454 Tbi Mpg Improvement

I can do the work and i have a donor truck so the cost will be minimal. , keep your foot off the gas as much as possible, etc. What is the Gas Mileage of a Small Block 350 V8? Stock? it does have a lift kit on it and large over sized tires on it, but dont take that into account, you can if. The first generation of Chevy big block engines was introduced in 1958, with the 2nd generation being introduced for production vehicles in beginning in 1965. Any advice on tips to improve mpg, and to improve power? It seems like it isn't thrilled about revving higher than 3500 rpm, like it is out of breath. the 350 tb is only good for 350 cfm i believe, and the 454 throttle body is good for 500+cfm. ” Your Silverado is a boulder among pebbles, but even the High Sierras wear down, crack and erode over time. I've got an 87 R3500, 4. The Freedom Center is a great opportunity for anyone looking for that next step. Hello, after reading a lot here i decided to join and ask my question with hope that some of you grearheads may have an answer. I have had critisium for having a bored and stroked 454 and expecting to improve fuel economy based on this type of engine. Less headache in making things work. Initially reviewed by the Rehabilitation Measures Team; Updated by Wendy Romney, PT, DPT, NCS, Cara Weisbach, PT, DPT, and the SCI EDGE task force of the Neurology Section of the APTA in 2012; Updated by Sue Saliga PT, DHSc, CEEAA and the TBI EDGE task force of the Neurology section og the APTA in 2012. Found a complete, running, 1998 454 vortec (L29?) out a chevy 3500 with computer and harness for $750. Search for car parts, truck parts and aftermarket auto parts now. The authors have had favorable clinical experience using PSE off-label, as part of their usual practice of medicine, for more than 100 patients with chronic neurological dysfunction after traumatic brain injury. Posted by PickupTrucks. Pavement Sucks is an enthusiast website covering off-road activities, vehicle modifications and repairs, and land use issues. 5 GPH: MerCruiser 4. 0 MPI/TKS - 181 cid. " Your Silverado is a boulder among pebbles, but even the High Sierras wear down, crack and erode over time. Fuel Injection – TPI, SFI, TBI, SPFI, MPFI LT1, LS1 Wiring. Live it up! with the latest high-performance engine tuning products from Hypertech available for your vehicle. Less headache in making things work. 4L (454) Custom Tuning module. Loaded or empty, uphill or down. and they get about the same millage in regards to weight ratio. Mild Traumatic Brain Injuries were previously undiagnosable, and therefore treatment uncertain, and damages speculative - Authors: Robert Bitonte, Bianca Tribuzio, Kim Hecht, and Donald J. Fuel pump $100 AC Delco 170 stat $12 Stainless headers $150. com would help a lot. 25 inches in bore and 4 inches in stroke and at a compression ratio of 8. This information should be used as a guide only. 0 V10 engine, your gas mileage may vary. TBI-related medical events (e. Full-sized Chevrolet truck gas mileage has increased over the years thanks to innovations such as the Active Fuel Management feature which switches the engine to run on four cylinders when idling and improvements in fuel injection systems. Chevy 454 / 450 HP High Performance Balanced Crate Engine $ 3,895. Keep vehicles in good shape– It is possible to improve gas mileage by 1-2% simply by using the recommended motor oil. We experience up to a 0. *RPO stands for Regular Production Option. 6 Idle speed on EFI models is not adjustable. I’ve heard other people claim up to 10% increase in MPG on newer cars so thought it would be worth trying, but it didn’t seem to help on my particular engine (1. Also a throttle body spacer. I tow a little less than you. It's Chevy's turn as Mike and Joe build a classic 454 big block engine on a skimpy budget of 25-hundred dollars. 