of those changes was the evolution of the cylinder firing order from the well-known 1-8-4-3-6-5-7-2 to 1-8-7-2-6-5-4-3. In a four-stroke engine, the crankshaft spins twice ...Chevy 350 Firing Order. When it comes to the Chevy 350 Firing Order, the engine will ignite using the following sequence: 1-8-4-3-6-5-7-2. Besides the first number in the sequence (1) there is a spark plug wire, you are going to find the number 8, which presents a similar plug wire. After these two digits, there will be another spark plug wire ...Car shoppers, take note: The Chevy Volt has received a $4,400 price cut amid low sales and a new model. By clicking "TRY IT", I agree to receive newsletters and promotions from Mon...1306 Answers. Posted on Mar 06, 2009. SOURCE: 1990 chevy 350 distributor wiring diagram and firing order. The firing order is 1-8-4-3-6-5-7-2. The distributor rotates in a clockwise direction. The engine must be on the compression stroke on the #1 cylinder. Line up the timing marks. Remove the cap and the rotor should be …First, review the description below showing Small and Big Block Chevy, and other engines using the 1-8-4-3-6-5-7-2 firing order. is it easy to understand?A more detailed explanation follows below the chart. For other engines, use the firing order that matches the engine to create a similar chart. Intake Valve Adjustment: ENGINE OFF!need firing order for a 1972 chevy chevelle. Answered in 5 minutes by: Chevy Mechanic: autodoc_2000. See the answer on the image. autodoc_2000, Auto Technician. Category: Chevy. Satisfied Customers: 2,563. Experience: ASE Master Tech W/Advanced Engine Performance. Verified.The firing order of the 350 Chevy engine is 1-8-4-3-6-5-7-2. This means that each of the eight sparks plugs fires in a specific order. Starting from the number-one plug, the spark plug fires, followed by the number-eight plug, then the number-four plug, and so on.The firing order for Chevy 350 has been stated above to be 1-8-7-2-6-5-4-3; this means that the fuel goes in, sparks, and is ignited first in cylinder 1, then cylinder 8, and so on and so forth, The 350 is typically a V8 engine, meaning it has four cylinders per bank, making it a host of eight.

For a 1985 Chevy S10 with a 2.8L engine the firing order is: 1-2-3-4-5-6 The Distributor rotation is clockwise.Take off the cap and bump engine till the rotor points to the no. 1 plug. this is the no.1 contact on the cap. follow rotation around the cap in order. {ie. 2,3,4 ect.} hope this helps. Oct 12, 2009 • 1985 Chevrolet Chevy.MAS Distributor Cap compatible with ACDelco D303A Chevy GM 350 Efi Tbi Tpi Vortec 5.0L 5.7L GM19 in Distributor Caps.All Chevy small block and big block engines have the same order of cylinder numbers,which means that you can find the same order in any SBC (302, 305, 307, 327, 350, 400, etc.) and BBC (348, 366, 396, 402, 409, 427, 454, 502, etc.) engines. This particular order is to identify the cylinder once the vehicle … See moreSep 25, 2023 · The Chevrolet 5.4L firing order is 1-8-4-3-6-5-7-2 and the same goes for other V8 small block engines that Chevy made back in the day. It features a standard small block V8 design and the firing order is dictated by the way in which the spark plugs are wired into the distributor connection ports. So, we also have to discuss the cylinder order ... Learn how to identify the correct firing order of the Chevy 350 engine, which is 1-8-4-3-6-5-7-2, for the small block and big block variants. Find out the importance of firing order, the difference between ignition crossfires and ignition module, and the firing order of the HEI distributor cap.A stock 350 motor can have as little as 145 horsepower and up to 370 horsepower in the LT1 model that was stock in the late 1960 Corvette. The Chevy stock 350 motor had a huge decr...

Death notices lawrence ma.

