350 Vortec Mpg

7, does it have hydraulic lifters? im thinking of putting a new cam, bearings, and lifters and need to know what lift is on an oe cam for this engine and what kind of lifters is in it?. 3 mpg on highway at 75 mph. Can someone please help with what I should check next, I have a 1998 Chevy K1500 5. The power and torque of this engine varied widely depending on specific application, as is common with all engines used across a variety of platforms. AdirondackNY 761,142 views. this is the EFI induction from the Mercruiser Black Scorpion 5. Say you get an extra 1 mpg with the 4. I got the dealer to put in a lt1 350 block with all my old fuel injection and other acessories put back on. robinsonsauto 127,135 views. It is currently being produced as a crate engine for marine applications and automotive hobbyists as the 'RamJet 350' with minor modifications. 7L 350 Vortec and I am having problems with it surging while it is in gear. My '98 K2500HD regular cab 350 averages about 11-13 mpg city and 14-16 mpg on the highway with the 4. 7l assault 340, Assault 310, 454 carbureted, Mastercraft 8. Nationwide Auto Locator Quality New and Used Car Parts. This Site Might Help You. However, this is one company who offers some very interesting Vortec 8100 parts. 3 The 245 numbers are actual dyno numbers on a stock engine, not advertised GM figures. 6L Duramax Turbo Diesel Trucks – LB7/LLY/LBZ/LMM. If anyone can recommend which one to use as there's a few different types I will be stroking to motor later on so I won't one that will work both now and after I stroke it. 8 L straight-4 in the GM Atlas engine family. 0 Liter V8 Vortec L96 Engine. I'm just curious if anyone has fuel economy figure for the vortec 350's and 454's in a k2500 style truck. Engine is a 10243880 block with the stock iron Vortec heads. How Much Horsepower Does a Chevy 350 Engine Have? There are several variations of the Chevy 350 engine that come with different horsepower ratings. Every vehicle performs differently, and we realize that a standard cookie-cutter tune or handheld programmer won't always work well for everybody. The Vortec trademark first appeared back in 1988 on a 4. Read a review and see pictures of the 1996 Chevrolet C/K Vortec V-8 Pace Truck at Car and Driver. Call (330) 702-0000 for more information. Shopping for the perfect Chevrolet Avalanche in Cincinnati? Holman Motors Inc. For the 350 the Vortec engine has about 45 more horsepower and more torque, it also doesn’t fall flat on it’s face above 3500 RPM. The 350/290 Deluxe, adds an aluminum intake manifold* and chrome dress-up kit to create one of the most stylish and value-driven engines on the market. Some people have used the Marine 350 "Black Scorpion" Vortec (tunnel Ram style EFI system on their hot rodded 350-383 truck motor. IF I were to use a 305, I would only use the fuel injected Vortec version. 188,565 miles, 5. 54's just fine, so a vortec should be able do better. 7L 350 heads. 56's i get about 12mpg on the 350 vortec. I have yet to see the price of a marine engine ever go down, but we could keep wishing. 7 Vortec Engine Diagram, LS2 Engine, GM 4. Report: 2020 Chevy Silverado HD To Get a New 6. 06 first gear which is good for initial take off but this makes the transmission have the widest ratio …. 383 cubic inch, 355 HP (Truck) = $3595. mine wouldnt burnout till i got the timing dead on!!!!. My '98 K2500HD regular cab 350 averages about 11-13 mpg city and 14-16 mpg on the highway with the 4. I was experiencing a huge decrease in gas mileage. Fuel economy is rated as being slightly better per the EPA, but it’s not a huge difference. 3 being a piece of crap like they talk about the TBI 350 right now). Not the best fuel for good mileage. 3L Flex Fuel V8. 0 MPI/TKS - 181 cid. Find 68 used 1998 Chevrolet C/K 1500 Series as low as $2,250 on Carsforsale. Browse our inventory of Ford vehicles for sale at Fiesta Ford Inc. Of course, such engines as Chevy 350 aren't really good when it comes to fuel, but, as we all know, the lower is the CFM, the better is the economy. The name first appeared in a 1984 advertisement for the 1985 model year 4. 7L 350 heads. I'm driving a 2006 Ford Explorer V6 XLT and pulling my Antigua which is around 4000lbs loaded. Which heavy duty gas-powered pickup truck is faster: a 2017 Chevy Silverado 2500 HD with a 6. 