Chevy 409 Bore And Stroke348/409 engine specifications. As new castings are released on late models, keep your eyes open for the new numbers. Both actuated by a mechanical camshaft that fed air and. While the factory LQ4 comes through with a generous displacement of 366 ci via the stock 4. 135" rod) 1963 "Z11" SHP drag race. 1L as a completely different engine and not in the same lineage as the rest of the big-block lineup. Compression is based on stock heads and a 9. W engines, much like their small- and big-block cousins, have no skirts on the side of the block at the crank- shaft location. The 409 The 409 was introduced at the end of 1961. The 409 The 409 was introduced at the end of 1961. When determining the size of an engine, you need to know the number of cylinders, the bore, and the stroke. Chevy needed an engine that could not only haul around the heavier cars that were on the horizon but. 558 inches of lift and 325 degrees duration on the intake. Also available as an extra cost option in Series 60 and 60-H models. 560-inch cylinder bore and utilizing a standard big-block Chevy crankshaft with up to 4. 5-inch total) and another 3/16-inch in the bore for 4. Feb 1, 1999 · Although finding parts for an engine that ended production in 1965 might seem like a chore, in reality the 348/409 is a transitional engine that shares design. 125" rod) 409 = 4. 400 Cleveland On the other side of the spectrum, we have Ford’s Cleveland engine family. 9 8 Skip to main content Free Shipping over $199. Cheers!!! Reply Save Like redsdad. 48-inch stroke and its 5. The formula for finding the size is D = (π/4)B²SN. 50 bore and stroke, the 427 was stretched to 4. 125 inches while a 409 has a bigger bore of 4. 1 Firing Order: 18436572 1967 - 1970 with 4 Barrel Carb (High Performance Model) Max Brake Horsepower: 375 @ 4600 rpm Max Torque: 480 @ 3200 rpm Stroke: 3. This Magnum XL crank from Callies is offered in a 3. 76 stroke you have 409ci. The diminutive 4. The 409-cu-in big-block was born with an additional 1/4-inch of stroke (3. So if you bore your 348. 0:1 Brake Horsepower, Advertised: 425 @ 5,600 rpm (450hp rating in early 1966 Corvettes) Maximum Torque: 460 lb-ft @4,000 rpm Valve Lifters: Solid Carburetor: Single 4BBL Holley Cylinder Block Material: Cast Iron Cylinder Head Material: Cast Iron Crankshaft: Steel Forging. Chevrolet faced a challenge to increase displacement 18-ci to create a 427 W engine. This engine was superseded by the 409 cu in (6. This is only slightly bigger than the small-block’s 4. 5 STAR RATED BY CUSTOMERS, SINCE 1979: Ross is one of the most trusted names in forged pistons for Chevy Big Block applications. 25: stroke displaces 348 cu. This calculator determines the displacement of the engine by two methods; selecting the engine to get the geometry of the configuration, or by the geometry to get the engine. What a lot of folks outside the 348/409 community don’t know, is Chevy did it again when it made it’s drag racing 409 into 427 cubic inches. It still had the 409 bore but made the 427 mark with a longer 3. To accommodate the desired compression height, the factory 400 engine's rod/stroke ratio shrank to a compromising 1. 1875 inches in the cylinder bore. Features four barrel carburetion and heavy duty components for top performance. Due to the late introduction, there were. 155" with a 327 stroke and it displaces 353 cu. Although only separated by seven years, the big-block Chevy's granddaddy is the W-series engine. So, for the Z11, Chevrolet used that same 4. This engine was superseded by the 409 cu in (6. 5:1 compression ratio, resulting in 250 to 350 hp, depending on the year and performance package. 409 stock bore size is 4. The 348 was the first big-block engine Chevrolet introduced, and was soon followed, with additional bore and stroke (4. 5 STAR RATED BY CUSTOMERS, SINCE 1979: Ross is one of the most trusted names in forged pistons for Chevy Big Block applications. One Engine Masters challenger builds an affordable 587hp 409-cube LQ4 stroker for the everyman. The design of the Merlin 409 block offers Chevy-based. 50 inches, yielding exactly 408. 312-inch bore and could not physically go much larger, any additional cubic inches had to come from increasing the stroke. A 4oo block with a 3" stroke displaces 321 cu. 25 Firing Order: 18436572 1962 with 4 Barrel Carb Max Brake Horsepower: 380 @ 5800 rpm Max Torque: 420 @ 3200 rpm Stroke: 3. 