08 Chevrolet Silverado 1500 gained 8 mpg after mpg modifications by Houston custom car performance specialists, Presidential Rides. You have to tap off the exhaust manifold/header for the EGR with Vortec heads. Rehabilitation Medicine helps your child and family adapt to changes after injury or illness or adapt to conditions present at birth (congenital) that affect your child’s function. fueleconomy. Its getting old melting plug wires. The Engine of the Week eNewsletter is sponsored by Cometic Gasket. As American automobiles grew in size and weight following the Second World War, the engines powering them had to keep pace. My temperature gauge does not rise above 100 degrees while running. The 454 HO big block is Chevy Performance's most economical alternative crate engine to rebuilding - see images, dyno specs, installation info and more. The Vortecs will flow more and be more efficient, but the TBI is only good for ~520 cfm @ 3" IIRC. 5" duals, tune up, and little things like tire pressure. 63 mpg for the 350 MAG engine on average. The limit on the torque of the 454 was the 4L80E tranny is only rated at 450 ft lbs. The Freedom Center is a great opportunity for anyone looking for that next step. It will do it, but my old 96 350 Burb with same gears seemed to rev much easier (it would go to 5800 rpm fairly easily). It was usually found in the C and K Series 2500 and 3500 pickups. It was the same TBI system used on small-block V-8s and the V-6s. 7 engine out of a 98' K1500. recommended 350 tbi mods; recommended 454; recommended 305 tbi mods; recommended 4. The fluids are good and check out good. The gas mileage was the same but it took forever to get to 50 mph from a dead stop. The 454 could happily pull a 3. 7 liter I got the smaller engine. The duty cycle is high. Plus, these filters can be washed and re-oiled (if needed) so it usually will be the last air filter you ever need. With the 454, putting in Vortec 350 code and chaning the displacement and enter in the tables/constants/switches appropriate to the 454 is all that is needed. It's 4 wheel drive which doesn't help the fuel either. The throttle looks like a carburetor without the fuel bowl, the metering jets or the float. Of course this truck has been fully tuned up and has a more efficient version of the 454 than the truck you are looking at. MAP shows 89-91 %. Ignition modules that are overheating will soon completely cease to function and in the meantime can cause cause electrical shorts, engine stuttering, lower gas mileage, power loss, stalling, and gasoline odors in the exhaust. ) I am wondering if this is all I should expect with a 460 or should I consider an Edelbrock carb to possibly improve the mileage?. It should serve as a starting point from which. It really improved the drivability, but if I had the option I would go with a built 350 or a 350 Vortec motor. 00 Chevy 383 / 350 HP 4 Bolt Performance TBI Balanced Crate Engine Truck Camaro $ 3,095. 4L Compatible With GMC CHEVY C/K Pickup Truck Van Camaro 305 350 454 HEI652R Red Cap. Marine approved per SAE J1928 standard; Designed to increase horsepower & torque. Just keep it stock, stock tires and keep with maintenance clean the egr vavle, run some seafoam through the intake to clean some of the carbon buildup out thats restricting flow, keep tires at right psi, ect. With nothing on the trailer I get 10 or 11 mpg. The newer efi 454 are pretty trouble free as far as big blocks go. Aggressive driving wastes gas. Receive increased throttle response, a 10-15% improvement in torque and gas mileage increase of up to 8%. 1 Big Block get towing? RV101's- How to Improve RV Fuel Economy - Duration. Remanufactured Engines Chevy Big Block. After a first phasing, Ranbow utilizes the assembled haplotypes to improve the accuracy of variant calling results and to infer the evolutionary history of the organism´s. His hands were always dirty, but the MAP sensor looks old. Pavement Sucks is an enthusiast website covering off-road activities, vehicle modifications and repairs, and land use issues. PowerPack Bundle, for 1988-1995 GM 454 Class-A Motorhome 7. I've got an 87 R3500, 4. Adding to your reply, from 96-00, the 454 was built as the Vortec 7400, with 290 HP and 410 lb ft of torque. With nothing on the trailer I get 10 or 11 mpg. Then you need to either buy a TBI intake for Vortec heads, or an adapter plate (Holley makes one) to fit the stock TBI onto the Vortec intake. There are very few mods to improve it. If you have an engine you would like to highlight in this series, please email Engine Builder magazine's managing editor, Greg Jones at [email protected]. I am trying to get him to convert the truck to fuel injection. 