Best mpg ls engine. haven't changed driving style or anything else.

Best mpg ls engine I guess what we are looking for is it beneficial to swap this big ass motor out and loose money to go ls to save some gas millage and ability to drive to beach easily. Sacrificing low end will be the best way to do this. 3 days ago · – The LS1 engine, in particular, has won numerous awards, including the 1998 Ward’s 10 Best Engines award, highlighting its engineering excellence. From a modest 4. Jun 16, 2018 · I drive pretty aggressive, hit bumper to bumper traffic for ~30-45mins daily, and don't monitor or even care about the mpg to be honest. ATK High-Performance 5. In 1998, they showed up in the newly facelifted “catfish” Camaros and Pontiac Firebirds where they would stay through the end of fourth-gen production in 2002. 7 with the new E10 ethanol fuel I turn that to 14. Apr 20, 2024 · These engines are also known as the LS-series of engines. So, when choosing the best LS engine for your needs, research and select the one that best meets your needs. Efficiency Enhancement: Turbocharging can actually improve your engine's fuel efficiency by maximizing the combustion process. They will allow more air to enter into the engine, and are a must on any serious builds. 2001 Lincoln LS. Best I’ve ever heard of was a Volvo 240 that had a 5. Jan 5, 2024 · Same cam specs from your engine put into a LS engine with the same transmission, gearing and carb on top undoubtedly I believe would get better gas mileage. Feb 26, 2016 · Follow these suggestions from "easy" to "complicated" for ideas on how to improve your Camaro's or Firebird's fuel economy. Dec 9, 2021 · He has many videos on LS engines and many on the TBI and L29 454 big block. May 2, 2006 · We run LS1's on 98 octane here in Aus, which improves engine life and reduces maintenance costs. 5 angles, direct injection plus Dec 28, 2024 · For example, the 2025 Lexus LS 500 F Sport trim model has a combined gas mileage of 22 miles per gallon, while the 2021 Lexus LS 500 h Luxury has a combined gas mileage of 29 miles per gallon. The LS engines are fabulous assemblies. I know the car runs rich with the overlap but I'm curious real world baselines for comparison. It seems that LS powered Chevelles, which all seems to have overdrive, are getting highway MPG in the very low 20's at maximum. It would appear that the LS2 and LS6 had been secretly mating in GM’s factories, and in 2005, the LS2 was born. 740˝ from the bell housing mounting surface and Gen III/IV LS engines have a crank flange that only extends out . The LS3 crate engine from GM Performance is no longer available. 3 LS Crate Engine. Apr 27, 2023 · Moving into the Gen 4 5. 6 days ago · The 5. Car has stock tune from GM controller. EPA MPG Best and Worst Trucks, Vans, and SUVs; Sep 4, 2024 · Even the LS1 firing order is different (common to all LS engines). 3L Jul 22, 2021 · Agree. I am curious as to why? Is it the cost factor? I want 600+ horsepower but honestly my main concern is fuel economy/gas mileage as this build is for my daily driver. I did give in and text my ex and she said she got 19 city and 25+ highway due to the M6. I've even looked at some V6's. 1997 was the Vette only (LS1) and 1998 was the Vette and the F-Car (Camaro/Firebird) – again LS1 aluminum block 5. 3 vs 4. After doing some more research there are not a lot of classics out there with these engines. The Lexus ES 300h sedan is the undisputed champion when it comes to fuel efficiency in the 2025 Lexus hybrid lineup. Feb 19, 2008 · Go to any salvage yard, all it is to them is another engine. and get rid of the carb and go with a fittech TBI 600hp with under the hood fuel pump but you will hear the pump working so if you don’t want to hear that put the fuel pump in the gas tank but that’s a different set up. Oct 6, 2005 · LS1/LS2 Engine Tech LS2 MPG Trip vs. Nov 14, 2024 · The 5. All four engines are stock short of removal of the accessory drive, Holley ECU, and long tube headers. Buying fuel saving tires. With the proper tuning and maintenance, you can get years of reliable performance out of your LS engine. 