3's are the next generation GM small block that replaced the 350's. The opening and closing valve events and lobe ramp design are changed resulting in more power and bet-ter fuel economy. The back pressure myth has worked for me for the last 2 weeks with gains of about 4 - 5 mpg. These engines are quite compact and short. 50-inch valves. I drove it to Big Sur,Ca. im not sure if its worth building up or just get a new engine for the truck. your garage what would you build it with for maximum reliability and fuel economy. Crate engines. On my 94 GMC 2500 with the 350 V8 TBI, I got really bad gas milage as well. A head, oil pan, valve covers, intake, and so on can all be used on the 265 up to the 400(steam holes required for the heads) Ford couldn't even make one engine let alone a family of engine that can make that claim. 56 gears and 35. 7 ( 350 ) is the old design ( simular to the 1957 design ) motor lower in power ( heads are different small inefficent ports , uses a very slow computer vs the new ones ( like compairing your calculator vs a laptop ) , the 6. 383 cubic inch, 355 HP (Truck) = $3595. 2L, and 502 MAG Models 1989–1994 Carbureted Engines both Sterndrive and Inboard 4. The final version of the 350 was the Vortec 500 L31, which produced anywhere between 255 and 250 horsepower. Search by Model. It will help to improve the gas mileage of your vehicle and deliver excellent performance for a long time. 10 rear end, '99/454 Vortec. Test-drive a preowned vehicle in Cadillac at Highpoint Auto and Truck Center, your GMC resource. They will usually do before 100k and if repaired properly, it won't happen again. 7L and the 350. Often, rebuilt engines deliver better gas mileage and emit fewer pollutants than worn used car engines. i heard a 305 heads was a 58cc chamber head and the vortec heads was a 64cc head. 5 to 13 Liters per 100km which works out to be 18 mpg. Chevy Vortec lifter & valve tap how to repair it - Duration: 10:08. Marine Power proudly presents the LS family of fuel economy airboat engines with better power-to-weight ratios for your 13 foot boats all the way up to your 30 footers. I have friend with a 2001 GM Van with the 350 Vortec, and the drivetrain been flawless, except he did have a fuel pump failure. Page 1 of 3 1 2 3 Next >. We will discuss valve events, piston position, overlap and centerlines. PreownedEngines. 42 gears or 3. 0L Vortec V8 or a 2017 Ram HD 2500 with a 6. My '98 K2500HD regular cab 350 averages about 11-13 mpg city and 14-16 mpg on the highway with the 4. If your reading this then like I did you have been searching the web and under the hood of you GMC Jimmy, S10, Astrovan, Or Chevy Blazer trying to f. How much horsepower does a 1994 Chevy camaro z28 v8 5. 5 to 13 Liters per 100km which works out to be 18 mpg. Yes, you can get a 305 to run better. sure a hundred% do exactly no longer pass too massive with the carb. Under other conditions, the phaser adjusts to deliver optimal valve timing for performance, drivability and fuel economy. I took it to a dyno tuner and he said he didn't really have to change anything, but I still think I should be getting more hp and better mpg. 7-liter Vortec runs on regular gasoline. The primary source of power in the V8 block depends on the cubic inches available. 0L 305 heads. For the 350 the Vortec engine has about 45 more horsepower and more torque, it also doesn't fall flat on it's face above 3500 RPM. ) This was a recipe for great hwy cruising with plenty of burnout power. My foot was the main contributor to bad fuel economy. i have it in a 86 suburban this is a 96 chevy 350 5. What is the difference between Generation I and Generation II? Generation II is the name of a small block V8 engine introduced in 1992. They will usually do before 100k and if repaired properly, it won't happen again. 7l assault 340, Assault 310, 454 carbureted, Mastercraft 8. Also comparing the 5. Hey so I need some help on diagnosing this thing. 1l vortec, 5. Can someone please help with what I should check next, I have a 1998 Chevy K1500 5. The final version of the 350 was the Vortec 500 L31, which produced anywhere between 255 and 250 horsepower. Cast Iron Marine Intake Manifold that fits GM Small Block Vortec V8 using either a Holley or a Rochester Electric Choke carburetor. If you're interested in a new full-size pickup truck, you might be wondering whether you should choose a V6 engine or a V8. 