5 MPG cruising 3000-3200 rpm's on the highway! Those cold start issues and the improvements coming with the over drive it only makes sense to get more efficient. Can I Improve My Vehicle's Fuel Mileage? GET BETTER GAS MILEAGE - IMPROVING YOUR FUEL ECONOMY Superchips' sophisticated performance electronics are designed to enhance your performance - from fuel economy to towing to racing; we have the products to meet your needs. You bought a 454, noway in heck your Mileage will improve. It is a belief that your vehicle is just a starting point. My temperature gauge does not rise above 100 degrees while running. 9L in it got 13. Also, all repairs a so much cheeper than any diesel stuff. Then you need to either buy a TBI intake for Vortec heads, or an adapter plate (Holley makes one) to fit the stock TBI onto the Vortec intake. It has a 5. ProCharger supercharger system and kits are designed to be installed on completely stock or modified engines. 1 Master Engine Rebuild Kit 1968, 1969, 1970 (Non-Integrated Head). Low end though, the 454 is so much nicer to drive. 7 liter I got the smaller engine. Mayo's TBIMS Center researchers specialize in the analysis of population-based epidemiologic data related to TBI, new ways to increase care delivery system capacity and access to specialized brain rehabilitation care, and the use of ICT to improve participation and quality of life after TBI. 4Liter TBI engine since the block cracked. TBI-related medical events (e. Critical factors affecting outcome are explored with an emphasis on an examination of age at injury. What is the gas mileage of a 1994 3500 454 Chevy? 8 to 10 miles per gallon if your lucky. The first generation of Chevy big block engines was introduced in 1958, with the 2nd generation being introduced for production vehicles in beginning in 1965. Any thoughts?. Whether you're towing a trailer or driving a motor home there are many ways to improve fuel economy. In time we evolved into a community devoted to Pre1947- present Chevy and GMC Truck enthusiasts. I am considering buying a used 2005 or newer motorhome and would like an honest opinion about which engine is better on both flat and mountainous terrain (Ford 6. 10 gears, 36" tires, Turbo 400 and I get about 9 to 10 on the freeway (not sure about the city, probably 7). I bought a 99 K2500 with the 454 and a 5 speed (3. Get 2019 College Basketball season stats, career statistics, game logs and injury updates on the Gonzaga Bulldogs guard. 10 to one (commonly written in the following manner 3. Better off with the std. How to Make a Chevy 454 Vortec More Efficient by Richard Rowe Also known as the Vortec 7400 (7. It had a gooseneck hitch in it from day one and was used as a truck should be. And I want plenty of grunt for pulling loads uphill. What happened? your guess is as good as mine. You can find a list of RPO's here. While I agree with tcodi on the mass and aerodynamics to a certain extent, I can't buy the 30 mpg big block Civic. 7L showed 17 highway; a K1500 showed as 16. Some studies have demonstrated that intracranial pressure (ICP) monitoring reduces the mortality of traumatic brain injury (TBI). The engine is capable of displacing 454 cubic inches of air with 4. Then there's the EGR. Here are some tips to keep in mind. My 81 Z28 currently has a stock 350 chevy with Headers and a 3. Hey guys, i am picking up a nice 1992 chevy half ton with a stock 350 tbi 4x4 5 speed. Get the best deal for Jet Performance Computers, Chips & Cruise Control Parts for Chevrolet V3500 from the largest online selection at eBay. A 10% increase would have been about an extra 4 MPG so even a 5% increase would have been noticeable and worth the extra money. The FS3 is a super gas saver manufactured by Volo Performance. I really think its worth the fuel cost. Low end though, the 454 is so much nicer to drive. View detailed gas mileage data for the 1993 Chevrolet Suburban. Not