Our small-block Chevy firing order is 1-8-4-3-6-5-7-2, so that’s the order in which we will install the plug wires. We started with Number One and worked our way around the distributor cap clockwise using a set of Summit spark plug wires. The best way to do this so you don’t get confused is to just follow the firing order installing each ...The firing order 1-8-4-3-6-5-7-2 applies to engines like the 366 Chevy, 396 Chevy, 402 Chevy, 427 Chevy, 454 Chevy, and 502 Chevy. This firing sequence ensures that the spark plugs ignite in the correct order, maximizing engine performance. When the piston is at Top Dead Center on the compression stroke, the distributor’s blade should …The firing order sequence is very important. For example, a typical inline four-cylinder has a 1-3-4-2 firing sequence, and a typical Chevy firing order for a V6 is 1-6-5-4-3-2. The goal is to produce the maximum amount of power without side effects, such as knocking or accelerated crankshaft wear.The proper Chevy 350 timing marks can be anywhere between 2 and 12 degrees Before Top Dead Center (BTDC). However, spark plugs and plug spacing are the determining elements. It would also require fewer spark plugs if they were a little thicker. However, the initial advanced, proper time is often 12 degrees.

Learn how to identify the correct firing order of the Chevy 350 engine, which is 1-8-4-3-6-5-7-2, for the small block and big block variants. Find out the importance of firing order, the difference between ignition crossfires and ignition module, and the firing order of the HEI distributor cap. The firing order for a Chevy 350 V8 small block is 1-8-4-3-6-5-7-2, while the firing order for a Chevy 350 V8 big block is 1-8-4-3-6-5-7-2 as well. When it comes to the firing order for a Chevy 350 V8 engine, we’ve got not just one, but two variations to consider: the small block and the big block. Chevy Small-Block Firing Order and Torque Sequences - Covers Engines: 262, 265, 267, 283, 302, 305, 327, 350, and 400-ciThe firing order on a 5.3 Chevy engine is 1-8-7-2-6-5-4-3. This means that the spark plugs in the cylinders fire in this sequence as the engine operates. The firing order helps to distribute power evenly across the cylinders and ensures that the engine runs smoothly. Understanding the firing order is important for proper maintenance and ...The firing order for a Chevy 350 is 1-8-4-3-6-5-7-2. In essence, this means that the number 1 spark plug wire is the number 8 spark plug wire. The fourth spark plug wire is next to it, and so on. This is in a clockwise rotation. Continue reading to find out more about the 350 Chevy engines’ firing order.In a 1992 Chevy 5.7 engine, the firing order is 1-8-4-3-6-5-7-2. This means that the spark plugs fire in the following order: cylinder 1, cylinder 8, cylinder 4, cylinder 3, cylinder 6, cylinder 5, cylinder 7, and finally cylinder 2. The correct firing order ensures that the engine runs smoothly and efficiently.The firing order works for the following Small Block Chevy Engines - 283 Chevy. 302 Chevy. 305 Chevy. 307 Chevy. 327 Chevy. 350 Chevy (yes the 5.7L) 400 Chevy. The …Most Chevy small block and big block V-8 engines use the firing order 1-8-4-3-6-5-7-2. The LS family of V-8 engines has a 1-8-7-2-6-5-4-3 firing order, according to Reference.com. ...what is the firing order for a 350 chevy engine a 1995. Answered in 2 minutes by: Chevy Mechanic: GM Tech (Cam) Welcome. The firing order is 18436572 and the distributor rotates clock wise looking on the top of it. GM Tech (Cam) Category: Chevy. Satisfied Customers: 32,822.The cylinder numbering on the 3.8L V6 is quite different from that of the 4.3 V6 engine. In this case, the #1 cylinder is the one you first see on the left looking at the engine from the front of the vehicle. The sequence then continues to the right as 1, 3, and 5. Other cylinders are on the rear side with sequence numbering as 2, 4, and 6.Chevy Mechanic: Ron Z. Not exactly sure. If it's a '89 Chevy 350 - thats the firing order. They haven't changed this firing order in forever. Same order i run in my 71 Olds 350R that i converter to electronic ignition, so i'd say there's a good shot. Ask Your Own Chevy Question.Jun 21, 2023 · Spark plug ignition for the Chevy 350 Small Block V8 engine utilizes a clockwise rotation and an order of 1-8-4-3-6-5-7-2. For the 5.3L V8, you should use a similar setup with the firing order being 1 – 8 – 7 – 2 – 6 – 5 – 4 – 3 in a clockwise direction. As for the Chevy 5.7 engine, it follows suit with its own combination of ...