250 inch stroke made the 307 a clear winner. com/forum/threads/how-to-build-a-348. The strange shape of the cylinder heads and. 000 Stroke – N/ACC – #83572 Details Chevrolet Big Block: 409 (10. 040 for a total bore of 4. *Note 2: Powerful extra cost engine for Series 80 is built for big payload hauling on the toughest runs. 250 inches of stroke. by '61 and debuted in the first-year Impala Super Sport. 25 inch more bore, and RPO 580, the. The 348 was the first big-block engine Chevrolet introduced, and was soon followed, with additional bore and stroke (4. Unfortunately for interchange artists, GM changed nearly everything in the engine so parts compatibility ended with this 8. Both actuated by a mechanical. Here is the very piston we're talking about: 348,. main and rod journal diameters. two combinations were not listed. 50") Crankshaft strength is not compromised Really? Then why did Chevrolet increase the journal size at all? If you mean "probably not going to break at the smaller size", say so.  · Yes Dan, the 366/396/427 car/truck forged steel crankshaft 3. Sound intriguing? Let's take a closer. 15-inch longer stroke and detail improvements. Due to the late introduction, there were just 142 Impala SS 409. 25 inch more bore, and RPO 580, the 360hp, single four-barrel 409 was born. 50-inch stroke, the combo ended up as 421 cubic inches. Bore x stroke: 4. Chevrolet did just that and added. Was the Chevy 409 a good engine?. 312-inch bore but increased the stroke to 3. Its big brother, the 409, came with the stock bore size of 4. Together, the new bore and stroke gained those 61 cubic inches. Check out this Edelbrock 409 Chevy engine as it undergoes heavy modifications. Jan 22, 2023 · 348ci: It features a 4.  · Bumps up displacement to 482ci, and the engine really likes it. 3125 inch bore versus the 348's 4. While historically significant, the engine is largely obsolete in the modern world, thanks to its goofy combustion chamber design. Eagle makes a new stroker kit for the 348 that bumps displacement to 434 (at. Eagle makes a new stroker kit for the 348 that bumps displacement to 434 (at. Special cylinder heads featured angled valves and a new intake manifold held a pair of Carter AFB 4-barrel. Mfgr CID Liters # Cyl Bore Stroke Mfgr CID Liters # Cyl Bore Stroke Amc 304 5 8 3. Apr 11, 2023 · Here are the specifications Chev- rolet used to change from 348 to 409: A stock 348 has a bore of 4. Crankshaft Stroke: 3. Engine Specifications 1961 with 4 Barrel Carb Max Brake Horsepower: 360 @ 5800 rpm Max Torque: 409 @ 3600 rpm Stroke: 3. (In comparison, the Mark IV 427 production engine employed a different bore/stroke combo, 4. 25:1 compression, high-lift hydraulic camshafts, and a high-rise. It features 4. 1875 inch of stroke and 0. 6-inch stroke for big-inch engines. Chevrolet faced a challenge to increase displacement 18-ci to create a 427 W engine. 184 people found this article helpful what about you? two combinations were not listed. 348-409 "W" Engine bore and stroke 348 = 4. The 348 was the first big-block engine Chevrolet introduced, and was soon followed, with additional bore and stroke (4. 760 inches Advertised Compression Ratio: 11. 366, 396, or 427 BBC crank is 3. A stock 350 Chevy's 3. 25-inch bore and stroke with a 9. 558 inches of lift and 325 degrees duration on the intake and the exhaust, while the heads had large, raised, oval intake ports and enlarged exhaust ports. 62-inch bore and stroke, one of the appeals of these engines is how readily they take to added. What a lot of folks outside the 348/409 community don't know, is Chevy did it again when it made it's drag racing 409 into 427 cubic inches. Apr 11, 2023 · World’s aluminum block is capable of a 4. Bore and stroke was 4 + 1 ⁄ 8 in × 3 + 1 ⁄ 4 in (104. Jan 9, 2009 · Stock Chevy rocker studs are failure-prone press-fit (pinned on 409 heads); Performer RPM 409 heads use upgraded 7/16 screw-in studs to end valvetrain problems. Max Torque: 409 @ 3600 rpm Stroke: 3. The other half was the stroke change from 348s to 409s that went from 3. 500-inch domed 409 pistons measuring 69. In 1966 it had four bolt mains, but switched two-bolts from 1967-on. 7 L) as Chevrolet's top performing engine in 1961 and went out of production for cars at the end of that year. The 307 has the bore advantage over the more popular 305/5. By 1961, marketplace horsepower demands had outgrown even the 348, so Chevrolet added 0. The bore remained at 4. 