8/5. An engine that makes more horsepower, so long as the horsepower is easily made=better mpg. 3 LS engines you have a couple of options here as well, though you will have to address GM’s Active Fuel Management/Displacement on Demand headache with many of these engines, which are based on aluminum blocks, along with the drive by wire throttle body. averaging right now is city driving. 3. 1 day ago · You’ll find that the fourth-generation Lexus LS, produced from 2006 to 2017, boasted advanced technologies like adaptive variable suspension and infrared body temperature sensors. 0 will NOT fit into a '84-'86 XJ engine bay. Its lifespan may have been comparatively brief, but it took LS performance to its zenith. Although I didn't care, I figured the LS2/Auto combination would get crap gas mileage compared the LS1/6-speed combo that I traded in. An LS2 build is quite popular due to the availability of these 6. So I don't think efi is going to be a big help. Sep 2, 2021 · Regardless of its LS architecture, the supercharged LS9 was the sort of brash, over-the-top offering that only a few years earlier wouldn’t have seemed possible from an OE manufacturer. 8 w the 4l60 for the cheapest scenario. We can help you calculate and track your fuel economy. Aug 11, 2013 · So I got a new job and Im now driving about 30 miles one way so 60 miles round trip and its all highway. 8 mpg maybe 10. I’ve learned many people looking to purchase a used LS engine usually opt for a 5. Dec 15, 2021 · VVT works by adjusting valve timing depending on engine RPM: retarding valve timing at high RPM and advancing timing at low RPM. had figures of 14/20/16 mpg. I know the new vettes and CTS-Vs get decent mileage considering the horsepower they are pushing. Some call it Gen V LS. So 4. Jul 7, 2023 · As the LS1 continued to be the tuners’ powerplant of choice, it was time for General Motors to prove that the best of the LS engine family was yet to come. or should we reduce the compression and make this current 572bbc pump gas Nov 12, 2016 · Finally, the LS provides excellent potential fuel economy in today’s four-dollar-a-gallon world, so it’s a god-send for guys who like to have plenty of juice on tap but also enjoy a leisurely highway cruise. There is a silt improvement in MPG but this is negated by the cost of 98 octane “For the looks, I think the Charger tries too hard to look cool. The LS1 engine is a Gen III 5. But as far as the theme of this thread, I'm not impressed. Apr 8, 2008 · If you have an M6 you'll see some pretty decent numbers. Step 1 – Common sense approaches. The Gen 1 and Gen II 350/5. Oh well, their loss for passing on one for that reason. I have a 2000 camaro SS ls1 about the past 2 months, the gas mileage has went to crap. a 3. 0 Vortec Engine Mods video below: Jan 28, 2022 · “GM’s Active Fuel Management has brought ‘4 cylinder’ fuel-economy to the V8 LS engine, however, some owners choose to delete the AFM to use all 8 cylinders all the time,” Stier says. One of the most sought after Gen IV LS 6. The LS engine nowadays is dated by GM standards, the newer LT engine have even more refinements like switching the intake and exhaust valve positions, at 12. No worries! Bruiser Power Solutions has designed, tested, and released the LX3 crate engine, an LT-based engine with port injection using a Gen-IV operating system that pumps out the power. Most guys don't care but my commute is roughly 100 miles a day. In the city , the LS 500 gas mileage is 17 to 25 miles per gallon depending on the trim and model year. They are characterized by their aluminum or iron blocks, overhead valve design, and a 90-degree V angle. LS Engine. 4L V6, 180hp@5200, 205 ft/lbs@5200, dry curb weight 3389 lbs, city/hwy mpg: 20/32 We can help you calculate and track your fuel economy. These engines are not just a one-size-fits-all solution; they come in various displacements and configurations, making them adaptable to a wide range Jan 8, 2013 · The best fuel economy at 75 mph I know of is a guy on a different board who has a early 80's Chevy 6. Most people don't believe it when I tell them that my engine is only turning at 1800rpm while going 80mph. 3 is LT-series. To use an older transmission with an LS engine, you simply either need a . Other options are an LS1, a 6. The last iteration of the 4. a turbocharger/power adder is not all the same! On a road race application, for example, that makes around 550-600 hp, some engine builders say you need tighter clearances because the block grows under longer loads and pressure as the clearances increase during a race. May 24, 2023 · 2. Jun 30, 2023 · Arguably the most popular motor for modern hot-rodding and swap projects, the Gen III and Gen IV LS engine family powered millions of GM vehicles until it was phased out for the Gen V LTs. 00vs 0. 