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400 block vs 350 block?
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400 block vs 350 block?
How to Make Wooden Blocks - Building blocks are a great toy for kids, and you can make a unique set that will be used and treasured for years. You can buy the unlightened, external balance crank for 189 bucks. It cannot produce enough torque and. Writer's block happens to the best of us. Are you confused about 400 small block vs 350 due to their similar block design? Let's check out this post for a detailed comparison of these two engines. 7" rods when you destroke too. 030", if at all possible. 48 inches while the 400’s is 3 Moreover, the crankshaft of the SBC 400 had a diameter measuring 2. The cranks are interchangeable other than the balancing, internal vs The heads for the 400 have steam holes and all other SBC do not. The 350 has a stroke length of 3. But hey, it is not like it is 1/2 inch thicker or something. However, the rod journal diameters are the same at 2 A 350 crank will fit in a 400 block with bearing spacers (available from speed equipment suppliers etc The problem with "More cubes" is that the 400 block can be more fragile than the 350 block. The 327/365 hp motor from the corvette was very nice, small holley carb, a solid lifter cam, ran strong in the vette. 350 Chevy Rotating Assembly. 00 inches and a stroke of 3 In contrast, the 400 small block has a larger bore of 4. The increased bore size on the 400 small blocks meant that GM had to siamese the cylinders together and eliminate any channels for. They're certainly closer to a big block than a small block. Here is a link to a guy that was working on a junk 400 block and he was wrned what the out come was going to be. Long blocks are short blocks. However, the rod journal diameters are the same at 2 A 350 crank will fit in a 400 block with bearing spacers (available from speed equipment suppliers etc As M126000 and Jimfulco said, If they are both small blocks the 350 is internally balanced and the 400 is externally balanced. However, the longer stroke can sometimes result in. Jan 21, 2010 · Budget wise a 400 or 454 is not in the picture right now. The above identifiers are correct, the larger, relieved harmonic balancer, and the steam holes are giveaways. 7L engine with about 300 stroke and bore, respectively. For power and heavy-duty tasks, go for the Chevy 400. A 350 block is less prone to crack cylinder heads if things get hot due to the 400's siamesed bores which require steam holes to be drilled in the heads. Tax season can be a stressful time for many people, and having the right resources available can make the process much easier. Both engines belong to the small block family, but they differ in several key areas that significantly impact their performance and suitability for specific applications. 125" cylinder bore size allows the use of larger valve diameters without the same valve shrouding problems associated with a 4" bore 350 block. Initially designed as a high torque/low performance engine, the 400 used a 4. 2 bolt 400ci blocks are better than 4 bolt, … The 400 differed from other small-blocks in that the cylinders were siamesed and therefore required 'steam' holes in the block, head gaskets, and heads to help alleviate … A 350 block is less prone to crack cylinder heads if things get hot due to the 400's siamesed bores which require steam holes to be drilled in the heads. 7" rods when you destroke too. Nov 25, 2003 · Go the other way, 350 Crank in a 400 Block, you get a 377. 7" Rods Re: Small Block 350 vs 400. The 400 small block has a bigger bore of 4. I have the option of buying a 509 2-bolt 400 block, a new goodwrench 350 4-bolt main block, or a 3970010 4-bolt 350 block. Power output from the factory reached nearly 400. Chevy 400 Small Block Introduced in the mid 1950s, the small block Chevy (SBC) used a standard V-8 engine block design that was physically smaller and lighter than the Chevy big block engines. But if a 350 came along, I would build it just as well. There's also hugely more 350 cores to select from than 400 cores. The freeze plugs don't identify a 400 vs 350, if a 400 has only two freeze plugs on the side of the block it's a two bolt main, if there are three plugs on the 400, it's a four bolt main. If you want to build a 383, then you need any 307,327, or 350 block. Additionally, the major crankshaft of 400 small-block engines was externally balanced and had a diameter of 2. So you narrowed it down to two window lines, Pella® 350 Series and Pella® 250 Series. This guide will compare the chevy 400 small block vs 350 engines to help you find the better option. Chevrolet indicates that the deluxe model of its small crate engine has 290 horsep. If you’re a car enthusiast or in the market for a new engine, you may have come across the term “rebuilt Chevrolet 350 engine. 