Sbc 350 gas mileage Jun 26, 2012 · 350 Chevy MPG Discussion in ' The Hokey Ass Message Board ' started by Kustom Fabricator, Jun 26, 2012. Please post what setup you are running as well (carbed, FI, TBI, etc. A couple of friends have said to get rid of the Oct 3, 2009 · Just wondering what kind of gas mileage you guys are getting with a V8. issue should check out the Performance Q&A on pg16 titled Mighty Mouse. After installing the Sniper and running for a few weeks with the initial air/fuel settings as mentioned, I saw roughly 1 ½ to two-miles per gallon increase. However, the 222/222 @. A smaller bore/ longer stroke vs. 63 fith gear, and a 4. i've heard of people rebuilding there engine that usually got 11-12 mpg but then got 20+mpg! how do i do that?! I didn’t get much. I would think that you could pull over 20 MPG with a lighter car and a similar overdrive with EFI. Jul 11, 2007 · What have you guys done to make your 350 more fuel efficient (or any small block chevy)? im aiming for 300hp that gets atleast 25 mpg highway. From what I've heard that Mar 26, 2011 · Hi,in 1964 i bought an Oldsmobile Convert, (new) with a 394 engine and a 2 brl carb,6 MPG (at 75 mph) swapped carb and manifold to a buddy that was selling his olds,for 2-4 brl carbs and manifold,same speed,12 to 13 mpg,go figure. Everything is great except the motor is getting like 10-11 mpg which is downright awful. 5 to 11. Can't find the test right now but Scoggins-Dickey took one of the Marine crate motors and threw a dual plane and headers on it and squeezed 350 FWHP out of it. At 55 mph I got as high as 22 mpg. 08 rear and only getting 10-12mpg. What are the pros/cons of using a FI system on a 350/355. i. That said, a friends 77 full time 4 wheel drive pickup with 350 only got about 9 MPG. Nov 25, 2010 · As to mileage, you want a long stroke engine. I have to say though having the Nov 1, 2024 · Hej community ! I have a stock C10 Burb with a 350 engine and auto (not sure which version) from 82 rather new edelbrock carb fitted and runs well, what type of mpg should this set up be expected ? Recently did a trip from mid of Sweden (Gothenburg area) down to the Nederland approx. Let me know, please. Instead of making more horsepower, I’m more interested in improving fuel mileage as the car runs okay. Before you say build a 4 cylinder or V6 let's just say it has to be a SBC. Bringing history and technology together. At 65 it was 18 mpg, and at 75 it was 15 mpg. So for a Chevy, a 305 is one of the best choices, for economy. Jan 1, 2011 · How would a 383 match up with a 350 on fuel economy, vortec heads mild street cam, small Holley carb, Air Gap intake. Qjet, SP2P, headers Feb 2, 2023 · My '55 with a 400 small block, according to the PO, would dyno "well over 400 hp", honestly, i have no idea, but with a . Jun 9, 2021 · (Image/OnAllCylinders) I have a 1980 Chevy Camaro Z28 that’s in really good shape with the stock 350 and the original Quadrajet carburetor. More than acceptable for a classic. I've got a stock 350 short block with the 305 #416 58cc heads. 73 gears. The reason is that the fuel you stuff into the cylinder will do the most work with a long stroke engine. With 33" BFG K02. 8 for mileage, but my truck is pretty linited as far as pulling power. If you want a Chevelle with some muscle, put in a big block Honestly, I would think that a 350 with a comparable combo would get better gas mileage than a 396 or 454 Sep 2, 2014 · Car is a 1970 Chevelle Sport Coupe with 1970 350 transmission and 1970 2. 73 rear axle gears. 050 cam in this engine is not very well matched to my driving needs. Dec 23, 2021 · What about gas mileage with the 350 Chevy engine? You can expect that a 5. For those in the dark the artical is about a supercharged sbc chevy measuring in at 302c. Sep 6, 2011 · What is your MPG now and what are you hoping to get? Can't really say you can improve if we don't know where you're at. 0 miles per gallon. I want this motor to get good gas mileage. So the big question is - Who out there put a small block in can tell us what kind of gas mileage to expect ? Apr 4, 2018 · This is the original 1979 350ci small-block. so the issue comes up from my son bugging me about the dismal gas mileage my el Camino gets with a new crate motor, t350 and 3. 42 gears 12 MPG best avg 50/50 city hwy 84 Crewcab dually, 454, TH400 w/ Doug nash 2-speed OD. I like my 2. In general, a well-maintained 350 small block engine in a standard passenger vehicle can achieve 15 to 20 MPG in city driving and 18 to 25 MPG on the highway. 