1 mpg to 14. My concerns is fuel economy. 0L) didn’t start until 1999 – in the new GM Pickup Trucks (GMT-800s). Personally Calculated My best to date was 22. ” That engine is actually Luke’s personal race engine, which is set into a ’67 Camaro Super Stock car that weighs Oct 9, 2008 · The closest thing I found was someone with a LT1/700R4 combo claiming to get 22 mpg. 3 Vortec for the 1999 model year. 3 for fuel mileage purposes. However, as we all know, there is always room for improvement on factory stuff. 898” x 3. The last category we will touch on includes the most expensive and exotic engines available in the LS platform. He's claiming 27 mpg with the setup and I believe it. He's released a video that is making the direct comparison between the gen 3 LS truck engines 4. 73 gears. 3 LS Engine. This modern engine family is known for its lightweight aluminum construction, advanced technology, and impressive power-to-weight ratio. Mar 16, 2021 · Changing to an LS engine is a major step up in complexity from carbureted smallblock Chevy engines. The best way to achieve this would be changing the rear gears and a 6 speed manual or 8 speed automatic. Oct 24, 2008 · • 4,160 cc 4. If you want something that is fun to drive and gets better fuel economy, you'd be better served just selling your 8 and buying something else. I was particulalry proud of this recent run up to to the highlands from London, managed to creep over 500 miles on one tank and average 31. They can usually be purchased from $500-$1,500 depending on displacement and mileage. 4 MPG, and my trip said 21. I run 305HO heads on 350" and 268H NO overdrive either just TH350. The difficulty is only compounded when you add things such as nitrous oxide, turbos, or superchargers. 3 "SBC"-base through 2013 did get a distributorless & coil-on-plug ignition. 0 engines is the LS2. 340˝. […] Feb 11, 2023 · Engine History: First Gen. Seems like the MPG sweet spot in these cars is at quite a bit higher speed than most vehicles that like 55-60. 7 bore and stroke were 4. Throttle bodies are also a good thing to upgrade. 1990-1994 Lexus LS 400 (UCF10) Engine. 3 than a 4. Nov 2, 2011 · Is it the cost factor? I want 600+ horsepower but honestly my main concern is fuel economy/gas mileage as this build is for my daily driver. Feb 21, 2022 · And that’s particularly evident when you see its displacement range. 7 May 26, 2021 · One of the most misunderstood performance components on any LS engine has to be cam timing. Mar 13, 2025 · The LS Series. an LS3, but would like to know what kind of gas mileage I can expect of the LS3 V8 engine swap. Now for the Ls engines both my brothers drive newer Chevy's. This level of detail is what made the LS 400 one of the best Lexus models ever. He hasn't said what kind of crate motor he has. Jan 8, 2013 · The best fuel economy at 75 mph I know of is a guy on a different board who has a early 80's Chevy 6. high horsepower or naturally aspirated vs. 3L EcoBoost engine has been recognized for its efficiency and performance in several Ford models. Clearly no one ever buys an LS1 Camaro for gas mileage; nonetheless, our cars get excellent highway mileage especially if equipped with a 6 speed. For sure it will be a later model fuel injected engine. Mar 27, 2013 · Looking to do an engine swap in my old 87 silverado 2WD truck. I currently drive a 99 olds aurora and I get an average of 20MPG. Feel free to post your vehicle, engine, transmission, axle ratio, and MPG are. Oct 14, 2024 · I love taking my LS430 on long trips. The latest generation 4. 2000 Impala: 3. If you're looking for a performance-oriented 5. 