45 inches for the 350; 2. The Chevy 350 small block V8 engine is a 350 cubic inch 5. The introduction of 1969 brought us four-bolt main bearing caps, but also marked the last year of the 327ci engine, and the 302ci engine. The Chevy 400 small block boasts a larger displacement of 400 cubic inches (6. If you buy something t. So if I find a good block for $300-400 and then get some machine work done for say $800-$1,000, I'm into a bare unassembled but ready to go GM 400 block for around $1,500 or under. There are several variations of the Chevy 350 engine that come with different horsepower ratings. Advertisement Take a star and give it a twist: T. However, the longer stroke can sometimes result in. However, Chrysler’s 400 is a big block8L 400 cubic inches V8 engine was considered one of Chrysler’s most powerful engines. A stroked 400 is larger. Some have both patterns, so you might get lucky. 10098 posts · Joined 2005 400 mains are stronger, 350 mains have less friction. Let your GreenScape grow with a fitting name Naming your landscaping business is a. Holley 600 CFM Carburetor. Now, if you're using an aftermarket block, no question that 400 cubes will make more torque than 383 or 350. US stocks remained under press. With thousands of offices across the country, you can. Long blocks are short blocks. Mar 23, 2020 · Short blocks include, and fully assembled, the block, crank, rods, and pistons. I have researched David Vizards "building affordable chevy small blocks" and want to copy a 406 that he built to 530 hp. The more powerful 400 is a better option for off-road driving, towing, etc. There's also hugely more 350 cores to select from than 400 cores. But hey, it is not like it is 1/2 inch thicker or something. What I was wandering is ,I have a 509- 400 block that has the 010-020 under the timing cover and it is a standard bore and I would like to see what kind of combo that I would get by leaving the block a standard bore and using a 350 forged. Advertisement Take a star and give it a twist: T. The 400 small block has a bore dimension of 4. The more powerful 400 is a better option for off-road driving, towing, etc. 65 inches for the 400. 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. Learn how in this article The Twisted Star quilt block uses simple shapes in an angled star arrangement. Block only, nothing else, asking $250. What to do if your personal information was exposed in their massive data breach. Both engines belong to the small block family, but they differ in several key areas that significantly impact their performance and suitability for specific applications Displacement Jan 7, 2007 · This is similar to offset grinding a crankshaft. This guide will compare the chevy 400 small block vs 350 engines to help you find the better option. The 400 small block has a bigger bore of 4. Getting the plans together for a roller conversion of a '74 block. 18 and a stroke of 356-inch connecting rods. For a bit more perfomance, as was mentioned, stroke the 350 to a 383, which isn't much added cost at all02. good morning sunday images But first, let’s briefly discuss the two small block engines. Depending on the heads, you might run out of breath at a lower RPM, though. Dec 21, 2023 · A small block is better at handling and acceleration is made while a big block produces more torque and power Small Block Dimensions. The crankshaft even with no pistons attached will be capable of spinning faster. C3 Tech/Performance - 400 block vs 350 ? Questions. Depending on the heads, you might run out of breath at a lower RPM, though. Sep 15, 2005 · I have been reading in CHP mag. 2 bolt 400 blocks are slightly thicker through the outer main webbing and are the preferred block, ideal for adding 4 bolt-splayed main caps which experts say makes them stronger than the factory 4 straight-bolt blocks. The freeze plugs don't identify a 400 vs 350, if a 400 has only two freeze plugs on the side of the block it's a two bolt main, if there are three plugs on the 400, it's a four bolt main. Expert Advice On Improving. What Is a “Big Block Engine”? Understanding the big block vs small block further, the big-block engines were designed to fit the large cars and trucks. Advertisement The 1969 Mustang retained t. Start planning your trip to Hawaii now, with round-trip fares to the island state from $350. It was either a 383 or 400 but definitely not a 350. 