383 Vs 454 Gas Mileage. Of course, the 350 vs. html … A 3. 383 debate … Truck is a

Of course, the 350 vs. html … A 3. 383 debate … Truck is a 1990 Chevy 2500 4x4 Silverado 700r4 standard cab , 8ft box I have been running a 383 for quite a few years with numerous variations including original tbi to 454 … Just wondering how different motors, and set ups are on gas. however the carb is a original carb 1989 vintage it appears to have never been opened … 77 blazer 4x4. 10's, TH400. I had a guy who was running a 454 (the one that told me he was getting 14 MPG with a carberator on it) tell me the following; his buddy had a 383 stroker and claimed he had a … I know another page with no pictures. . Now that I'm getting a Camaro with a 3. In your example a 450 hp LS (under 400 … Learn more Chevy 383 Stroker vs 400 Small Block | Who Was The King? Chevy 383 Stroker vs. I wanted the RPM down low enough for resonable gas mileage but above the cam inefficiency lope area … Using a cam with 218/224 D and 462/469 lift on a 350 vs a 383, 9:1 comp (reg gas here is 87) would I feel the 383 difference enough to … I have an '87 Sub 4x4 6. 4 article http://www. 2, 4. 30 a gallon I thought I'd ask and see if anyone had any tips, or special additive that was … Learn about the Chevy 454 7. You'll get better mileage than it did when it was new and have another 100 lbs of torque and … To increase mileage the engine and gearing will need to be built so the specific rpm range is where the best efficiency can be had. It gets 14mpg hwy cause of the lack of O/D. Is the …. … I’m bouncing between 2 different second gen Camaros one is a 76 split bumper with a 454 for around $16k and the other is a 71 with a 383 for around $22k, what would you guys go with … Check out the deal on 383 Bare Block (1986 – Later Style), 1-Piece Rear Main Seal at GM Performance Motor. 383 for towing and mileage 12-23-03 02:10 PM - Post# 360054 In response to wymjym In my opinion, the 383 would be the better choice. I have a built 350 getting 8 MPG with no power. Wouldn't the rearend ratio needed for towing be counter productive towards good gas mileage? Don't most rearends … Nous voudrions effectuer une description ici mais le site que vous consultez ne nous en laisse pas la possibilité. Something is wrong. 1990 Chevrolet 454 SS specs, 0-60, quarter mile, top speed, engine specifications, pictures, updated November 2025. 24 to 28. 73 rear end instead of the 2. 4/454 MPI/EFI/XLi 320 hp … If I build a 350 and a 383, both with mild street cam, same heads, intake, carb, etc. this is very depressing but I cant afford an Ls1 right now so I was just … I have a 99 K3500 for towing so im not concerned with heavy loads but want the power to tow small loads quads, utv, boat etc when I do take this truck (also not my DD so gas … Chevy Forums FREE technical assistance for your restoration and repair. Was there a big difference in gas mileage? Could the Big block go 80% as far on the same tank of fuel? I am in the process of purchasing a 71' 454 and am curious what kind of gas mileage a well running, unmodified big block gets. Yes, I am fully aware of the “if you are worried about MPGs, you shouldn’t have got a 454” argument. The time now is 03:10 AM. 454 and gas milage don't even belong in the same sentence. Conclusion Both the 383 long block crate engine and the 454 long block crate … Now, if you have full computer controlled EFI, you might approach 18-20 MPG but otherwise consider yourself very lucky if you get 12-14 MPG. dieselpowermag. 3mpg in my truck. They are far easier to make HP and to be driver friendly on todays gas. Q5: Which one offers better fuel economy? The 383 is more efficient due to its smaller size and displacement. Tossing back and forth between a 383 Magnum (or maybe a stroked) vs a 440. I have a 700r4 in it and set it up with 3:55 gears. Not looking for a race car so a 383 would probably be enough power but it seems to be easier to find a 440. The gas mileage for a cruiser … I know roughly what the 350/1500 suburbans get. Would you post what motor, ci, hp, and carb your running and what kind of gas mileage you get? How would a 383 match up with a 350 on fuel economy, vortec heads mild street cam, small Holley carb, Air Gap intake. If the carb is set economically, the throttle isn't … 1973 Chevrolet Corvette Stingray 454 LS5 specs, 0-60, quarter mile, lap times, top speed, engine specifications, pictures, updated June 2025. I have a 450 horse 454. Anyways I have a 80's 350 block 2 pc rms and 4 bolt main that … I am wondering what kind of realistic fuel mileage increase one might see from switching to a throttle body fuel injection system. … Understanding its real-world fuel economy is crucial for anyone considering this engine for their vehicle. Does … I realize that most people that build a 383 arent concerned about gas mileage, but at $2. I have a 50,000 mile 454 and a 180,000 mile 6. , how much stronger will the 383 be? Would it be worth the extra expense for a street car? Hi Folks, I've done 3 months of consistent research on the subject topic. Bottom line - performance OR … I'm one for squeezing out as much fuel economy as possible and within reason. Chevy Forums FREE technical assistance for your restoration and repair. 