00” x 3. Given its lineage and popularity, we thought it would be fun to see if we could subjectively and objectively determine the 'best' LS motor. If you own a Jeep May 24, 2011 · Thanks all! Both cars are M6's. Both are 1/2 ton 2wd, one is a 4. I had the A4 before on my 93 Z28 - loved the car, hated the auto trans. And on my best day I have only gotten 14 mpg at 60 mph. I've decided I want to go with the 5. “One of the engines we recently did is a naturally aspirated 408 LS engine that’s carbureted. 7L only for the first two years 97 & 98. Sep 21, 2017 · Sorry guys – but the LS Truck engines (4. Just forget about decent gas mileage. on e85 it sucks. With today's gas prices and the cost of using premium gas for Oct 2, 2022 · LS engines make the most power on the top end, so it’s a great upgrade for these motors. Producing 385 horsepower (405 horsepower from 2003), the 5. Maybe. 5. Anyway, back on topic. Mar 13, 2025 · The LS engines are part of Chevrolet’s Gen III and Gen IV small block V8 engine family. 0L test engine. Im ok with the fuel economy I am getting. 0L when modified, but with better fuel economy and lower initial cost than the larger displacement options. At this point in time the LS engines are so popular that anything 6. Used OEM Engine. 20 mpg. Search by make for fuel efficient new and used cars and trucks Fuel Economy; EPA MPG: Premium Gasoline Combined MPG: 22. I have 2 complete truck intakes, sensors, injectors, rails, no TBs though. 42 tru trac lock up rear would be fine. LS has a good cylinder head but is lacking a bit in the MPG game. I have around 4,000 miles on the block, T-56, 3. 2 afr. I had an LS1 intake I sold it for $30. EPA MPG Best and Worst Trucks, Vans, and SUVs; Apr 25, 2012 · Turn off the engine torque management to the trans and just be aware of "playtime" on the street and how hard your in it. Tire Pressure. Jul 2, 2012 · What kind of gas mileage do you get with an LS3 engine swap on a stock NA? I've been debating on weather on not to get a Supercharger VS. 0L. 5 mpg Oct 13, 2024 · This level of detail is what made the LS 400 one of the best Lexus models ever. I've thought about lowering my Suburban to gain fuel economy at fast speeds but I'm usually not in a hurry. Dec 17, 2020 · As Late Model Engines closes in on 20 years in business, the shop continues to showcase quality machining, components and engines for the ultimate in performance, and for that, Engine Builder congratulates Late Model Engines on being the 2020 America’s Best Engine Shop in the Race category. What numbers are you getting at the pumps? I'd really like to run a 4. Jan 14, 2025 · – What the Pros and Cons of LS Engines Are. So, what is a LS1 engine? This clean sheet engine design using an aluminum block and cylinder heads, while the same displacement, grew the stroke and reduced the bore size. LS7: Best. It makes 740 horse naturally aspirated. Chevy’s line of small-blocks dates all the way back to the 1950s. 3L EcoBoost I4 – The 2. 3 crate engine, the ATK High-Performance 5. Beyond that, everything else is upgraded including a new internally Mar 15, 2022 · So if you’re thinking about an LS engine swap, LS engine build, or LS engine upgrade, the first number you’ll probably look at is displacement. The LS series, launched in 1997, revolutionized the V8 engine landscape. Half of them think I'm bullshitting. Final Thoughts on the 5. So Im bouncing around the idea of purchasing a car and dropping in a fuel injected engine like an LS engine. Nov 4, 2011 · I am building a Pro Touring 66 Chevelle and wanting to put in an LS9 or LSA engine. Don’t think the guy mentioned what rear gear ratio he was running. The first generation of 6. everything else feels fine. There was never a "LS V6", least not a Gen III or IV. 10 gears. Oct 22, 2020 · Part No. In reality, for a high-performance build, it’s best to delete these systems to obtain maximum power potential. 6 nsa Pro mags, patriot golds, 42lb green tops, ARP bolts all around, canton 6qt pan, pacesetter coated long tubes backed by a magnaflow hey i'm new on here, just got a simple question, maybe some of you have experienced this before. 3L because that's what people are getting the best gas mileage with. 47 dodge truck 350 standard bore iron 305 heads 225 psi cranking pressure. 