383 cubic inch, 350 HP (Car) = $3595 Additional cost for turnkey package = $1195, $1295, or $1395 * This includes first generation swirl vortec iron heads. The CFM of this carb is 350, and it's quite low, which leads to certain fuel economy, especially at low speed. Designed by Ed Cole's group at Chevrolet to provide a more powerful engine for the 1955 Corvette than the model's original " Blue Flame" in-line six, the 162 hp (121 kW) 2-barrel debut version went from drawings to production in just 15 weeks. Find CHEVROLET 5. Its gas mileage dropped from 18 to 12 mpg, and it dropped suddenly. changed the intake and the distributorrunning it old school basicallyi just put a new cam in it and did it as i was supposed to did nothing differentmy timing is dead on i checked it and checked it and checked and it is dead on i got fire and getting fuel but. im 17 and trying to hear what people will say about what im trying to build. 3L Vortec intake. *Additional cost is dependent upon your VIN number and Alpha Number code (A, B, C, or D) on your computer chip. 451" with 1. I currently have a 327 short block setup 30 over with flat top pistons. 1999-1996. Was a great experience and I would do it 100x over! I was referred to West Coast Engines by a mechanic buddy of mine that has been in car racing for 30 years. This used 2018 Gold Lexus RX 350L Luxury in Renton, WA is available for a test drive and purchase. 08's in their 4x4 5. It runs really nice, but i am not sure it could out pull a nice bbc. I'd say a 305 Vortec shortblock with the stock Vortec roller cam and early 305 HO or 283 Power Pak heads with a cast iron intake and a Q-Jet; 200-4R and similar gears should be able to better that and run a little better. 6L Gas V8 Engine in Addition to the Duramax Diesel. Well a lot of things contribute to lower gas mileage and some you have control over and some things you do not. In a truck, I wouldn't want anything less than a 383, or a 5. The Chevy stock 350 motor had a huge decrease in performance during the 1970's fuel shortage. 1l vortec, Malibu 5. i have it in a 86 suburban this is a 96 chevy 350 5. 5 to 8 miles per gallon. Used Cars Anoka MN,Pre-Owned Autos Minnesota,55303,Previously Owned Vehicle Financing Anoka County MN,Subprime Auto Dealer Roseville,Car Loans Minneapolis,Bad Credit Auto Dealer Anoka,Cheap Cars Golden Valley MN,Used Cars Roseville,Pre-Owned Vehicles Minneapolis,Used Trucks Golden Valley,Used Vans Plymouth,Used SUVs Champlin,Coon Rapids,Maple Grove,Minnetonka,Andover,Anoka County MN Used Cars. 5 mpg with mixed city/highway. 135 hp: 10. On the last trip, while in Idaho and Montana the fuel pumps said "up to 15% ethanol". The prices shown above, may vary from region to region, as will incentives, and are subject to change. I just changed the fuel filter in my 1998 Chevrolet Suburban with a 350 Vortec engine. 3 The 245 numbers are actual dyno numbers on a stock engine, not advertised GM figures. With a 1/4 MILLION mile warranty and unsurpassed reliability, a rebuilt engine from Michigan Motor Exchange offers you an intelligent alternative to a used car purchase. A very clean SUV! It has cloth interior, 4. 3 TKS - 262 cid. Don't go larger than 1. Max rpm was 2500. Open Today! Sales:. I drove it to Big Sur,Ca. Send Message. Don't know if it has to do with my old Quadrajet running so rich, or that I had to mash the pedal more with the 305 to get up to speed. They would fit better than, for instance, the Dodge Hemi. Report: 2020 Chevy Silverado HD To Get a New 6. Search by make for fuel efficient new and used cars and trucks. and if you do the muffler delete or a full true dual exhaust to make as less back pressure as possible with increas hp by 5 and mpg by 1 to 3 depending on 1/2 ton or 3/4 ton. Test-drive a preowned vehicle in New Orleans at Mossy Motors. Since 1938, Edelbrock has manufactured its core products in the USA for quality & performance. 5 is a stronger puller. I got around 20-21 miles per gallon average speed around 80 to 65 some traffic with stop and go. Definately a plus. View and Download Indmar 5. PreownedEngines. Ford Triton V-10 and the GM Vortec 8. The back pressure myth has worked for me for the last 2 weeks with gains of about 4 - 5 mpg. your garage what would you build it with for maximum reliability and fuel economy. The Blue Knight Bosch Gen III fuel injector is 1. php(143) : runtime-created function(1) : eval()'d code(156) : runtime-created. Arc white ($0) Axle limited slip ($840) Engine vortec 6. Post by scout11thacr » May 1st, 2011, 7:31 am". I was experiencing a huge decrease in gas mileage. "This engine has so much more performance and fuel economy it's unbelieable. A Case Study in Creativity. Since the Ramjet 350 crate is merely a Vortec 350 longblock with a Ramjet fuel injection manifold and ECM on top we have to address the common myth of the L31 Vortec 350 valve retainer to valve seal clearance issue. 