Sep 24, 2022 ... Here is the firing order for GM and Chevy 5.3L Vortec engine ... firing-order/ Cylinder spark plug firing order ... AnthonyJ350•104K views · 5:01.

Firing order of our SBC/BBC BluePrint Engine line. All of our small block and big block Chevy engines have the following firing order: The firing order on a SBC 350 V8 is...1-8-4-3-6-5-7-2. If you are planning to replace your ignition wires always do 1 wire at a time. The # 1 spark plug is the drivers side front of the engine. Trace that ignition wire to the distributor cap and you now have #1. The wires runclockwise. So the next wire in line would be #8 , the next will be #4 ...The firing order works for the following Small Block Chevy Engines - 283 Chevy. 302 Chevy. 305 Chevy. 307 Chevy. 327 Chevy. 350 Chevy (yes the 5.7L) 400 Chevy. The …Last updated on 01/04/2023. When GM introduced the LS engine in 1997, it featured many design changes from the Gen 1 Small Block Chevy (SBC) engine that …Nov 16, 2023 · SBC Firing Order. The LS firing order, or Chevy 5.3 firing order, adopted a new pattern: 1-8-7-2-6-5-4-3. This change from the Chevy small block firing order was a move to enhance engine performance. I remember working on a Chevy with a 5.3-liter engine. This wasn’t the traditional Chevy small block firing order I was used to. The firing order diagram for a Chevrolet 350 engine is a graphical representation of the correct sequence in which each spark plug is fired. The firing order is important because it determines the timing of the engine’s combustion process, ensuring that each cylinder ignites at the right moment.Chevy 1978- 305 engine, Bank #1, from front to back is 1-3-5-7 Bank #2, from front to back is 2-4-6-8. The firing order is 1-8-4-3-6-5-7-2. Distributor rotation is clockwise. 8 degrees BTDC.You should always use the under the hood sticker for the propper settings and how to proceed. Good Luck and happy new year, from Ernie @ RedDeer, Alberta ...The firing order for a Chevy 350 V8 small block is 1-8-4-3-6-5-7-2, while the firing order for a Chevy 350 V8 big block is 1-8-4-3-6-5-7-2 as well. When it comes to the firing order …The firing order on a 5.3 Chevy engine is 1-8-7-2-6-5-4-3. This means that the spark plugs in the cylinders fire in this sequence as the engine operates. The firing order helps to distribute power evenly across the cylinders and ensures that the engine runs smoothly. Understanding the firing order is important for proper maintenance and ...

Kosher restaurants deal nj.

Marcqi.