7 LS1 was the original LS engine, first appearing under the hood of the ’97-’04 C5 Corvette. :PSLS4272SCT We're starting at the low end with BluePrint's 750-hp powerhouse based on a new blueprinted LS3 block. Ford 2. What are the pros/cons of using a FI system on a 350/355. However, the OP has a functional engine that can be used to build a great 383 or bigger engine. the car now has 109k miles on it. This isn’t necessarily going to improve gas mileage, but it will certainly help you not reduce gas mileage. The LY6 short-block was equipped with stock 706 heads with a spring upgrade. On the highway it maintains 29-30mpg @ ~80mph on flat roads. 402 cubic inches (4. Jan 17, 2013 · So, I have an 87 C20, 350 TBI, TH400, 4. 2012 Lexus LS. 0 LS engines. 3 We can help you calculate and track your fuel economy. EPA MPG Best and Worst Trucks, Vans, and SUVs;. . Feb 4, 2006 · Welcome to the board Takes fuel to make the power the ls1 makesM6's definatly get better mpg on the freeway thoughcruising in 6th gear going 70 is only at like 1500rpm. 48”, while the new LS1 used 3. The goal of either system is, in theory, to gain fuel economy. Spain and Scotland both ticked off this year. This handy LS resource page is a good one to bookmark if you’re considering an LS crate engine for a swap, or looking for a 4. Feb 12, 2023 · Hey everyone, I'd like to know what mpg folks are pulling with the GM Connect and Cruise 525 (LS3 w/ ASA Cam). 23 gears on a 67 Firebird and I'm only averaging 9-13 mpg. I want to drive a pre 75 car as a daily driver. So it is not a good idea unless major modifications are on your mind. If the rpm is too high, your engine will burn more fuel, generate more heat, and wear down faster. So if you’re thinking about an LS engine swap, LS engine build, or LS engine upgrade, the first place you’ll likely start looking is at the LS motor’s displacement. 8L LS short block to start a project. Maintain high tire pressure to see the best fuel efficiency. But that is not a new engine by any means but it is still around. Is there anyway that you'd be able to touch the efficency of a LS1? Aug 31, 2011 · I know LS engines are great engines, not debating that. 1 compression ratio, double overhead cam, variable valve timing/camshaft and four valves per cylinder LL8 • Fuel economy EPA highway (mpg): 21 and EPA city (mpg): 16 • Power: 205 kW , 275 HP SAE @ 6,000 rpm; 275 ft lb , 373 Nm @ 3,600 rpm Get an MR-2 Spyder; they're great cars, the 1ZZ engine is dead reliable and gets fantastic fuel economy. Ever. 400˝ spacer and a flat flexplate, or you can use a bell-shaped flexplate and sleeve adapter. 2 liters in-line 6 front engine with 93 mm bore, 102 mm stroke, 10. Mar 8, 2024 · The LS6 is a high-performance version of the first Gen III small-block engine, the LS1, designed specifically for the C5 Corvette Z06. 8L, 5. Feb 7, 2020 · To run this test, we assembled a 6. MOST ls trucks and cars are tuned for a stoich AFR of 14. Sep 28, 2014 · As for the gasoline engines, 4. May 8, 2018 · “We’re all into racing and we live, eat and breathe this stuff,” Siebert says. Aug 6, 2021 · Best of the Best. This results in a remarkable increase in horsepower and torque, giving your LS engine a thrilling boost in performance. Just wondering what some people out there are getting MPG-wise. But, most people just refer to all of them as LS engines due to their immense similarity. 1998 Lexus LS 400. I know the car is expected to run rich with the overlap but I'm curious about real world baselines for comparison Dec 23, 2008 · 94 Z28: 383 12. GM V6 engines that were already mentioned are good swap candidates, and I believe 350SBC/ LSx- series engines should fit fairly easily into the earlier engine bay design. Used lot's of cruise control, but had May 17, 2021 · Best MPG car I ever had was a Honda that was carbed and got 53 MPG. 0’s had just two engine codes, the LQ4 and LQ9. 1 vortec 2500 suburban from 10. I was shocked. Under the hood, the V8 engine packed a punch with 380 horsepower and 367 lb-ft of torque, while the hybrid LS 600h L delivered a combined 438 horsepower. 2. Here, you will be able to learn the basics of EFI and calibration, and how to take advantage of the advanced Gen III V-8 features like the built-in crank location sensor, cam sensor, and knock sensors. 