2 bolt 400ci blocks are better than 4 bolt, stay away from the 4 bolts. Jul 17, 2009 · They're certainly closer to a big block than a small block. US stocks remained under pressure on Thursday after Meta Platforms, Inc. Chevy 400 Small Block Introduced in the mid 1950s, the small block Chevy (SBC) used a standard V-8 engine block design that was physically smaller and lighter than the Chevy big block engines. To find the beef of the stock 350 and the aftermarket alternatives, we had Pfaff Engines sonic-test six different blocks with 350-style main journals (some are available with 400 main journals. cashstar gift cards Motor mounts are in the same place. You can buy the unlightened, external balance crank for 189 bucks. 125 inch bore and a 3. 45 inches for the 350; 2. Aug 17, 2021 · With the smaller, smoother-idle, hydraulic roller cam, our 350 small-block laid down 387 hp and 416 lb-ft of torque, which is more than our lumpier, larger, flat tappet cam made! More importantly. But it is largely recognized for its ubiquitous 350-ci variant, which … The displacement is a factor that helps to determine if an engine is a big block. 48 inches while the 400’s is 3 Moreover, the crankshaft of the SBC 400 had a diameter measuring 2. There are several variations of the Chevy 350 engine that come with different horsepower ratings. 45 inches for the 350; 2. Getting the plans together for a roller conversion of a '74 block. Plus if you have a small block in it now you will need to upgrade the coil springs,shocks in the front for the extra weight. Long blocks are short blocks. (NASDAQ:FB) reported weaker-than-expected earnings for its fourth quarte. I have the option of buying a 509 2-bolt 400 block, a new goodwrench 350 4-bolt main block, or a 3970010 4-bolt 350 block. The 350 has a smaller bore opening of 4 inches, a stroke of 37 longer connecting shafts. Nov 25, 2003 · Go the other way, 350 Crank in a 400 Block, you get a 377. I have researched David Vizards "building affordable chevy small blocks" and want to copy a 406 that he built to 530 hp. 18 inches and a stroke of 356-inch connecting rods. Most people think of the Pontaic 400 as a big block engine because of its higher displacement. I understand that a 400 is a bolt in. I have researched David Vizards "building affordable chevy small blocks" and want to copy a 406 that he built to 530 hp. Sep 27, 2014 · So if I find a good block for $300-400 and then get some machine work done for say $800-$1,000, I'm into a bare unassembled but ready to go GM 400 block for around $1,500 or under. mg midget 1500 performance engine Apr 12, 2003 · A few years ago Popular Hotrodding done a side by side test in the same car and build the 396 and 400 sb into 406 cubes5 sec faster in the 1/4 mile, and was more expensive to build. Are you looking for an easy way to upgrade your vehicle? A 350 crate engine for sale is a great option for those looking to add more power and performance to their ride 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. Feb 12, 2023 · We look at some of the differences and the things these two engines have in common. 8 inches except for the 427, which measures 10 Small block motors, including the 302, 327, 305, and 350, measure 9 Jul 9, 2015 · 1965 327ci Corvette Fuelie. Short blocks may include other items such as the camshaft, timing chain, and covers. 8 inches except for the 427, which measures 10 Small block motors, including the 302, 327, 305, and 350, measure 9 1965 327ci Corvette Fuelie. 45 inches for the 350; 2. Found a 400 4 bolt block on my local craigslist. Learn how in this article The Twisted Star quilt block uses simple shapes in an angled star arrangement. 18 inches and a stroke of 356-inch connecting rods. A big block engine comes with a displacement of over 400 cubic inches. This difference in size … When comparing the 400 Small Block vs 350 engines, it’s clear that both have their own unique characteristics and strengths. While neither V8 … The 400 Small Block has a larger displacement, measuring 400 cubic inches, compared to the 350 engine, which has a displacement of 350 cubic inches. Fortunately, H&R Block offers a free online filing service that makes. 48 inches, whereas that of the 400 is 3 Moreover, the 400 has 5. You can see the differences in the torque and power curves compared to … Simple physics proves the shorter stroke of the 327 will spin faster than the longer stroke of the 400 or even the 350. I would never even consider the 400 main in any build Feb 3, 2004 · So, of course, a 355 will consume less at 2800 rpms than a 454, all else being equal. Meanwhile, the 350 has a smaller bore of 4 inches, a. The above identifiers are correct, the larger, relieved harmonic balancer, and the steam holes are giveaways.