sure who all makes a 454 TBI intake,pretty sure edelbrock offers a performer for it. As a side note, I have. 1 Notably, there has been an upward trend in the use of CTB over the last two decades and an expansion of the clinical. How To Add 70 Percent More Power to A Chevy 454 V-8. With some of the advancements in the last 20 years in motor mechanics and a well tuned engine it should be possible to improve gas mileage and emissions. I had picture of the 2. Re: 460 powered RV - Gas Mileage and power improvement jasonf on June 14th 2010, 7:20 am My uncle has a small C and it gets a solid 8 mpg no matter what you are doing so that is right in line with Dan-o's I figure. The platelet count as part of a CBC totals the number of platelets in your blood to help screen or diagnose excessive bleeding or clotting conditions. Get 2019 College Basketball season stats, career statistics, game logs and injury updates on the Gonzaga Bulldogs guard. I get just a hair over 10 miles to the gallon. My 81 Z28 currently has a stock 350 chevy with Headers and a 3. It's Chevy's turn as Mike and Joe build a classic 454 big block engine on a skimpy budget of 25-hundred dollars. 4L 454 tbi in it. I bought a 99 K2500 with the 454 and a 5 speed (3. Id like to swap out the tbi and run the mpfi vortec intake (with a mild cam possibly) while i build the 99 block. It is possible to increase the towing capacity of a Chevrolet 454 truck engine by upgrading the power output of the engine with tuning and modifications. I’ve heard other people claim up to 10% increase in MPG on newer cars so thought it would be worth trying, but it didn’t seem to help on my particular engine (1. Found a complete, running, 1998 454 vortec (L29?) out a chevy 3500 with computer and harness for $750. You have to tap off the exhaust manifold/header for the EGR with Vortec heads. The Tunesport Performance Module is the answer to increasing performance and getting the most fuel economy out of your engine. Check fuel pressure. I know, 454 is not a gas saver for sure. 6 Cylinder Chevrolet Engine Kits GM Chevy 250 4. Can a miles per gallon meter help to increase my gas mileage? Yes, it makes you aware of how your driving affects your mpg, and helps to change bad driving habits, like excessive acceleration at a green light. Ford's 1977 LTD was rated at 15 miles per US gallon (16 L/100 km; 18 mpg ‑imp) city and 19 miles per US gallon (12 L/100 km; 23 mpg ‑imp) highway with its smallest engine, the 302 cu in (4. Suggestions: Remove criteria to broaden your results. Re: Olds EFI options?? Recomendations Please. Of course, pickups do tend to get worse fuel mileage. *RPO stands for Regular Production Option. Re: 460 powered RV - Gas Mileage and power improvement jasonf on June 14th 2010, 7:20 am My uncle has a small C and it gets a solid 8 mpg no matter what you are doing so that is right in line with Dan-o's I figure. How hard to get 400 hp out of a 400 pontiac engine real big improvements in the pontiac 400. Read the tech article on Late-Model TBI Trucks Power Upgrades, brought to you by the experts at Chevy High Performance Magazine. 3 TKS - 262 cid. 5L with throttle body injection or a 4. The 454 cid Procharged LSX is estimated at $60,000 dollars for the work and parts involved. 75:1 OD, while the NV4500 is 0. His hands were always dirty, but the MAP sensor looks old. I've already decided I can handle 10 mpg for a limited use vehicle even at $5 or $6 a gallon. No trailer I get almost 13 mpg. I have now created a electric fan page under my recommended TBI menu as this is a VERY important modification. Asked in Chevy Silverado, Chevy S-10 What is the gas mileage of a. Displacing 5. First & foremost, it depends on what you are asking this Suburban to do. com originated in 1997 as a resource page for 67-72 Chevy and GMC Pickup Trucks. how to improve fuel milage on a chevy 350 tbi? help! i used to have a 95 z71 and it would get 19 mpg on the highway and 13 in the city. You dont buy a 454 truck for gas mileage, you buy one because you need to pull and dont want a diesel. The most accurate GMC Sierra 2500 HD MPG estimates based on real world results of 17. But other studies