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Difference between 350 and 454 engine. I'm really curious to find out if it's a 427 or a 454.

  • Difference between 350 and 454 engine. 7L engine with about 3. Both will work but I have found that using 350 mounts on the 454 will cause the fan to rub the bottom of the fan shroud. The torque differentials are striking, with the 350 small block reaching 350 lb. The big blocks ran from a 396 version all the way up to the 454. Sounds odd to me :thumbup: Jan 8, 2021 · Upgraded Vortec cylinder heads, a more aggressive camshaft, and reprogramming TBI chip to make 300 horsepower or more with a GM Chevy 305, 350, and 454 engine with factory TBI injection. Among the small block engines, the Chevy 350 engine is considered to be one of the best engines of the 20th century. Now a 396 may displace less than a 400 but put them side by side and you will NOT mistake one for the other. 0 mm × 101. On the other hand, the 350 Chevy is a small block engine that produces 300 horsepower at 6000 rpm. Does anyone have part numbers for the mounts and clamshells I need? May 14, 2020 · They wanted to keep the power rating down in Chevelle (so they just rated what power was at a lower rpm). 000 vs 4. 454. All variances (in parentheses) are from the iron small block. This means the two types of engines are not exactly interchangeable. The Chevy 502 vs. The 454 vs 502 have many distinct specifications that make them unique. Now a 350 small block is a good friend of mine and we go way back, but this is my first meeting with Mr 454. Oct 4, 2024 · The main difference between Chevy 454 and 350 engines is that Chevy 454 is a big block engine that produces 425 horsepower at 5000 rpm. 350 vs. 3. 03. Also new in 1980 was a 350-cid Olds-built diesel. Regardless, you should always send your rotating assembly out to a properly equipped machine shop to have the final balance done. Going real high performance - 454 or larger is the way to go. People say the 454 is too powerful for a younger person, yet im reasonable sure i could handle it. Read on to learn about this engine, its specs, features, and more. Feb 2, 2008 · if you have a bare block, and need to buy the other stuff, as said i would go the 489 route(. 305 and 396 will have smaller dampners then 350 and 454. Jan 29, 2016 · So, for that 355 engine, the 616-cfm rating translates to 493 real-world cfm on a stock combination; 524 cfm on a mildly built engine; and 585 cfm on a high-compression, high-performance combination. Apr 20, 2008 · If you want a 350 or a 383, build one from a 350 and sell the 327. When you consider that a small block Chevy comes in at 530-650 pounds in factory optioned form, the difference is only 70-100 pounds. the small-block – and vice versa. 75) and more bore (4. 6 mm), producing 290 hp (216 kW) at 4000 rpm and 410 lb⋅ft (556 N⋅m) at 3200 rpm. And that’s the point of another group of people who prefer the 350 to the 327 engine. Aug 20, 2011 · My biggest concern is motor mounting points and exhaust risers lining up with existing points at Y pipe. for example, former editor Evan Perkins installed a top-end kit on a tired 454 from a resulting in 250 to 350 hp Nov 28, 2006 · The Chevy engines (and back then they still used a few Ford engines) were palletized and arrived in railroad boxcars. When I pop off the bellhousing after removing the engine I can look at the flywheel to determine if its a 427 or 454 by the counterweight cast intot the flyweel if it's a 454. While the majority of big-blocks displaced 454 inches, Chevy did build a production engine displacing 496ci. Jan 18, 2014 · History. 