0L V-8, or Vortec 6000, has been the gas engine of choice in the company's heavy duty applications, including the Chevrolet Silverado and GMC Sierra 2500/3500, since the 2010 model year. Its gas mileage dropped from 18 to 12 mpg, and it dropped suddenly. Yes I agree, each one is different, I am getting about 12 MPG from my V8, 6. I've had it for just a year, and the highway mpg stunned me. On my 94 GMC 2500 with the 350 V8 TBI, I got really bad gas milage as well. Find the engine specs, MPG, transmission, wheels, weight, performance and more for the 2000 Chevrolet C/K 2500 Crew Cab Fleetside Crew Cab. It produces 175 hp (130 kW) and 185 ft·lb (251 N·m) of torque. which one is more dependable and reliable, which one has more "BALLS"(goes faster and burns rubber better), and which one would do better offroad??. Which new Vortec cyl. The simple fact that you can take a part from one and put it on another is great. six hundred cfm is all you prefer except this is 500+ HP engine. 3L has zero in common with a 327, except that it's close in displacement, same is true for the 5. hey you guys with the vortec tree fitty. Fuel mileage moved up to 16 MPG on the highway with more power and no more transmission codes telling me that the unit was slipping. The 350 got a 1 time best of 17. i used the butt of a pop can and a hose clamp. Find the engine specs, MPG, transmission, wheels, weight, performance and more for the 2000 Chevrolet C/K 3500 Fleetside. ) used four Vortex A/C enclosure coolers to solve space and configuration issues posed by. There are a few guys who have adapted the Marine intake to the Vortec 350 which gives you the normal fuel injectors like the 454 and LT1. 3L has zero in common with a 327, except that it's close in displacement, same is true for the 5. POWERHOUSE has thousands of stock and high performance parts for cars and trucks. Best 65+ 2007 Vortec Max Specs by Citlalli Koch such as GM 5. we have used cars of acura, bmw, buick, cadillac, chevrolet, ford, freightliner, gmc, honda, jeep, land rover, lexus, mercedes-benz, nissan, ram, saab, subaru, toyota. my 97 vortec 350 with 3. Anayone know how to get mileage out of a vortec 350? Pulling a car trailer with a automobile loaded it gets 10 MPG gallon at 67 mph. which one is more dependable and reliable, which one has more "BALLS"(goes faster and burns rubber better), and which one would do better offroad??. A good cat-back exhaust or high-flow muffler can add up to 15-20 horsepower to your engine, and may also help with fuel economy. A stock 350 can push the 3. The fuel injected versions were much better, and the Vortec models had even better torque. I know the Vortec is hard to beat, but I won't be racing or towing. A simple analysis of the above data shows that the E-TEC G2 300, while being rated for 50-HP less than the VERADO 350, nevertheless pushed the same boat to a higher speed, while consuming less fuel, and producing better fuel economy. You fillup once a week? That's $60 a year! That's insignificant compared to the price of the truck. 08 gears, I got 450 kms out of a tank. Browse our inventory of Ford vehicles for sale at Sunbury Motor Co. A stock 350 can push the 3. 135 hp: 10. Fuel Economy of 1997 Chevrolet Vehicles. Hope this helps. So cost wise it would be cheaper imo and easier but i still want about 20 mpg when i do my swap. Welcome to our GM programming page. I just don't like it for a street car cause the piston is so short. i have a 97 and the vortec box on the intake, i took that off and covered it. runs a little rough, while driving under normal conditions it sputters, hesitates, and also will backfire, under heavy acceleration no noticeable skip, no sputters, and does not hesitate or backfire. 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. has a new top end and some bolt ons. Their quality and ease of use have made them a popular choice among professional builders and hardcore auto enthusiasts. Hi guys newbie here, I'm looking at putting a vortech supercharger on my fuel injected 350 chev vortec motor dont no anything about blowers never had one before. 02 valve square into the side of the cylinder with a decent cam. this motor will be going in a 1985 c10 with a. 3L Vortec, there are cams, and there are…cams. but is it really worth keeping and building up? or should i leave it alone? or get a new engine?. 