The firing order is 1-8-4-3-6-5-7-2. The distributor rotates in a clockwise direction. The engine must be on the compression stroke on the #1 cylinder. Line up the timing marks. Remove the cap and the rotor should be pointing to approximately the 5 o'clock position. Good Luck.Jun 7, 2021 · Chevrolet’s first design started in the early 1950s, and in 1955, the company released the 265 cubic inch, 162hp V-8. Soon after, Chevy released the 283 in 1957, followed by the very popular 327 in 1962. Then in 1967, Chevy had a big year with the release of the 302 and 350 engines. The 302 still used a 4-inch bore, but had a shorter 3-inch ... A stock 350 motor can have as little as 145 horsepower and up to 370 horsepower in the LT1 model that was stock in the late 1960 Corvette. The Chevy stock 350 motor had a huge decr...Jun 22, 2023 · The firing order sequence is very important. For example, a typical inline four-cylinder has a 1-3-4-2 firing sequence, and a typical Chevy firing order for a V6 is 1-6-5-4-3-2. The goal is to produce the maximum amount of power without side effects, such as knocking or accelerated crankshaft wear. Originally Posted by 7T1vette. The order is 1-8-4-3-6-5-7-2 in the clockwise direction looking down at the top of the distributor. But, the #1 plug wire can be made to work in ANY one of the available positions. Also, there are some camshafts that are made with a 1-8-7-3-6-5-4-2 order (supposed to run a bit smoother and make a smidgen more power).Replacing speakers in a vehicle is one of the simplest and most cost-effective ways of improving the sound in your car. The Chevrolet Colorado is a good candidate for speaker repla...The firing order in Chevy V6 engines is helpful for the engine to make sparks in the engine. It is efficient for the engine to work smoothly. The order for the 4.3L, 3.8L, and 3.3L V6 engines is always 1-6-5-4-3- 2. Knowing which cylinder is which is also important. Suppose the engine looks like a cup, so the first three (1, 3, 5) are on one ...GM 5.7L firing order. Talking about the small-block V8 version, the GM 5.7L firing order is 1-8-7-2-6-5-4-3, just like for the previous and successor engines of the same type. This makes things more convenient for DIY mechanics since you won’t have to bother about using the wrong firing order of another small block V8. ….

Posted on Monday, May 31, 2010 - 12:40 pm: If the standard 350 engine firing order you have is 18436572 then the counter rotation engine should be 12756348. Note line up number one cylinder which is the same cylinder as on a normal rotation engine and wire the engine dist in the direction of dist rotation and with the second order I gave you ...The firing order is 1-8-4-3-6-5-7-2. The distributor rotates in a clockwise direction. The engine must be on the compression stroke on the #1 cylinder. Line up the timing marks. Remove the cap and the rotor should be pointing to approximately the 5 o'clock position. Good Luck.Chevrolet 5.0L V8 firing order To cut straight to the point – the Chevrolet 5.0L V8 firing order is 1-8-4-3-6-5-7-2 and it’s the same firing order used in the 350 cu in engine. in fact, these two share quite a lot in common, including the engine block and cylinder head design, as well as the majority of the inner engine components.Further, if you take the 351 and late-5.0L Ford firing order and renumber the cylinders like a Chevy, the firing order is 1-8-7-2-6-5-4-3. That's the same as the Chevy Gen III and IV (LS-series) V-8s. ... he went so far as to say he'd actually lost a little power once when testing the 4/7 swap on a stock 350 Chevy. Some claim that the firing ...Get ratings and reviews for the top 7 home warranty companies in Chevy Chase, MD. Helping you find the best home warranty companies for the job. Expert Advice On Improving Your Hom...I have a 1987 Chevrolet silverado 1500 4wd 350 w/fuel injection. No motor in it currently. I have 2 motors and want to make something work. One is a 97 Chevy vortec 350, complete motor and the other i … read moreBest Answer. 