060 overbore) cranked out 466 hp and 461. Feb 21, 2017 · The big news for Chevy performance enthusiasts arrived midway through the 1961 model year with the introduction of the mighty 409 CID V8. We are currently limiting the listings to Chevy V-8 blocks, cranks and heads. 5:1 compression yielded an understated 430 hp and 435 ft-lbs of torque. Raising displacement from 348 to 409 pretty much maxed out the bore at 4. Bore and stroke was 4 + 1 ⁄ 8 in × 3 + 1 ⁄ 4 in (104. The new bore and stroke. One half of the move from 348 to 409 was an. Bore and stroke was 41⁄8 in × 31⁄4 in (104. Dec 1, 2010 · Based on the existing 409 V8, the motor had a reduced bore diameter and increased stroke. L34: Chevy produced the L34 from 1966-1969, and it made 350-360 horsepower. The bore spacing for both the 348 and 409 is 4. It still had the 409 bore but made the 427 mark with a longer 3. It was produced through 1964 for use in large Chevrolet trucks. Feb 4, 2015 · The bore and stroke are 4. Ring grooves are 5/64 5/64 3/16. May 7, 2014 · The 409 was introduced in 1961, and it was an evolution of the 348 design, utilizing a larger bore and a longer stroke. Aug 20, 2021 · The 409 cubic inch W-Series had thicker block walls and featured a larger 4. The 348 crankshaft was also 12 pounds heavier. 427ci: The rare RPO Z11 427ci is a version of the 409, with the stroke increased by 0. The main and rod journal diameters and other features are the same as the 348, but the 409 crankshaft will not fit in a stock 348 block due to its larger counterweights. 3125 inches and a stroke of 3. While a standard 409 used a 4. Chevrolet produced two different 427 CID racing engines for 1963, and this one, the Z11, was essentially an enlarged, enhanced version of the famed 409 CID V8, with a. Don't forget to follow us on Facebook, and if you run a. Apr 11, 2023 · Chevrolet faced a challenge to increase displacement 18-ci to create a 427 W engine. 125 inches while a 409 has a bigger bore of 4. Chevrolet's 348/409 engines were good performers and they were dependable engines. 125 inches and a 409 has the bigger bore of 4. 250 but the stroke increased from 4. Its cylinder bore size was 1/4-inch larger (4-1/8 versus 3-7/8) than a 283 and its stroke was 1/4-inch longer (3-1/4 versus 3. Ross Chevrolet 409 Pistons Chevy Stroker 409 Pistons. 061 = cubic inches The five largest Bonneville Salt Flats engine classes BBC Engine block casting numbers BBC oval port cylinder head casting numbers. They used a 454 crank to stroke the 409. Thanks! We appreciate the support and encouragement we have received from our visitors around the world for the past 20 years. One half of the move from 348 to 409 was an. Because the W was basically capped at that 4. With its single four-barrel carb, the engine was rated at 360 hp. I did find a complete minus fuel pump 1960 348 out of a 4-door hdt. Dec 28, 2017 · Details Chevrolet Big Block: 409 (10. Engine Specifications 1961 with 4 Barrel Carb Max Brake Horsepower: 360 @ 5800 rpm Max Torque: 409 @ 3600 rpm Stroke: 3. Apr 11, 2023 · Here are the specifications Chev- rolet used to change from 348 to 409: A stock 348 has a bore of 4. 3125 inches and a stroke of 3. Jeff was positive more could be done with the 307. Apr 9, 2021 · The 409 featured a 4. Go with 4-bolt mains in the 348, but despite what you'll read in a lot of places, don't use splayed caps--the main oil galley is right there, and. 385" BBC aftermarket rod, full floating pin these have the "maximum weight removal" process done 688 grams. The 409-cu-in big-block was born with an additional 1/4-inch of stroke (3. 409ci: The 409 was introduced at 360 hp and phased out after reaching a 425-hp rating. Reciprocating component height: 1/2 stroke + rod length + piston compression height350ci component height: (3. The 427-cu-in masterpiece kept the 409’s bore but increased the stroke to 3. One Engine Masters challenger builds an affordable 587hp 409-cube LQ4 stroker for the everyman. Apr 7, 2015 · Starting with a 1964 truck 409 block and crankshaft, the motor’s six-quart oil pan, 0. D = displacement (CID), π (pie) = 3. Although it was first introduced in 1958 at 348 cubic inches, Chevy's "W" engine grew to 409 cu. 65 inches, identical to the Z11 V8, and the crankshafts are similar, sharing the same 2. The 348 was the first big-block engine Chevrolet introduced, and was soon followed, with additional bore and stroke (4. May 13, 2023 · The bore remained at 4. 