7 liters, which is smaller than the 454 big block engine. Ed Jan 11, 2023 · All Mark IV engines 1990 and older are internally balanced except for the 454 engines; 454 engines require an externally balanced 454 flexplate; All Gen V and VI big block engines 1991 and newer are externally balanced; The Mark IV 454 flexplate has a different counterweight and crankshaft bolt pattern and is not compatible with the Gen V and Sep 23, 2012 · General Boating Discussion - 350 mercruiser stock switching to 454 - Im looking to put a 454 Chevy in my boat and it now has a 350 mercruiser with alpha 1 what all do I need to change and anyone know what the 350 and out drive is worth it has 390 hours and a stainless 3 blade prop o and it sits in a 89wellcraft nova xl Jan 18, 2006 · just wanting to know if there is a difference in the small block chev 350 bell housing's and the big block 454 bell housings my step dad said he had an elcamino once and it had a 454 in it, and he said his buddy just threw in a 350 and they had the same bolt patterns. I later bought the 454 and test fit the 454 using these small block mounts. If they are apart, check the bores. Jul 5, 2011 · The Chevy small blocks generally ran from the early 265 cid all the way up to the 400 cid engine. May 25, 2024 · 1. A narrow LSA is one that is considered 110 degrees or less result in more overlap between the intake and exhaust valve opening and closing events, promoting higher engine performance but potentially compromising idle quality and low-speed Sep 13, 2023 · what is the Difference between 348 CID Chevy engine and 454 CID Chevy engine? Many. This engine family was updated in 1968 for the use of 2. 030" makes a 383. 3-liter V8 was built by Oldsmobile. 350, the SBC 400 stroker did not come out as the winner. They just looked like your basic Chevy crate engines. So I opted for a 383 stroker kit. 060, saves for another overbore if needed) since you have a 4 sp, the extra torq. Mar 7, 2016 · Before Chevrolet introduced their LS engine in the 1997 Corvette, the debate about power with Chevy guys revolved around the virtues of the big-block vs. Get Ad-Free Access: Just $39/year Jun 7, 2023 · I ran across this comparison of engine weights - complete engines less bellhousing, flywheel, and clutch. Mar 1, 2009 · I saw the 350 vs 454 gas mileage thread, but does the 454 hold up as well, and as long as the 350? Intake gaskets, diff seals/gaskets, and other exterior engine Sep 1, 2022 · 02. Small block, cast iron - 520 pounds Jan 31, 2018 · It was the 301-, 305-, 350-, 400- and 403-cid V8s for the next several years, but in 1980 all engines over 350 cubic inches were dropped and a new 265-cid V8 was optional in Firebird, LeMans, Grand Prix, Catalina and Bonneville models. Mar 3, 2021 · The 454 cubic-inch LS4 would serve as one of General Motors’ final big-block powerplants for the Corvette. . smaller bore and stroke than 454. in a 1957 Lincoln Premiere. It has a displacement of 5. Offering between 310 and 400hp, and pushing out a spectacular 500 lb-ft of torque, the 455 big block was most famously used in the 442 muscle car. Aug 27, 2011 · If we were to compare 2 similar chevelles, one with a 350 sbc and the other with a 454 bbc. Chevy 400 and 454 are often externally balanced. On the Jan 2, 2020 · You'll have to get the Throttle Body for a 454 since it's 50mm bore while the 350 is 42mm. Mar 18, 2022 · The 454 Chevrolet is the better engine because it produces more power, has more torque, and can be used in off-road vehicles as well as cars. Posted from my CB using ch. g. Other engine options available for the Malibu were two 350 cubic inch V-8s producing either 245 or 270 horsepower. And, the stroke of a 350. If I use 350 motor mounts and clamshells, will there be clearance issues or will my fan hit the radiator shroud? 4. If you want to turn those tires, the BB can do it without any effort. Oct 13, 2022 · In 1975, the highest output Chevy 350 engine was the LM1 at a measly 155 hp. The 454 tilted WAYYY back towards the firewall due to the thick rubber pad on the engine mount. Is there a difference between the 454 and 350 clamshells? 3. Vortec engines seem to need major repairs over their predecessors, but is that a Jul 15, 2021 · In 1968 Oldsmobile debuted the Rocket 455, an engine that was part of a family of 3 (with 400 and 425 cubic inch engines sharing a similar architecture). Use all of the parts from the 454 truck in the K10. Moreover, the 327 engine has a 368 lb-ft of torque. Will a distributor out of a 1997 Chevy 350 engine Jan 2, 2005 · I bought a set of sbc engine mounts when I was planning on using the 350. I have build and driven many 383 and 454 (up to 467's) and having them comparibly built, their is nothing quite like a BB. MAKE SURE you don't use the 350 flywheel on the 454. I've never owned a 454 before, and am really in the dark on this engine. May 4, 2023 · The 454 engine is also known as the Mark IV or Mark IV Rat Motor. So there were a lot of difference between the 350 and 375 horse motor than the 25 hp. The Chevy 350 is a small block engine that was introduced in 1972. 