400 Small Block – the ultimate showdown! Which engine truly earned the title of the king? C1 & C2 Corvettes - 383 Stroker Gas Mileage - I've got a 383 Stroker (10:1 with Dart heads) in my 66 with a properly tuned 650 Holley vacuum secondary carb and MSD Pro … I am curious to see how different the mileage between a 350 vs a 454 Suburban might be. However, it fails to match the higher torque and acceleration … FWIW, with the LT1 or the LS1 your MPG depends on your right foot, but with the 454tbi your gas mileage will barely touch 10MPG on a very lightfooted & downhill day. So now I am looking … I am getting ready do the 350 engine in my 1990 3/4 ton. … According to my fuel app, I am only getting 5. To get started, select the year, make, … The 454 Chevrolet is the largest engine offered in the Chevrolet family, and it provides more power and torque than its 350 counterparts, but these benefits come with … I've got a '68 Fury wagon that I’m going to swap a 383 or 440 into. What do the 454 2500's get in gas mileage? I admittedly do not really tow anything yet, … I figure the intake duration needs to be increased over the 454, maybe 5-6 degrees but other than that I can't think of any real down side. com/tech/general/0701_big_block_diesel_comparison/index. Model specific subject matter experts, classified ads and more. 4L big block V8. 1 million miles driven in 1,339 Chevrolet Corvettes 383 vs 350 gas milage Engine & DrivetrainAll times are GMT -4. 0/364 HO MPI 375 hp 94. But the crank broke. I am also fully … What would you want in your '72 Heavy Chevy? 454 or 383 Stroker? Why? I need to make a decision and am seeking your imput. If I do it, I am not going to get one of the low … So, with the way things have been looking the past several years, I’m starting to lean towards a C3500 454 4x4 truck for a future build, and slowly starting to dislike the idea of … This engine is a favorite of performance enthusiasts thanks to it's robust build and proven track record with mods. A 5. In terms of mileage, I'd say you'll get some with both builds lol. I also like to use that as a tuning reference, meaning, if I was getting 8 MPG out of a mild 440, … Build the 454 with 9:1 compression, Edelbrock Oval aluminum heads and headers. 0 | … Just wondering. The 383 is a torque monster, and so is the 454 but not all the impressive on hp … And NEVER forget the trade off of fuel mileage between the 454 & SBC - it takes more fuel to fill that large a bore & stroke without question!!! But, just my feelings on it. 7L LS1 has a much small cylinder to fill with fuel than a 454 BBC, let alone a 540 or so BBC. If you want a Chevelle with some muscle, put in a big block Honestly, I would think that a … 350 /454 mpg differences The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board Those old 389's and 400's were capable of decent mileage when coupled with a tall gear because they had the low end TQ to get the car rolling without a lot of throttle opening. 5 LPH | 7. I figure since my 350 truck only get 13-15 MPG, how close I could get to that with a mild 454. My '86 Sub 4x w/700R4 and Banks got 20ish. Whether you’re chasing high-revving … I've been having conversations with a buddy of mine about building a new motor for his nova. If someone has switched to an electric pump it might be too big and overfueling the carb, or if it is mounted … Crusader Captain's Choise Fuel Consumption 5. … C4 Tech/Performance - How many MPG can I expect with a 383 stroker? - I know it will vary to some extent depending on driving style, fuel injection system and gears, but a … I have a buddy who burns fuel in a 454 in 21' boat at rates that would stagger your mind. What kind of gas mileage are you getting with your 283? it appears you have the same heads as my dad's 327 does! What gears are … I have a 63 Sport Fury with a 10. There are tons of people out there that think the LS swap is the way to go. This is my page dedicated to gas mileage. 350 Vs 383 Vs 396 Jump to Latest 8. What kind of mileage can you expect from a well-built 383 stroker (in the 400hp range)? I'm sure it's low but I was just wondering what people are actually getting, thanks. Chevy 454 engine specs, performance, upgrades, reliability. 73 gear ratio offers you higher speed and better fuel economy. The small block … what is the best fuel mileage everyone gets with their big block. Quickly find and compare the official … If you had a 500hp SBC and a 500 hp BBC, which would yeild a better gas mileage in the same car? my 383 is a pig on gas and im just wondering how much worse the BBC cars … I have a good running 383 2 barrel with a 727 in my '69 Coronet. This car is gonna be my daily driver (70 chevelle) and gas money is and … C3 Tech/Performance - 454 vs 502 pros cons??? - Being less than happy with the 383 in my 69 I want to go with the BB I originally … Re: 454 vs. How are you all? 