2L (I4) all the way up to 8. View our Lexus of Towson inventory to find the right vehicle to fit your style and budget!. 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). 02 valve square into the side of the cylinder with a decent cam. Just got my speedo dead on. Also for: 5. I got it out of an ad in the back of Hot Rod magazine in the little black and white ad section. So after much thought, it looks like vortec 350 has one out on this one. The Vortec trademark first appeared back in 1988 on a 4. boils the tires and get 17 mpg. 0L Vortec L96 V-8 6. Looking for a 2008 Chevrolet Tahoe LTZ located in Winder GA? Ask Akins Ford about vehicle number 32080454. I think part of the problem with the lower mileage was fuel related. 3 L, Automatic 4-spd Regular Gasoline: View Estimates. It is a Gen I SBC and will bolt in with side motor mounts. If you are getting all new stuff it is the same for 383 as 350. 7 Vortec 350 engine rebuild Part 1 - Duration: 28:14. 0L Vortec V8 or a 2017 Ram HD 2500 with a 6. , 350 Vortec. *Chevrolet Performance recommends the Holley 670-cfm carburetor (P/N 19170092) for use with the 350/290 Deluxe. Find CHEVROLET 5. VORTEC ENGINE IN CARS: For the most part, it will be challenging to put a Vortec truck engine into a car. In 1996 the 305ci RPO L30 engine got different heads than were used previously. 0L) and LO5 (5. Send Message. 3L vin code “B” is an aluminum block version of the LM7, and was referred to as the Vortec 5300 HO in marketing materials. 54's just fine, so a vortec should be able do better. 0 totally different animals , the 5. 3 L V6 that used "vortex technology" to create a vortex inside the combustion chamber, creating a better air/fuel atomization. 1L for towing with. 5TD, if you compared a TBI or 2BBL 350 to a 6. My brother did build a nice small block for his s10 using a Vortec 350, stroker crank, LT-1 cam, tbi conversion. We will discuss valve events, piston position, overlap and centerlines. Detailed features and specs for the Used 1999 Chevrolet Suburban including fuel economy, transmission, warranty, engine type, cylinders, drivetrain and more. I have really like the Vortec 454s and my current 8. DRAGZINE: Rebuilding The Quadrajet Carburetor. 2 bolt main. 3 TKS - 262 cid. Re: Vortec 454 vs Vortec 350 Go with the 454 it has a lot more power and the 4l80e is a great tranny. Anayone know how to get mileage out of a vortec 350? Pulling a car trailer with a automobile loaded it gets 10 MPG gallon at 67 mph. 2 MPG on one tank of gas and lowest was 6. 10 rear end, '99/454 Vortec. Test drive this Used Millennium Silver Metallic 2007 Lexus RX 350 & experience the Paradise Cadillac difference today. 350 vortec 400+hp build. Definately a plus. Detroit Diesel Fuel Economy For Sale. i have a 98 chevy with the vortec im also a mehanic its most likly your water pump leaking out of the weap hole. Is there. 08 gears and I got 580 kms a tank. 3 L V6 that used "vortex technology" to create a vortex inside the combustion chamber, creating a better air/fuel atomization. We offer a plethora of Chevy 350 Vortec Engine for your vehicle needs. Everyday driving I'm burning around 12. 3L chevy truck 551602 by ICT Billet OTC 4530 Power Steering Pump Pulley Service Set. A stock 350 can push the 3. The engine doesn't miss a beat! I had no idea I had the uber-version of engines for the Silverado. I was experiencing a huge decrease in gas mileage. Designed by Ed Cole's group at Chevrolet to provide a more powerful engine for the 1955 Corvette than the model's original " Blue Flame" in-line six, the 162 hp (121 kW) 2-barrel debut version went from drawings to production in just 15 weeks. 8 Vortec Engine Performance, Chevrolet Vortec Engines, GM Vortec 6. OBD-II Trouble Codes Help Site 1998 chevy silverado 350 vortec code-pd305. 3 TKS - 262 cid. Although this is a distinction of the '87-'95 engines, an earlier head can be used on this block with an earlier manifold, or the later '96-'02 Vortec heads will also bolt on with a Vortec. Edelbrock is the most respected name in performance. 