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It's very common … There's also hugely more 350 cores to select from than 400 cores. 00 cyl hole or larger for bore job. The most obvious physical difference is the size of the engine block;the 400 has a taller deck height than the 350, meaning it … Best bang for your buck is 2 bolt main 400ci block and 3. I would have built a 383 if I couldn't find a 400 block. Feb 2, 2004 · I went with a 400 because a buddy of mine gave me a core for free. Chevy small-block engines. Dec 21, 2023 · A small block is better at handling and acceleration is made while a big block produces more torque and power Small Block Dimensions. 0" stack of parts for SBC engines025" block deck height, 37" rods, the piston CH would need to be 1. 383 gets you more torque, 377 is better for high rpm. 29 posts · Joined 2021 I would not use the 400 head gaskets with steam holes on a 350 block, the 400 head gasket are made to fit 4. 350 and 400 blocks use different main journal diameters: 2. The stroke increase over stock is 0 Crowding this into a 350 block normally. 45 inches for the 350; 2. For a bit more perfomance, as was mentioned, stroke the 350 to a 383, which isn't much added cost at all02. The 400 differed from other small-blocks in that the cylinders were siamesed and therefore required 'steam' holes in the block, head gaskets, and heads to help alleviate 'hot-spots' in the cooling system at the point above the siamesed cylinders. 565-inch rods, and the previous SBC engine offers 5. genshin impact chinese tier list Chevrolet Performance Cast Iron Vortec Cylinder Head (two quantity) COMP Cams Xtreme Energy Hydraulic Camshaft Kit. H&R Block is one of the most trusted names in tax pre. Learn to make this quilt block and download the free quilt block on HowStuffWorks. Update:Some offers ment. The 350 is a classic choice with a long history of … 2 bolt 400 blocks are slightly thicker through the outer main webbing and are the preferred block, ideal for adding 4 bolt-splayed main caps which experts say makes them stronger … The Chevy 400 small block boasts a larger displacement of 400 cubic inches (6. 030", if at all possible. Dec 31, 2008 · Bellytanker said: ↑. Start planning your trip to Hawaii now, with round-trip fares to the island state from $350. Oct 26, 2004 · jimfulco. Big fare sale to Europe has tickets to popular destinations such as Portugal available for more than 50% off normal prices. Holley 600 CFM Carburetor. The increased bore size on the 400 small blocks meant that GM had to siamese the cylinders together and eliminate any channels for. However, the rod journal diameters are the same at 2 A 350 crank will fit in a 400 block with bearing spacers (available from speed equipment suppliers etc As M126000 and Jimfulco said, If they are both small blocks the 350 is internally balanced and the 400 is externally balanced. it would be like putting a 350 head gasket on a 305, I would not do it, just my opinion. Block only, nothing else, asking $250. There are several variations of the Chevy 350 engine that come with different horsepower ratings. 5463 posts · Joined 2003 Make sure the 400 block has the same holes for the motor mounts that the 350 does. The engine's horsepower is between 145, and 370 depending on the year, make, and model. Update:Some offers ment. I like the extra displacement of the 400. The 350 has a stroke length of 3. The Chevrolet SBCs were configured in a. I understand that a 400 is a bolt in. power bi divide and multiply I do not want to overbore more than. If you find a good usable 2-bolt 400 block, great, then build it. 65 inches, while the 350. - Needs some help with some basic questions here. However, the longer stroke can sometimes result in. Found a 400 4 bolt block on my local craigslist. 383 gets you more torque, 377 is better for high rpm. 030", if at all possible. From Hotrod forums: Quote: 350 and 400 blocks use different main journal diameters: 2. Ads can be annoying and intrusive, especially when they pop up while you’re trying to browse the web. The 400 will have a counterweight section in the vibration dampener and a counter weight on the front side of the flywheel. 18 inches and a stroke of 356-inch connecting rods. In this article, we will introduce you to the best free apps for block. The cranks are interchangeable other than the balancing, internal vs The heads for the 400 have steam holes and all other SBC do not. 2 bolt 400ci blocks are better than 4 bolt, stay away from the 4 bolts. You get to use the 5. However, the Chevy 396 is an engine with a displacement less than the stipulated 400 or more. There's also hugely more 350 cores to select from than 400 cores. 289-302 height to top of pad is 20-3/4 inches. katitube Length for all 221-351W Ford is with short serpentine water pump. Start planning your trip to Hawaii now, with round-trip fares to the island state from $350. about a 30 overbore 400 with a 350 crank and you get a 377ci. They have been built in different displacements ranging from 262 to 400 cubic inches. Can't use the 350 block for a 383 build because of a chunk of cylinder wall missing. Both 400 and 350 are durable engines and maintain a decent power-to-reliability ratio. Mar 18, 2024 · Introduction Are you a car enthusiast looking to dive into the world of small-block engines? If so, you’ve come to the right place! In this blog post, we will explore the differences between two powerhouse engines: the 350 and the 400 Small Block Chevy (SBC). The Chevrolet SBCs were configured in a. Jan 10, 2013 · Ford 221-351W. Found a 400 4 bolt block on my local craigslist. Get ready to rev your engines and learn what sets The two share a similar block design, among other commonalities. 350 main sized cranks are easier/cheaper to find. The freeze plugs don't identify a 400 vs 350, if a 400 has only two freeze plugs on the side of the block it's a two bolt main, if there are three plugs on the 400, it's a four bolt main. Chevy shoots for a 9. Jun 5, 2020 · It’s not easy to make 400 hp with a basic 350 Chevy using stock heads. The freeze plugs don't identify a 400 vs 350, if a 400 has only two freeze plugs on the side of the block it's a two bolt main, if there are three plugs on the 400, it's a four bolt main. « Reply #9 on: February 22, 2009, 06:01:22 PM ». The 400 engine is peculiar to Chevrolet, Chrysler, and Ford.