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 … If you focus on keeping the RPMs as low as possible while driving, the 383 might actually get better gas mileage than the 350. Here are my findings. I … Nous voudrions effectuer une description ici mais le site que vous consultez ne nous en laisse pas la possibilité. Do the 383 especially if it's equipped with some goodies like nice heads etc. I was thinking in the 12-15 range max. 4 MPI | 310 hp / 310 Horsepower | 1. 7/350 HO MPI 330 hp 76. 73 that I … Hello all! Maybe this is the wrong forum to ask but da Was wondering if you regret building your 383 vs just building a mild big block? … Gallons & Liters per hour : Fuel consumption MerCruiser 454 MPI / MerCruiser 7. 7 US Gallons per hour | Fuel usage Mercury MerCruisers 3. i was hoping to make this a daily driver or close to it. 7K views 16 replies 13 participants last post by 2old2fast Jan 31, 2020 V If so, then the supercharged 383 is just a total waste unless you want 600-900hp in your daily driver. To help you … I know, I know. In this article, we’ll explore the factors that influence fuel economy, … It would be a different story if you already had the core for the 454, but I'd stick with your plan. 5 vs 7. If you are concerned about getting good gas mileage, buy a compact car with a 4 cyl. When I got the truck, the guy had put 2 different heads on so I assume something is wrong … The most accurate Chevrolet Corvette MPG estimates based on real world results of 13. The Chevrolet Corvette Fuel consumption figures vary depending on the type of engine, transmission and model. I told him that he should find a good 454 block on craigslist, get a 496 forged kit instead of the 383 kit for only $200 more $2100 vs $1900, get some peanut port or large oval … Fuel-Injected 454 Gas Mileage Under ideal conditions and not placed in an RV, you may get or can expect to get into the high 20s mpg … Chevy 454 vs 350 engine which one to choose? This comparison article of two iconic engines from Chevrolet will help you find … Can anyone tell me what type of mileage they are getting with their 383 in a Suburban? Truck is a 1990 Chevy 2500 4x4 Silverado 700r4 standard cab , 8ft box I have been running a 383 for quite a few years with numerous variations including original tbi to 454 … IS the gas going to be THAT much more than the 383 even when the 454 is mildly setup? If notthen what is a mild setup for a 454? I'm looking at a 750 carbless maybe? In … i got a 1971 396/402 and am going to make it around 400 hp/torque at the rear wheels. :angry1: todays gas prices take the fun out … Miles per Gallon and Gas Mileage for Vehicles We have MPG data for vehicles from 1984 through to 2023. I started looking in the GMT400 literature I have collected, and there is not a single … Finally found the 6. 460 vs 454 Mpg This would depend on the application. This has to be the … Both the 383 long block crate engine and the 454 long block crate engine represent the best in performance upgrades for classic and custom vehicles. 10to1 gears and a 727 i really like the car but I hate it's fuel consumption. I just got my cars out and gas is killing me. Well I try to provide some good useable info and pictures don’t always add to the page. 0 which would be a better swap for everyday use and pulling a 5th wheel … C3 Tech/Performance - 454 vs 502 pros cons??? - Being less than happy with the 383 in my 69 I want to go with the BB I originally … The average miles per gallon (mpg) of Winnebago’s Motorhome lineup in other words the distance, … You dont buy a 454 truck for gas mileage, you buy one because you need to pull and dont want a diesel 05 LLy ecsb, leveled, … How many miles per gallon does a 98 Chevy 454 get? The 454 engine itself was fine after adding headers which not only eliminated the exhaust manifold cracking but added about 80 or so … C1 & C2 Corvettes - 383 Stroker Gas Mileage - I've got a 383 Stroker (10:1 with Dart heads) in my 66 with a properly tuned 650 Holley vacuum … If you have gone from a 350 to a 454 big block. Hey guys I'm considering making my first engine build up a 383, but there is one thing stopping me. Both will … 383 Build sheet vs 454 build sheet (attached) Jump to Latest 14K views 21 replies 20 participants last post by forcd ind May 8, 2010 M 454 dually gas mileage ?I would check the fuel pump pressure. 6 LPH | 6. 3:1 compession 440. Built properly, it will be … C3 Tech/Performance - Question 1: Big block vs Small block - I'm sure this has been debated endlessly here and this choice is still way premature considering my situation But … C3 Tech/Performance - 383 v's 350 - All things being equal, cam, heads, exhaust etc what increase if any in fuel consumption would you expect turning a 350 into a 383? The 454 is a MONSTER! | How does it compare to the LS? Theblackcarguru 315K subscribers Subscribed I originally wanted to make it a 383 but my dad wanted the car to get reasonable gas mileage. Most truck owners were reporting 10 to 11 miles per gallon when empty and … A "fresh" 383 vs an old 454? Not a question for me. My gas milage is 10 MPG on … Re: Better overall motor:396 vs 454? Nothing offers more value than a 454. what mpg do Okay guys sorry if this is a duplicate thread I think I've read a similar post somewhere but couldn't find it. ntygfmk
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