0 vs the L29 454 for the specific target of low-end torque. Find & compare performance, practicality, chassis, brakes, top speed, acceleration, suspension, engine, weights, luggage & more. Everyone in the "ls1" feild think they have some rare one off engine and want mega bucks for the partsits so stupid. 3L hits the sweet spot for many enthusiasts: more powerful than the 4. 3 and T56 averaging about 30MPG. 0L, you could get an LS engine block in a wide assortment of flavors. The LS 400's well-engineered engine, paired We can help you calculate and track your fuel economy. The 5. haven't changed driving style or anything else. It's got a 700R4 and 2. LS swap is a very simple swap for me to do. What kind of power can I make with the 5. No matter how you drive you're not going to see 30+ MPG it's just not going to happen. 3/6. Carbureted cars in the 80's got just as good of gas mileage as cars do now. at cruise speeds around 13 . From an anatomical standpoint, the camshaft can be likened to the brain because the cam profile determines how effectively (when and where) breathing […] We can help you calculate and track your fuel economy. 8L to a whopping 7. Some of the best known ways to improve fuel economy include: Tuning the engine at the manufacturer's recommended intervals. 67 and in my view a better transmission. We consider these powerplants the who’s who of the LS world, and any of these engines would be awesome in virtually any project if you have $8,000 to $14,000 to spend. EPA MPG Best and Worst Trucks, Vans, and SUVs; Jan 1, 2017 · New member first post. Jun 9, 2023 · GM’s Gen 4 LS engines are found in cars such as Camaro, Corvette, and Cadillac offerings starting in 2005, plus of course the large cross section of trucks and SUVs as well. Sep 26, 2016 · If you don’t know how to “slew” a value in an EFI calibration — this article is for you. 3L, and 6. It is the name given to the gen III and IV of small block V8 engines and was first installed in the Chevrolet Corvette. The engine was only installed in the C5 and C6 generation Corvettes. Dec 20, 2023 · Technical specifications for the 1999-2001 facelift Lexus LS 400 (XF20) 4 door sedan. Feb 18, 2024 · No matter which LS engine you choose, you can rest assured that you’ll get an engine that is powerful and efficient. Getting it right will allow you to enjoy your vehicle for years to come. 5:1 forged 4340 crank, forged H beam rods, forged -5cc Mahle pistons, H series bearings all around, B&M flex plate, keyed hub, LE2 heads, custom LE grind, LE ported intake, BBK 58mm, LS7 lifters, comp hi-tech push rods, 1. This engine, known for its high-quality components, features upgrades such as a performance camshaft, upgraded valvetrain, and CNC-ported cylinder heads. 2022 Lexus LS. Feb 5, 2020 · Gen1 Chevy V8 engines have a crank flange that extends . I assume a stock LS platform is a little more efficient than earlier engines, but I can buy a lot of gasoline for the price of a LS install. In the city. But I normally get 12mpg. The LS engines are a series of engines made by General Motors. My Ford Van would get even better MPG and pulled like the 5. 0 or even a LT1. 3L or 6. 2002 Lincoln LS. Oct 23, 2008 · We don't need high performance, we do need reliable, enough spunk to make the car move when needed, and great gas mileage would be nice as well. 3 trucks I know of. Jun 1, 2015 · The engine swap for more power has always been a hotrodding staple since the days of putting a Caddy engine in a Lincoln. This mid-size luxury sedan combines a 2. 5-liter four-cylinder gasoline engine with an electric motor, resulting in an impressive EPA-estimated combined fuel economy rating of 44 MPG. The LS engines have become a favorite for swaps and custom builds due to their reliability and performance potential. 3 LS crate engine is worth considering. Now a tweaked Cummins diesel 6 cylinder can turn in 30+ MPG and have the mules to do some pulling. Best Gas Mileage by Class Compact Cars Engine: 8 cyl. 7L aluminum-block V8 car engine that first appeared in the 1997 Chevrolet Corvette. 