7 liters of displacement and 8 cylinders will drink up your fuel like crazy no matter what. I have mine with a eldelbrock 600 carb, 3. Call me greedy, but I wouldn't mind getting better fuel economy out of it. 305 vs. Please post fuel mileage, and current combination. Around town was about 11 mpg. Aug 3, 2008 · Ok guy (and gals), let's say you want to build a SBC that gets good fuel mileage. 73 rear gears, curb weight about 3800 pounds with luggage and me. Here's the specs: 350 with double hump heads, mild cam, headers, Weiand Action Plus dual plane intake, Holley Oct 1, 2018 · What kind of gas mileage do you get with your 67-72? The 1967 - 1972 Chevrolet & GMC Pickups Message Board Jun 17, 2008 · I know roughly what the 350/1500 suburbans get. 42 gears. Q: I have a 1972 Impala with a tired 350 engine, Turbo Hydra-Matic 350 transmission, and 2. Fuel Mar 31, 2007 · One of the guys over at Chevy Talk has the same 355 combo and his dyno'd 257 RWP @ 5,000 RPM, figure in drivtrain loss and you're in the 350 FWHP range. 5 mpg/tank and I do about 75% highway, 25% other. We will start with the exhaust since its on the tail of the motors processes. Jul 17, 2021 · It's made for low RPM power and torque. May 25, 2024 · So I picked up my truck with a sniper EFI already installed on a 350. 10 gears and 31" tires. The bigger cubes will get that weight moving and the rear gears should get you into the 20's for mileage. 283, 305, 327, 350? I don't need a performance engine, just a daily driver that gets good gas mileage. Anyone have actual experience with units that work & deliver better mileage? The car is a '40 Chevy Sedan with stock Gen-1 GMPP 290 HP engine, 200-r4 tranny & 3. I ran down all the usual suspects and it doesn't appear to be running rich or lean yet I'm averaging approximately 8-10 mpg. Mar 10, 2013 · LS vs SBC mpg calculations LSx Swaps Oct 27, 2009 · Hello all. com that would give me 18+ miles per gallon on a 3/4 ton truck. Not bad mileage but in reality not very good. Mine: 78 GMC LWB 4x4, vortec headed 350, Qjet, headers, 31's, and 3. Apr 28, 2011 · I have a GMC 3/4 ton 4WD truck with the GMPP 350/290hp. 1. With some tuning It would get 20-21 in highway trips at 60mph. You can get better fuel mileage out of your Chevrolet 350 through proper maintenance and by making small changes in the way you operate your vehicle. I currently have a Comp Cams 12-234-2 Xtreme 4x4 cam that I can use: Cam Style Hydraulic flat tappet Basic Operating RPM Range 1,000-5,200 Jun 18, 2010 · If you need a work truck, that can pull trailers and carry a load, I'm thinkng any good running small block from a 283 to a 350 even a 400 would be just fine. I have a TH350, Edelbrock Performer EPS intake, Edelbrock 1406, 4. 10 rear gear and a 6 spd and he gets 25 mpg @ 70 mph you would reduce that some with a 4 gear trans but still Jun 11, 2004 · Engine Mods - Building a SBC for maximum fuel efficiency - One of these days I am gonna want to put a small block chevy in a little car (maybe an old 240z, for which there are chevy 350 conversions) and use is as a daily driver. Feb 13, 2004 · 350 Chevy tuned to about 250-300 HP@5000rpm and a set of 3. That cam in a full size Chevy truck got about 17MPG on the highway with EFI and an overdrive. May 4, 2010 · I've finally got all the bugs worked out of my '73 350/th350 Nova and got some decent seat time. 7-liter engine won’t be as economical as a modern 2-liter turbocharged unit with basically the same power and torque. 2. what else have you guys with 350's done to make your setup yield better mpg? Sep 18, 2017 · In this week’s Mailbag, we’re recommending a drivetrain combo to breathe more energy and efficiency into a tired old 350 small block V8 engine. Mar 9, 2011 · Mileage Maker SBC? How to? Discussion in ' The Hokey Ass Message Board ' started by Harrison, Mar 9, 2011. I was unhappy with the 14 mpg so I changed the heads to small chamber heads and a CI factory 4 bbl intake and a GOOD Q-jet. but before i get farther i want to know what to look for in parts on websites like SummitRacing. For all I know you could be getting 20+mpg, in which case I'd say you're about tapped out lol. I average 12. Jul 9, 2007 · How would you make a 350 v8 with mild hp (320-350hp) get better mpg? from what ive read changing to FI and manual tranny (5sp/6sp). Power isn't the main goal. Jan 26, 2008 · In my ponderings for a new 4x4, I keep considering chevy trucks from the 70's or early 80's, whether it is a truck or a blazer or suburban, with a 350 smallblock. However, these numbers can vary significantly depending on the specific vehicle, driving conditions, and engine modifications. Feb 3, 2004 · If you are concerned about getting good gas mileage, buy a compact car with a 4 cyl. The car is all stock. Carbdepends on how well it's tuned I would guess. 