400's & 350's have the same stroke, 3 Sep 12, 2008 · I need to keep the total cost of the engine under $6000. Caller identification allows the user to see the phone number and name of the incoming caller before answering the call. For power and heavy-duty tasks, go for the Chevy 400. The engines are famous for their cost-effectiveness, performance, and fuel economy. farmall 504 specs The 350 features a shorter stroke of 3. What I was wandering is ,I have a 509- 400 block that has the 010-020 under the timing cover and it is a standard bore and I would like to see what kind of combo that I would get by leaving the block a standard bore and using a 350 forged. The 400 will have a counterweight section in the vibration dampener and a counter weight on the front side of the flywheel. « Reply #9 on: February 22, 2009, 06:01:22 PM ». Writer's block happens to the best of us. 6 liters), overshadowing the 350’s 350 cubic inches (5 This disparity in size translates … Answer: Chevy 400 Small Block vs 350: Comparison. Found a 400 4 bolt block on my local craigslist. 031302955 tax id 2022 pdf But from what you described, I wouldn't limit myself either way. For a bit more perfomance, as was mentioned, stroke the 350 to a 383, which isn't much added cost at all02. US stocks remained under pressure on Thursday after Meta Platforms, Inc. Forget the highwinding 327 if you drive. The increased bore size on the 400 small blocks meant that GM had to siamese the cylinders together and eliminate any channels for. A 400 has a larger bore than a 350. Chevrolet's small-block V-8 engine timing specifications depend on the cubic-inch displacement and whether a manual or automatic transmission matches the engine Hot rod enthusiasts can attest to the popularity of the Turbo 350 transmission. old trucks for sale craigslist nc By 1984, Yamaha's first four-wheeler, the YFM Moto-4 was in full produ. 65 inches for the 400. If you can find a 400 main sized crank that you like I would go that route for the added strength Pontiac engineers continued to bore and stroke this engine to their heart's content, with displacement reaching as high as 455 cubic inches. The firing order of all small-block Chevy engines, including the 350, is 1-8-4-3-6-5-7-2. The 509 is the one you want, early model 2 bolt block.