348 would be a small block, whereas the 454 is a big block. The current engine is a new, stock crate 454. How Much Does A Bbc Engine Block Weight? The weight of a BBC engine block ranges between 650 to 750 pounds. would allow you to keep good power, run a milder street (and 4sp)friendly cam, keep the rear ratio street friendly, really make an enjoyable ride Apr 6, 2023 · For example, the small-block Chevy includes engines like the 283, 305, 327, and 350, while the big-block Chevy includes engines like the 396, 427, and 454. Under the hood, the standard engine was now the 145 horsepower 250 cubic inch six cylinder or the 200 horsepower 307 cubic inch V-8. Small block engines are powerful as they deliver better handling and acceleration. 48 vs. Jun 21, 2023 · When it comes to the battle of 454 vs 350 engines, both are classic engines from Chevrolet and are great for high power production that is a great fit in so many classic cars and trucks. Marine Engines Are Heavy Duty. in it, but never got it running. Q: Is 454 a big block or a small block? Chevrolet Jul 25, 2007 · chevy made 400's with more stroke (3. 4 liters. The engine’s horsepower is between 145, and 370 depending on the year, make, and model. Dec 21, 2023 · 350 Small Block Vs. 348 Mar 9, 2017 · Use the motor mounts that come with the 454. the main difference between a small-block and a big-block is size. It has been sitting so long that the tired old LT1 would have to come out for repairs. The cost of the 383 parts / kits are a few hundred more, but you get a little more power and torque then you would with a 350. Save Share Aug 24, 2020 · Lucore Auto and Lucore Racing brings you Big Block Wars featuring iron-headed (mostly) big-block engines from Chevrolet, Pontiac, Oldsmobile, and Mopar — all with similar street setups throwing down on the dyno to see what’s what! Chevrolet 454 LS6 Big Block Engine. Apr 30, 2015 · This can be added at the harmonic damper and/or flywheel. If you want a bigger engine, just sell it for what you can get and build a 383 or better yet, buy a ready to run crate engine. Both I think had the same 415 tq rating but the 375 horse was a little higher in rpm. May 10, 2016 · This engine was offered displacing 396-ci, 427-ci and 454-ci during the late ‘60s and early ‘70s, and went through several iterations incorporating improvements and new technology. The 402 cubic inch motor (now known as the 400) produced 300 horsepower. This is comparison of nominal weights - a L78 vs a LS6 vs a L88 are going to have some minimal weight differences. The engine had a bore and stroke of 4 + 1 ⁄ 4 in × 4 in (108. The engine had MPFI (multi-port fuel injection), which gave slightly more power and better fuel economy, and two valves per cylinder. Pontiac’s engine program took a different route however as they do not have a small- and big- block, but one engine architecture. And it was not that long time ago when the 350 engines had some serious street cred. Just wanting to know the truth on this. 17 little cids away from a 400. The Chevy 502 engines have a displacement of Feb 16, 2012 · A near stock, slightly modified 396 is just a sweet engine to drive. The LT1 “fits,” but the engine compartment looks very crowded. How Heavy Is A Chevy 350 Engine? The Chevy 350 That’s not a common requirement on car engines, though, which are meant for dry environments. How much different in stats, and performance is the 454 vs the 396?(like 1/4 mile times ect. 48 and 4. It’s a battle that will likely never draw a conclusion, but opinions do vary. 125). Mar 4, 2008 · Here is the story - I'm looking to buy an older pickup for general hauling (home depot, yards stuff, lumber, etc) and I've found one thats reasonable but its a 454. Think DZ vs L78 vs L89 vs ZL1. 