1-8-4-3-6-5-7-2 The firing order listed above as 18436572 is correct and goes clockwise (to the right) on all Chevy v-8 engines. This firing order is also molded into the stock intake ...A small block Chevy cast-iron bare block weighs approximately 200 lbs. while a small block Chevy aluminum engine block weighing between 110-140 lbs., …The 5.7 firing order is not universal and it can depend on the engine type and manufacturer. Chevy 5.7 Firing Order. 1-8-4-3-6-5-7-2. Explanation of 5.7 Chevy firing order. The 5.7 Chevy firing order is 1-8-4-3-6-5-7-2, which means that the cylinders fire in the following order: Cylinder 1 fires first, followed by cylinder 8. Firing order 350 chevy, Application Details. Gen. 1 and 2 Small Blocks. Note: The Gen. 2 distrubutor was mounted on the front of the block. All Big Blocks, except Gen. 7., This firing order is often used in Chevy engines with a 90-degree V6 configuration, such as the Chevy 4.3L V6 engine. Another firing order diagram that is commonly used for Chevy V6 engines is the 1-2-3-4-5-6 firing order. This firing order is typically found in Chevy engines with a 60-degree V6 configuration, such as the Chevy 3.8L V6 engine., GM may be replacing tens of thousands of Bolt EV batteries, but it won’t have to pick up the tab for most of them. The automaker has reached a deal that will have LG pay nearly all..., Chevy 350 Small Block (SBC) Firing Order. The Chevy 350 Small Block is one of the most popular and widely used V8 engines in automotive history. Its firing order is a well-known and critical piece of information for anyone working with this engine. The firing order for the SBC Chevy 350 is 1-8-4-3-6-5-7-2., The Chevy Camaro 3.8L firing order is 1-6-5-4-3-2 and that’s another major difference between this one and the 3.4L model. Chevy Camaro 5.7L firing order. For lovers of muscle cars like the Camaro, the 5.7L-powered SuperSport model featuring the mighty LT1 engine was an obvious option. The Chevy Camaro 5.7L firing order is 1-8-4 …, SBC Firing Order. The LS firing order, or Chevy 5.3 firing order, adopted a new pattern: 1-8-7-2-6-5-4-3. This change from the Chevy small block firing order was a move to enhance engine performance. I remember working on a Chevy with a 5.3-liter engine. This wasn’t the traditional Chevy small block firing order I was used to., The firing order works for the following Big Block Chevy Engines -. 366 Chevy. 396 Chevy. 402 Chevy (Sometimes referred to as a 396) 427 Chevy. 454 Chevy. 502 Chevy. Also remember that the position of the spark plug wires does not matter AS LONG AS THE ORDER IS MAINTAINED! If you need to rotate the cap for any reason don't worry about pulling ... , The firing order for a Chevy 350 V8 small block is 1-8-4-3-6-5-7-2, while the firing order for a Chevy 350 V8 big block is 1-8-4-3-6-5-7-2 as well. When it comes to the firing order for a Chevy 350 V8 engine, we’ve got not just one, but two variations to consider: the small block and the big block. ..., The firing order of the Chevy small block 305 is 1, 8, 4, 3, 6, 5, 7, 2. This firing order is essential in allowing each spark plug to ignite at the correct time, thus allowing the correct amount of fuel-air mixture to enter the cylinders at the right time. The sequence will also help to minimize vibrations due to the opposite cylinder firing ..., Sep 12, 2013 · Here's a clip from our How To adjust Valves on your Small Block Chevy DVD. This short clip describes the firing order on a Small or Big Block Chevy engine. F... , It’s official: a fully electric Chevy Corvette is coming — with new battery technology to boost its range, acceleration and efficiency. When it arrives, the battery-electric sports..., The firing order of the 350 Chevy engine is 1-8-4-3-6-5-7-2. This means that each of the eight sparks plugs fires in a specific order. Starting from the number-one plug, the spark plug fires, followed by the number-eight plug, then the number-four plug, and so on., The LBZ Duramax engine, used in Chevrolet and GMC trucks from 2006-2007, has a standard firing order of 1-2-7-8-4-5-6-3. However, some owners choose to install the alternate firing order camshaft of 1-5-6-3-4-2-7-8 to improve balance and reduce vibration., The firing order for a Chevy 350 V8 small block is 1-8-4-3-6-5-7-2, while the firing order for a Chevy 350 V8 big block is 1-8-4-3-6-5-7-2 as well. When it comes to the firing order …, V8 (all) Counter-. Clockwise. 