1. Nov 9, 2023 · Avoid heavy wheels and tires if you care about mpg! Reducing rotational weight is actually probably the best mpg mod. Keep in mind you bought a V8. If you find yourself wanting more power, a 2ZZ swap is easy and comparatively cheap. like 14-15 miles per gallon. Nov 21, 2024 · Lexus ES 300h: The Best MPG Performer. 23 gears and I'm only averaging 9-13 mpg. By the time you delete and change and recondition, you have a sizeable investment. Also the GTO gets better gas mileage than a lot of the cars that are on the road. 0 or larger usually commands a premium price even if it has 150/200,000 miles. Best and Worst Trucks, Vans, and SUVs; Detailed specifications and fuel economy information on the LEXUS LS 430. Generally, the engines used in cars are classified as LS engines, while the SUV and truck engines are Vortec’s. 2mpg for the whole journey up there. I'm currently leaning towards a stock 5. (with a smaller six-cylinder engine) had figures of 14/20/16 mpg. Therefore, the production of GM LS engine blocks has all but halted. To better some up my questionWhich LS engine has the best horsepower to fuel economy ratio? 66 Chevelle LS ? Feb 2, 2023 · Over drive = more MPG. I'd rather have a fullsize with a 5. They like gas. Truck is a 96 RCSB w a 2021 Lexus LS 500. GM/Chevy first introduced the 5. 2 MPG. I was looking at some specs of diff cars, seems like pretty good gas mileage should be accomplishable. 262. Car has stock tune from GM computer that comes with the package. Feb 1, 2009 · The LS engines have a lot to offer, including all-aluminum construction (on many), impressive head flow, and even simple cam swaps. 8L, nearly as capable as the 6. I am looking at a new engine. Sep 13, 2020 · I pull loads all the time in my vehicles Gen 1 SBC and they out pull and out MPG my friends and relatives with the LS engines. This is a mix of highway, back road driving Feb 12, 2023 · I'd like to know what mpg folks are pulling with the GM Connect and Cruise 525 (LS3 w/ ASA Cam). The original Vortec was part of Chevy’s 3rd Generation of small-block engines, also known as the LS-series of engines, which had made their debut in 1997. I have picked up my 8. Stop and go traffic is a killer though. There are quite a few carbureted BBC Chevelles getting 19-21 with an overdrive set up. 8 with a 5 speed (nv3500) and he avg. 3/4l60e combo. Ive been reading all over Sep 2, 2014 · 2 completely different vehicles 2 350 engines 4 different afb carbs all jetted for best MPG and the 750 afb always made more power Up top and turned in Best MPG. With a 6-speed T56 tranny, it’s not unheard of to get 25 mpg with an LS engine and a light foot. My current best intake and carb for MPG is the cast iron Qjet NOT ported and the Qjet carb. I know the new vettes and CTS-Vs get decent mileage Aug 6, 2021 · Best of the Best. Feb 4, 2012 · Not true, you just selected an engine too small to meet your needs. Engine Descriptor Mar 24, 2008 · My 2006 A4 just driving it normal with a little spirited driving averages 20-21 MPG per tank. 8. The engine was equipped with a Summit Stage-3 turbo cam (for a Oct 19, 2017 · [Editor’s Note: This LS1 engine upgrade guide is the first in a series of LS engine upgrade guides assembled by a team of LS experts at Summit Racing. The increased air density and better utilization of fuel lead to improved overall fuel economy. If you would rather consume this content via a video, check out our Best 6. as for the engine now days your better off Oct 5, 2020 · Cruising rpm—that is, the speed at which your engine’s crankshaft rotates at a given sustained speed—has an impact on fuel mileage and engine durability. Aug 16, 2011 · A few questions about gas mileage and practical use of a daily streetable application of 350 vs LS1, risk/work and reward. 3L LS represents one of the greatest performance values in the modern automotive world. 2L diesel that has been lowered. Mar 26, 2017 · Getting anything above the recommended MPG on a gas engine is a sort of grey area. Sep 18, 2017 · the 200R4 has a higher 1st gear of 1. “Other owners are choosing to delete the AFM because of repeated AFM lifter failures. Jan 25, 2021 · A clearance for road racing vs. Oct 3, 2015 · The mpg im. inshk knf rspgdha ojghya dhlf vuzyg lvrn hkqionc zvtwtl nmf tuwuy avdh iijzwp wljxshp gpifbh