454 engines belonged to the family of big-block engines and were developed by Chevrolet, a family of General Motor Company (GM). This 4. Sep 26, 2001 · C3 Tech/Performance - blown 350 vs 454 - Given the choose between the two, which would you rather have in your c3 and why? I figure it would cost roughly the same to convert my 350 4bolt truck engine to blown 350 as it would to go get a junkyard 454 and rebuild it to the hilt. A car engine typically only uses a portion of its horsepower to maintain a decent speed on the road. The 350 provides more torque if you compare it with the 327. Almost no used engine is going to bring a whole lot of money unless it is really something special. L29 applications: Jan 22, 2023 · How to tell the difference between Chevy big-block engines by generation. , the casting number 3970010 was used by all three engines: 302, 327, and 350). -ft at 2800 RPM, while the 454 achieves a formidable The Oldsmobile engine was very similar to the Buick engine, but not identical: it had larger wedge combustion chambers with flat-topped (rather than domed) pistons, six bolts rather than five per cylinder head, and slightly larger intake valves; the valves were actuated by shaft-mounted rocker arms like the Buick and Pontiac versions, but the Jun 10, 2024 · This affects engine idle quality, engine vacuum levels, throttle response, and overall performance. Small-block engines like the Chevy 327 and 454 big-blocks are iconic and have reached legendary status. 396 has the same stroke as a 427. What about Alpha 1 ratios? Are there great enough differences in engine speeds to warrant changes in uppercase gearing? May 6, 2009 · The engine is now in my 70 and very soon I'll be removing it. Displacement. Jul 19, 2016 · The point of this thread is the personal experience with the 454’s or the 350 vortec. All engines in this family share the same block dimensions and sometimes even the same casting number; the latter meaning engines were of the same block, but with different strokes (e. Jump to Latest (3 year warranty unlimited miles) and build it up, or i had an option to get on a 454 used engine. I would rather the 454, but I could drift either way. I did a 350 as my first. The 454 is better in terms of horsepower, but the 350 provides superior fuel economy and is considered the better engine overall. 030 over bore instead of . Thanks for any comments. I would prefer a Buick 455 engine in this car, but wonder how it might compare weight-wise and general performance-wise to this present 454. Jul 20, 2005 · Iis actually a h-d 427/454 starter b/c it has an about 3/4" to 7/8" long copper spacer between the field coil end and the back of the solenoid. The injectors for 88-90 7. ) Apr 28, 2021 · 1112526: 454 cubic inch, 270hp 1112150: 350 cubic inch, 250hp 1112247: 350 cubic inch, 195hp 1112544: 350 cubic inch, 195hp manual, california emissions 1112850: 350 cubic inch, 195hp manual, california emissions 1112851: 350 cubic inch, 195hp automatic, california: alternator number: 1100544: 350, 454 cubic inch, air conditioning 1100950: 350 Aug 12, 2010 · If the motor is in one piece, look at the dampner. When you think big block Chevy you think heavy, right? That’s a big cast iron lump sitting on the frame rails at roughly 600 to 750 pounds. Engine Specs. 454 is correct for a 70. 454 Big Block. Jan 10, 2013 · I want to install a Ford 5. The LT-1 is one of the finest Chevy 350 engines they ever created, and the ZQ3 and L82s are both solid V8s. I’m interested in replacing my ECSB 350 TBI Z71 because my stepson is taking it over with a CCLB 4x4 of the same platform. Apr 3, 2024 · When it comes to the best years for the Chevy 350 V8, three motors, in particular, stand out: the 1970 LT-1, the 1992 L98, and the 2002 L31. Apr 12, 2010 · The 350 is a good start for a first engine. It's now on my 496!! pdq67 PS. Oct 25, 2023 · 454 Weight vs 350. Building on the popularity of its 427-cubic-inch engine, General Motors introduced the 454 in 1970—one year before emissions standards were tightened and just three years before the gas crisis hit with full force. 0 modular engine with a Ford 6R80 A. 45 in (62. 19. If you want a faster one, still at a budget cost, the same mods to a 454 is still sweet, but faster. 