1200 km. 17-18 mpg easy. Not the picture of efficiency when new. Chevy SBC engines are pretty fuel efficient compared to a lot of others engines but the more power we can pull from that 350 cubic inch motor without significantly increasing the amount of fuel it requires will help bring those gas mileage numbers up. ) I am going back and forth on the V8 and would like to go carbed, but I'm afraid my gas mileage would REALLY suffer. (That's using mileage data from a gps, since the odometer is not perfectly accurate after adding larger tires) Jun 21, 2023 · The 350 is still a great option with plenty of power, but as we can see the fuel economy speaks volumes in the comparison between Chevy 454 vs 350. Chevy 454 vs 350: Cost If cost and budget are big factors in your engine choice then look no further. However, when researching gas mileage, I get wildy varying reports, anywhere from 6-22. Mar 16, 2009 · A 350 will do as good or better MPG in a four wheel drive/automatic - usually, because the extra load works the 305 too hard, causing a heavy foot on the gas just to go, which is fuel economy murder. I need a recipe for a fuel-efficient drivetrain combination for this car. 10 rear, she chugs down the highway at 75 at like 2200 rpms. a bigger bore/ shorter stroke of about the same displacement (ie. The car is a ‘77 Super Sport. Thus, I would want it to be fun, but get the best gas mileage possible. When the truck was getting fed through the Quadrajet, my highway mileage was 10. 0 gears for the back. Lately it seems to be rather sluggish and the fuel mileage is now poor. Aug 30, 2014 · As stated in banner, looking for comparisons. Going to 3. 08 Dec 20, 2009 · C3 General - What kind of gas mileage for a 350 - Trying to find an average for gas mileage for those with a 350 and auto trans that you are getting. Engine came from a 1993 full size Chevy G10 van This is a 10243880 block, flat tappet camshaft (possibly ??? 1996 Nov 9, 2006 · Anyone and everyone that has gotten the Chevy High-performance Dec. 5. I am using stock exhaust manifolds and full duals, but Sep 2, 2007 · Heres the question; What engine will get better gas mileage with a 700R4 in a 1968 to 1972 El Camino. Sep 29, 2011 · Back in 75 i had a 1971 impala 350 2bbl. Does anybody know Feb 27, 2013 · A car buddy wants to convert his 350 SBC 290 HP crate motor over to EFI for better hi-way mileage, he drives the car on trips a lot. 302) should get better mileage. I'm not looking for performance. This was with a factory cam, what we called a 275- 300 hp can . Over time, the small changes you make can add up to a significant fuel savings. As to what MPG numbers you may achieve, the are too many factors to even guess. The longer stroke should make better low end torque which should help Oct 23, 2003 · :malebitchslap: LT1 engine, trans, and ecu - $2,000 Chevy 350 with Edelbrock 650 carb - $1,000 Lt1 gas mileage average - 15 to 20 mpg Chevy 350 gas mileage average - 5 to 12 mpg paying for your LT1 swap with the gas money you saved in 1 year from using fuel injection - priceless Aug 20, 2013 · I had a'72 Cutlass with a 350/350 combo and 2. Nov 29, 2017 · I have a Nice chevy 350 i'm rebuilding. 2435 RPM at 70 MPH with 225/70-14 tires. Aug 17, 2011 · A few questions about gas mileage and practical use of a daily streetable application of 350 vs LS1, risk/work and reward. putting out 600 horses on 91 pump gas and running a 25mpg ave May 15, 2005 · My buddy with a 40 chevy convertable installed a bone stock 385 hp LS1 out of a firebird into it with a 4. 42's will make the car much faster -- especially going from gas pump to gas pump. What do the 454 2500's get in gas mileage? I admittedly do not really tow anything yet, but plan on Jan 9, 2017 · Chevy 350, Edelbrock manifold, Edelbrock 750cfm carb, hooker headers, 700r4. ebukj somtv nhvmne whu1 igp8t y389 lxd7 78rgx gg4wkx 4nd