0 Firing Order: 18436572 1962 with 2 x 4 Barrel Carbs Max Brake Horsepower: 409 @ 6000 rpm Max Torque: 420 @ 4000 rpm.  · May 30, 2008 · 348/409 Engine Specifications *Note 1: Big muscled standard. 31-inch bore and 3. GM eventually designed a new engine block for the 409 with thicker cylinder walls, warning that boring the 348 block led to cracks. You may then play with the various components until you get the information you desire. Raising displacement from 348 to 409 pretty much maxed out the bore at 4. Jul 27, 2017 · Its big brother, the 409, came with the stock bore size of 4. 65 inches from the 409’s 3. Big Block Engine; Engine Years Bore Diameter Stroke Rod Length Main Bearing Diameter Rod Bearing Diameter Main Caps Journal Size Notes; 366T: 1968-90: 3. 5-inch bore and stroke. 150 inch to the stock 409 stroke of 3. Its big brother, the 409, came with the stock bore size of 4. 5-inch bore and stroke. Starting with an iron block LQ4 plucked from nothing more exotic than a Chevy Suburban, the engine. 348/409 Engine Specifications *Note 1: Big muscled standard engine for Series 80. 31-inch bore and 3. With a bore of 4. Aug 1, 2012 · With a bore of 4. 50 inches for a net gain of a quarter inch. between the 348/409 but I can't remember what. 427ci: The rare RPO Z11 427ci is a version of the 409, with the stroke increased by 0. 060” overbore (final bore size of 4. The larger displacement was achieved with an increase in both bore and stroke to 4. 70-inch-long rods equals a tidy rod/stroke ratio of 1. 0:1 forged pistons, a 474ci street stroker makes about 500 hp and 500 lb-ft of torque. The aftermarket offers a variety of standard-stroke and Chevy big- block crankshafts that can be used for the 348 and, particularly, the 409. GM produced this engine from 1962 through 1969. That works out to an increased bore of. 250˝ more stroke for the 409 adding those 31 cubic inches. Chevrolet Big Block Bore and Stroke Other Chevy Big Block Info Chevrolet Big Block Engine Identification – Casting Numbers, Date & Engine Codes Chevrolet Big Block Heads – Casting Numbers and Specifications Big. Building a stroker motor 348, 409? The 409's seem to be much harder to find and chances are there is damage. The physically large pistons are attached to the connecting rods via a stout. 04 inches and confirms how Chevy wanted to be able to install a W engine in the footprint of the small-block. While a standard 409 used a 4. Oct 6, 2019 · 348-409 "W" Engine bore and stroke 348 = 4. The 409 truck engine is one of the most desired, '63 -'65. Backwards, 3/16" more bore (4. 4L small-block Chevy had a bore and stroke of 4-inch (102 mm) x 3. If it can be sleeved to 409 size bore then can it also be stroked out as well to reach the 470's-480 cubic inches? As the actual 409 blocks become more scarce and people want more cubes. 3125") and 1/4" more stroke (3. Or a set of Z-11 heads if you can find them for about 10 grand a piece. Big block Chevy bore and stroke To calculate the displacement of an eight-cylinder engine: bore x bore x stroke x 6. 1875 inch of stroke and 0. The aftermarket offers a variety of standard-stroke and Chevy big- block crankshafts that can be used for the 348 and, particularly, the 409. Its cylinder bore size was 1/4-inch larger (4-1/8 versus 3-7/8) than a 283 and its stroke was 1/4-inch longer (3-1/4 versus 3. 00 but told me he would take 700. While the factory LQ4 comes through with a generous displacement of 366 ci via the stock 4. 7 L) as Chevrolet's top performing engine in 1961 and went out of production for cars at the end of that year. 25 Firing Order: 18436572 1962 with 4 Barrel Carb Max Brake Horsepower: 380 @ 5800 rpm Max. By 1961, marketplace horsepower demands had outgrown even the 348, so Chevrolet added 0. Eagle, Scat, Callies, and others offer forged steel 348 and 409 crankshafts, so you don’t have to rely on an OEM crankshaft. 9 lb-ft with a stock stroke, conservative 9. Unfortunately for interchange artists, GM changed nearly everything in the engine so parts compatibility ended. 