1l vortec, 5. The only things I haven't replaced are the spark plugs, because I'm not sure which ones to buy. Should get me the same power, but actually increase my mpg's over stock. I could be wrong but I thought that 95 was the last year for the 5. I'm just curious if anyone has fuel economy figure for the vortec 350's and 454's in a k2500 style truck. you might as well go ahead and go with Vortec heads. ::WHAT'S NEW ::FEATURED PRODUCTS:: The Performance World was injected with a shot of Muscle Car adrenaline with the release of the much anticipated 2010 Chevrolet Camaro. I have friend with a 2001 GM Van with the 350 Vortec, and the drivetrain been flawless, except he did have a fuel pump failure. The Vortec 2800 is standard equipment on the Chevrolet Colorado and GMC Canyon. Besides most Vortec's being iron block, as seen above there are some serious size differences and considerations depending on your project. Select MerCruiser Test Model HP Fuel consumption WOT; MerCruiser 3. php(143) : runtime-created function(1) : eval()'d code(156) : runtime-created. I put vortec heads on the engine in my '81 3/4 ton and it has good power with 4. (came from a roll over) Would this be a relatively simple process to swap?. I thought we were talking about a 5. i get about a 19. GM Vortec 8100 V8 Vortec Gas Marine Engine Vortec is the Trademarked Name For a Line of General Motors Engines. 06 first gear which is good for initial take off but this makes the transmission have the widest ratio …. In comparison, a local fellow where I live has a very similar Sedan powered by a Chevy 350 with a carburetor on it, and he's lucky if he can squeeze 15 mpg from it. Crate engines. 5 dually tires that gets 10mpg no matter what loaded ,unloaded ,uphill downhill ,whaterver. 08 gears wold beat my 92 TBI in the 1/4 mile. Ok so I know it is kind of a stupid question but i plan to use my car as my daily driver and I just wanted to know from some of those who have already performed the swap what type of gas mileage are you getting? My engine is a carbed 350 with about 325 horsepower and 350 torque with a 700r-4 auto. Do that math. I had a 96 with a 5sp/4. Accurate Engines has the Chevy 5. The 350 HO, 350 Deluxe, the GMR, and a host of other crate engines all capitalize on this long-standing technology to give drivers the best of all worlds. has you covered. 7L Vortec Inline Engines Deliver More Power PONTIAC, Mich. I almost always stay out of the Thermoquad secondaries and drive smoothly for high MPG (low highway speeds, too). My gas mileage now is 7. 5 to 8 miles per gallon. 23 rear gears,27" tires got 22 mg on a 1500 mile trip from memphis to little rock to wi at a constant 80 to 85 with criuse and a\c and the. 1 rear end?. Crate engines. Chevrolet Silverado 1999-2006: 5. 7L F/I Vin R Black InjectorTubing. I'm not 100% sure if a 5. 0L V-8, or Vortec 6000, has been the gas engine of choice in the company's heavy duty applications, including the Chevrolet Silverado and GMC Sierra 2500/3500, since the 2010 model year. variable-valve timing along with the new 6L90 six-speed automatic to improve fuel economy. My brother did build a nice small block for his s10 using a Vortec 350, stroker crank, LT-1 cam, tbi conversion. Vortec was better on fuel, as it was designed to be, its more effecient than the TBI. 3 mpg on highway at 75 mph. MERCRUISER HORN WARNING SYSTEMS 90-898301003 JUNE 2007 Page 3 / 10 1989–1994 4. I have a 1995 chevy 350 TBI. How Much Horsepower Does a Chevy 350 Engine Have? There are several variations of the Chevy 350 engine that come with different horsepower ratings. And that I just flat out like the old skool style. Was a great experience and I would do it 100x over! I was referred to West Coast Engines by a mechanic buddy of mine that has been in car racing for 30 years. The amount of power you can easily get out of them is endless and much easier to obtain, imo. What are you guys getting for MPG? I wanna see if I'm in line here. After 2000 the 350 wasn't an option either. I could be wrong but I thought that 95 was the last year for the 5. The Vortec 5300 will net you about 14 mpg city and 18 highway miles. the red was a bad decision by gm it eats away slowly at the head gaskets. A little work to either head and your 305 can get near the 1 hp per cubic inch mark. 3L Chevy V-6 will literally bolt into your truck, and easily mate with your THM 400 transmission. Forget about the mpg difference for these 2 engines - they're basically rated the same. The 454 gets 10-13 mpg (a friend of mine claims his 96 454 got 15. 7 Engine Adapter Plates, 5. A cast-iron block with four-bolt main caps is the foundation for the 350 HO, which is topped with iron Vortec heads fitted with 1. Master Engine Rebuild Kit Fits Chevrolet Gmc 454 7. Anayone know how to get mileage out of a vortec 350? Pulling a car trailer with a automobile loaded it gets 10 MPG gallon at 67 mph.