18436572. Left: 1-3-5-7, Right 2-4-6-8. Note: All American V8s have offset cylinder banks to accommodate side-by-side rod pairing on the crank throws. In the absence of published information, the number one cylinder will almost always be the one that is farthest forward regardless of which bank it is on., Aug 26, 2022 · Small Block Chevy Firing Order Below is the firing order for small block Chevy engines, including 262, 263, 265, 267, 283, 302, 305, 307, 327, 350, 383 (stroker), and 400 CID sizes. Engine Compression Ratio Calculator , Best Answer. 1-8-4-3-6-5-7-2 The firing order listed above as 18436572 is correct and goes clockwise (to the right) on all Chevy v-8 engines. This firing order is also molded into the stock intake ..., Car shoppers, take note: The Chevy Volt has received a $4,400 price cut amid low sales and a new model. By clicking "TRY IT", I agree to receive newsletters and promotions from Mon..., Jan 30, 2012 ... I made this video of the correct firing order of my Small Block Chevy before I messed with the wires... Hope this helps someone who might be ..., Chevy 350 Firing Order. When it comes to the Chevy 350 Firing Order, the engine will ignite using the following sequence: 1-8-4-3-6-5-7-2. Besides the first number in the sequence (1) there is a spark plug wire, you are going to find the number 8, which presents a similar plug wire. After these two digits, there will be another spark plug wire ..., Found the correct firing sequence of a Chevy 350 V8 on the internet and it helped me get my plug wires where they should be. Now the AMC Rambler is purring ..., We would like to show you a description here but the site won’t allow us., SBC Chevy V8 engine from our Hot Rod Plow Truck gets hydraulic lifter valves set and we prime the V8 oil pump system with a screw driver + socket. We also sh..., Will a 1988 chevy scottsdale transmission enterchange with earlier model transmissions like 1983 or 1984 with 350 or 305 engines. Three different transmissions could be in either the 88 or the 83 or84. The 4 speed auto 700r4, the 9 inch tail t-350, or the 9 inch tail t-375. as long as it is the same type transmission, they will interchange., What is the 350 Chevrolet firing order? The firing order for a 350 Chevrolet is the special order the engine uses to make the little explosions that make the car go. For a 350 Chevrolet engine, the firing order is 1-8-4-3-6-5-7-2., Apr 6, 2024 · The Chevy 350, SBC, and BBC engines all use the same firing order. This firing order is -1 (first spark), 0 (second spark), +2 (third spark), +1 (fourth spark), -2 (fifth spark), -1 (sixth spark). The firing order of the distributor cap is the same, except that it’s set up so that it fires in the opposite direction. , Small Block Chevy V8. 267, 305, 327, 350, 400 cid. Generation I (1955-1980) Firing Order, Reher-Morrison offers racing cams for big blocks custom ground by Erson for a revised firing order of 1-8-7-3-6-5-4-2, a common practice in Pro Stock engines now of days, I've heard. You will note that this firing order is the same as the revised late model GM firing order, except for #3 and #2 cylinders being reversed. , We would like to show you a description here but the site won’t allow us., The firing order diagram for a Chevrolet 350 engine is a graphical representation of the correct sequence in which each spark plug is fired. The firing order is important because it determines the timing of the engine’s combustion process, ensuring that each cylinder ignites at the right moment., Application Details. Gen. 1 and 2 Small Blocks. Note: The Gen. 2 distrubutor was mounted on the front of the block. All Big Blocks, except Gen. 7., The firing order for all smallblock V8 Chevy engines is 1.8.4.3.6.5.7.2 and the distributor rotates clockwise. The cylinder numbers are 2-4-6-8 on the passenger side from front to rear. The ..., Here's where we'd suggest a clearance of 0.0022 to 0.0025. A rough rule of thumb is 0.001 inch for every 1.0 inch of journal diameter. So for a 3.00-inch Olds big-block main journal diameter, you ...