25 inch more bore, and RPO 580, the 360hp, single four-barrel 409 was born. Aug 1, 2012 · As good as the new engine was it did have some limitations on displacement and low-end torque. 348 blocks are a dime a dozen, while good 409 blocks start at $2000, and more for a passenger car block. 125 inches and a 409 has the bigger bore of 4. Aug 8, 2014 · One half of the move from 348 to 409 was an increase of. 9073/ Wow, that's all I have to do to make the 348 into a 409? Interesting. Go with 4-bolt mains in the 348, but despite what you'll read in a lot of places, don't. They used a 454 crank to stroke the 409. 1875 inch of stroke and 0. 5:1 compression ratio, and when fed by the dual-quad Carters on a new aluminum intake manifold stamped out 430 hp and 435 lb-ft of torque. 76" stroke, using a 6. But in stark contrast to the Methuselah-like life span of the Chevrolet small-block, While a standard 409 used a 4. May 31, 2022 · Ross Racing was tapped for the big 4. Engine Specifications 1961 with 4 Barrel Carb Max Brake Horsepower: 360 @ 5800 rpm Max Torque: 409 @ 3600 rpm Stroke: 3. So, for the Z11, Chevrolet used that. Feb 1, 2008 · By 1961, marketplace horsepower demands had outgrown even the 348, so Chevrolet added 0. 59-inch stroke resulted in a big-block at just under 400 cubic inches and approximately 160 hp, all while weighing a hefty 650 pounds—a pretty lopsided package indeed. 125 So if you bore your 348. That works out to an increased bore of. 348 blocks are a dime a dozen, while good 409 blocks start at $2000, and more for a passenger car block. A stock 348 has a bore of 4. 250 but the stroke increased from 4. It features brand new Edelbrock cylinder heads, JE forged pistons, and a lot of modern technology!. We are currently limiting the listings to Chevy V-8 blocks, cranks and heads. 500 inches) upping the displacement to 409 cubic inches in 1961. Backwards, 3/16" more bore (4. A new set of heads and intake and its 13. You may select the engine manufacturer and designation to get the exact parameters. The 409 featured a 4. Chevrolet made fewer than 50 of the Z11 engine for drag racing. two combinations were not listed. Both actuated by a mechanical camshaft that fed air and fuel to forged pistons that created more than 11:1 compression. The new rotating assembly managed to squeeze out a 13. 5 Compression, Open & Closed Chamber, Forced Induction & 454 High & Moderate Compression Pistons Available. It was available from 1961 to 1965. 5-inch bore and stroke. 3125˝ and stroke of 3. 24 Degree High Compression, Pro Mod 18 Degree Nitrous, 409 10. 14159, B=bore, S=stroke, and N=number of cylinders. Building a stroker motor 348, 409? The 409's seem to be much harder to find and chances are there is damage. With high-perf 409 heads, a relatively mild mechanical cam, and 10. Check out this Edelbrock 409 Chevy engine as it undergoes heavy modifications. Using the formula on page 103, the Z11 math looks like this:. The 427-cu-in masterpiece kept the 409’s bore but increased the stroke to 3. By 1961, marketplace horsepower demands had outgrown even the 348, so Chevrolet added 0. 6 mm), resulting in a substantially oversquare design. 50 bore and stroke, the 427 was stretched to 4. Engine Specifications 1966 - 1969 with 4 Barrel Carb (Standard Model) Max Brake Horsepower: 350 @ 4400 rpm Max Torque: 480 @ 2800 rpm Stroke: 3. The bore spacing for both the 348 and 409 is 4. 135" rod) 1963 "Z11" SHP drag race We appreciate the support and encouragement we have received from our visitors around the world for the past 20 years. 00 inches400ci component height: (3. 030" overbore for a bore of 4. The guy has had it advertised for a while and was asking 1000. So if you bore your 348. 5 inches it had a solid lifter cam, a single Carter AFB, and was rated at 360 hp. 366, 396, or 427 BBC crank is 3. But it's worse than the original 409. Hayden Proffitt's 409 Chevy win Stock eliminator at the 1962. Oct 14, 2022 · Chevy 396 and 402: Engine by Engine Chevy L34, L35, L37, and L66 Engines – 396 Big Blocks. Oct 6, 2019 · 348-409 "W" Engine bore and stroke 348 = 4. 875 inches over the 305’s smaller 3. Its power ranged from 250 hp to 375 hp depending on the fuel injection or choice of the carburetor, cylinder heads, pistons, camshaft, and intake manifold. 600" block height NOT RECOMMENDED FOR USE WITH FORCED INDUCTION SYSTEMS! Bore. So, What Can You Do with the 307?.