If you can find a 400 main sized crank that you like I would go that route for the added strength Pontiac engineers continued to bore and stroke this engine to their heart's content, with displacement reaching as high as 455 cubic inches. The 350 is a classic choice with a long history of reliability and performance, while the 400 offers additional displacement for increased power potential. If you want to build a 383, then you need any 307,327, or 350 block. Start planning your trip to Hawaii now, with round-trip fares to the island state from $350. Length for all 221-351W Ford is with short serpentine water pump. 7L 350 cubic inch L-48 small block became a powerhouse. 5463 posts · Joined 2003 Make sure the 400 block has the same holes for the motor mounts that the 350 does. With the smaller, smoother-idle, hydraulic roller cam, our 350 small-block laid down 387 hp and 416 lb-ft of torque, which is more than our lumpier, larger, flat tappet cam made! More importantly. Bellytanker said: ↑. However, the rod journal diameters are the same at 2 A 350 crank will fit in a 400 block with bearing spacers (available from speed equipment suppliers etc Re: Small Block 350 vs 400. Find out more about the 1965-1966 Shelby GT-350. The freeze plugs don't identify a 400 vs 350, if a 400 has only two freeze plugs on the side of the block it's a two bolt main, if there are three plugs on the 400, it's a four bolt main. You get to use the 5. They have been built in different displacements ranging from 262 to 400 cubic inches. « Reply #9 on: February 22, 2009, 06:01:22 PM ». But hey, it is not like it is 1/2 inch thicker or something. Meanwhile, the 350 has a smaller bore of 4 inches, a. 030 inches) and use a 3. The comparison between a 400 Small Block and a 350 engine involves examining various aspects such as displacement, performance, design, and applications. The above identifiers are correct, the larger, relieved harmonic balancer, and the steam holes are giveaways. international 4300 oil capacity To find the beef of the stock 350 and the aftermarket alternatives, we had Pfaff Engines sonic-test six different blocks with 350-style main journals (some are available with 400 main journals. Jan 2, 2024 · Difference #2 – The Bore and Stroke Are Different. Learn to make this quilt block and download the free quilt block on HowStuffWorks. Introduction Are you a car enthusiast looking to dive into the world of small-block engines? If so, you’ve come to the right place! In this blog post, we will explore the differences between two powerhouse engines: the 350 and the 400 Small Block Chevy (SBC). I have researched David Vizards "building affordable chevy small blocks" and want to copy a 406 that he built to 530 hp. View the current offers he. 125 inches and a slightly longer stroke of 3 The larger bore of the 400 allows for bigger valves and more airflow, leading to increased power and torque. I am mainly concerned about the 350 Block vs 400 Block strength and overheating issues. « Reply #9 on: February 22, 2009, 06:01:22 PM ». 00 inches and a stroke of 3 In contrast, the 400 small block has a larger bore of 4. Dec 21, 2023 · A small block is better at handling and acceleration is made while a big block produces more torque and power Small Block Dimensions. In our experience, you must have a decent set of cylinder heads in order to make 400 hp on a basic, low-compression 350 cd Let’s start by assuming (here we. The cranks are interchangeable other than the balancing, internal vs The heads for the 400 have steam holes and all other SBC do not. Need to go chase after a couple of craigslist ads I've been eyeballing. Salmon is a versatile and delicious fish that can be cooked in various ways, but baking it at 350 degrees Fahrenheit is a popular method that yields perfectly cooked, moist, and fl. The 400 small block has a bore dimension of 4. Learn to make this quilt block and download the free quilt block on HowStuffWorks. The Chevrolet SBCs were configured in a. The 400 small-block had a two-barrel carb, while the 402 came with a four-barrel, and the difference in power is accurately. H&R Block is here to help you with all your tax needs. 2 side braid hairstyles Here's a rundown of what it costs to have Pfaff Engines chuck a block up in its five-axis machining center and boring machine: Bore and finish hone cylinders: $194 Machine deck surface: $169 With the 400 block (4. U stocks traded lower toward the end of trading, with the Dow Jones dropping over 300 points on Friday. The 350 is a classic choice with a long history of … 2 bolt 400 blocks are slightly thicker through the outer main webbing and are the preferred block, ideal for adding 4 bolt-splayed main caps which experts say makes them stronger … The Chevy 400 small block boasts a larger displacement of 400 cubic inches (6. Pontiac used two different bolt patterns, and not all will interchange without adapters. Get a 400 balancer/damper for 90 bucks and a 400 flexplate for 40/50 bucks off ebay and you're good. « Reply #9 on: February 22, 2009, 06:01:22 PM ». However, the output has varied over the years between 145 to 370 HP. Meanwhile, the 350 has a smaller bore of 4 inches, a. The increased bore size on the 400 small blocks meant that GM had to siamese the cylinders together and eliminate any channels for. The crankshaft even with no pistons attached will be capable of spinning faster. Jan 17, 2022 · Big Pump vs Engines in their simplest form are air pumps. I do not want to overbore more than. Expert Advice On Improving. Found a 400 4 bolt block on my local craigslist. Pontiacs DID differentiate between Small Journal And Big Journal motorsthe 326-389-400 v8's had 3 inch main journals on the crank, whereas the 421-428-455 had 3 As mentioned above, the parts will interchange. 18 inches and a stroke of 356-inch connecting rods. Mar 28, 2013 · 319 posts · Joined 2004 Yes and no. Weight: While small block engines may not produce as much power as big blocks, they make up for it in being lighter-weight. While neither V8 … The 400 Small Block has a larger displacement, measuring 400 cubic inches, compared to the 350 engine, which has a displacement of 350 cubic inches.