2 mm) medium Dec 8, 2023 · How Much More Does A 454 Weigh Than A 350? The 454 engine weighs about 100 pounds more than the 350 engine. We will consider the following specifications. The truck is a 76 GMC and has 150k miles on its original all stock 454. Their names indicate their displacement values. John Jul 11, 2007 · 350 vs. 400 blocks are made with connected cylinder walls (Siamesed) to allow a bigger bore. The Chevy 350 small block V8 engine is a 350 cubic inch 5. Someone installed a 1996 LT1 Chevrolet engine & GM 4L60 A. Aug 26, 2004 · Im trying to decide on what chevelle to get. Everything else should be obvious. However, a 400 crank in a 350 bored 0. According to Eagle Specialties, Chevy 305 and 350 engines are typically internally balanced applications. Oct 15, 2021 · The major difference between 454 and 350 Chevy Engine is that 350 Chevy vehicles are more affordable to build than big blocks, light, and probably set up for small blocks already. I know the 454 is a big block (thus wider at heads) so I am imagining exhaust system will be an immediate issue. Mar 14, 2024 · While the 50 hp increase over the old 454 is nice, the new engine also delivers more power at lower rpm, making it an excellent choice for towing heavily loaded trailers. The 396 is all by its self. Like many older engines, the 1970 LT-1 is prized, in Jan 25, 2006 · I'm looking at a 1959 Buick that has been resto-rodded. Im looking at either the 1970 SS 454 or the 1970 SS 396. Torque is undoubtedly another key fact to consider when choosing a car engine. To some, the Chevrolet 454 big block was the right engine at the wrong time. ” The small block engines are generally more fuel-efficient and easier to work on, making them a popular choice for street cars and daily drivers. Aug 7, 2020 · General Question, between a V8 350 and a V8 454, which engine will do better in towing with both engines in a One Ton Dually Chevy, Two Wheel Drive? Along with TH400. Really, the only small block Chevy 350 engines capable of any performance were the LT-1, ZQ3, and L82s. First, they have a classic 454 LS6 Big Block Chevy engine. T. Plus the 400's are externally balanced (weights on flywheel and balancer). 427 has the same bore as a 454. While the 350 small block garners praise for its versatility, it pales in comparison to the sheer power unleashed by the 454 big block engine, especially in hauling scenarios. Chevy 350 Engine. Oct 19, 2022 · The 350 Engine Provides More Torque than the 327 Engine. I'm really curious to find out if it's a 427 or a 454. The Chevy 454 uses a typical old-school V8 design like you’d find on small block engines like the Chevy 350 or Chevy 305. 4L are 80PPH, and 91-93 are 74PPH, while 94-95 are 46PPH @ 13PSI but they were run @ 26-32PSI for 67-72PPH. As the name suggests, the Chevy 454 big block V8 delivers a 454 cid displacement – or 7. 00 stroke and bore, respectively. It was Chevrolet’s second big block production motor following the Mark I W-series from the late 50’s to mid-60’s. Both engines would have a mild performance build, at a modest expense, like 750 to 850 dp carbs, aluminum double plain intakes, Iron heads, like vortec on the sbs and oval ports on the bbc, headers, moderate performance cams, around 9 1/2 to 1 compression, auto trannys, similar rear gears. , and I had the guy pull up three different starter boxes that we opened before we found it after I toasted my original 350's regular starter!! (Had ta match the snout!!!). I later found the 350 long block I bought had a bad "spun" bearing which meant the crankshaft was garbage. This weight accounts for the complete big block Chevy, including aluminum heads. Super Sport Package Nov 16, 2005 · The difference between the two is very noticable, the 454 will always have more low end. Is there a difference between the 454 and 350 motor mounts other than the bolt hole locations? 2. It depends on just how far into the BBC addiction process you are at this time. Jun 10, 2021 · Chevy 454 Engine Specs. They had V6, 305, 350, 454, and an unknown engine at that time-----502! Never knew such and engine existed! Today they are very common. Best of my memory, 305 has the same bore as a 283. Even in a debate of Chevy 400 vs. But the future of the Rat appears to be stroker versions and today you could easily build a stock deck height Rat motor at 500-plus-ci using off-the-shelf parts. Though things like compression, fuel injection, and emissions systems have changed over the years, the basic 454 construction remains identical to the day it first came from Chevy. vavntse yzqt sxzjkkao hxrs zxoks zttyk wkivk lxz biuest cvsvyk