have shown that ICP monitoring is associated with increased mortality. Found a complete, running, 1998 454 vortec (L29?) out a chevy 3500 with computer and harness for $750. Yet for the time, it was glorious overkill that allowed the 454 SS to accelerate nearly as briskly as a contemporary Mustang GT. Your gas mileage is a factor of your weight, the break-specific fuel consumption (BSFC) of your engine, and the load on the engine (gears, speed, wind resistance) etc. I was told that I could get around 15 mpg if I drive it nice. Remanufactured Engines Chevy Big Block. If you have an engine you would like to highlight in this series, please email Engine Builder magazine’s managing editor, Greg Jones at [email protected]. The incentive for me is this: my son had a '99 Yukon 4wd with 350 and auto, and he could pull low 20s on interstate. The Chevrolet Big Block V8 Engine The Chevrolet Big Block V8 In its most familiar and long-running format, the Chevrolet Big Block was Introduced in 1965 as a 396 CID powerplant and from that time forth, it has earned its own place in automotive history as one of the most well known tour-de-brute-force engines on the market. I have a 1999 Chevy Suburban 2500 4wheel drive that I call "The Big Gulp". , keep your foot off the gas as much as possible, etc. This study examined whether an online problem-solving intervention could improve parental adjustment following pediatric traumatic brain injury (TBI). I'd say a shade over 8000# loaded. Stay with the 454. Any thoughts?. It has a 5. I also have some thorley tri-y headers. Gas mileage for 1998 suburban 2500 454? I own one, and with gentle driving (sticking to the speed limit) i get about 16-17. Usually ships within 1 business day through USPS priority mail. chevy 454 engine 96-00 model 4 bolt main roller block Remanufactured and Rebuilt Engines for Cars and Trucks. The most accurate GMC Sierra 2500 HD MPG estimates based on real world results of 17. I need to replace my ’93 GMC 3500 dually 4×4 pickup 454ci. Initially reviewed by the Rehabilitation Measures Team; Updated by Wendy Romney, PT, DPT, NCS, Cara Weisbach, PT, DPT, and the SCI EDGE task force of the Neurology Section of the APTA in 2012; Updated by Sue Saliga PT, DHSc, CEEAA and the TBI EDGE task force of the Neurology section og the APTA in 2012. MKTG 454: SPORTS MARKETING wmv, mpg, and rm files) and Riva Player (for flv Although learning this optional course content may improve your exam and writing. 1987-1991 were still SLOW computers with tiny chips limiting what can be done with the system. So the engine that is rated at 15% more horsepower at the top end, only loses about 1% in fuel efficiency in the mid range. The VA National Center for Patient Safety was established in 1999 to develop and nurture a culture of safety throughout the Veterans Health Administration. Below, we highlight some modifications that you can do to your car to improve power for under $100! Not a bad way to spend an afternoon than to wrench on your car. TBI 454 trucks used a bigger 2" bore throttle body and an adapter on top of a Q-jet manifold from the factory and are quite common. I've got an 87 R3500, 4. Introduction. This is the ratio of gears in the rearend (differential) that you may have heard of in the numerical terms 2. I get my best highway gas mileage at about 2000 rpm's, with cruise control, at about 65 mph yields about 14 to 15 mpg. (That's using mileage data from a gps, since the odometer is not perfectly accurate after adding larger tires) I plan to do a FiTech TBI conversion in the next few months to get my mpg's up a bit higher, among other benefits. Over the next 10 years, every winter Bob set out to somehow improve his TR6, and most of the modifications would make the car a better driver. Top Products For Adding Horsepower and Torque We all remember the Seger-summoning Chevy pickup ads of days gone by - how they were "like a rock. Defects in MMR can lead to microsatellite instability-high (MSI‑H), which can be found in many types of cancer. Suggestions: Remove criteria to broaden your results. It was the same TBI system used on small-block V-8s and the V-6s. The 454 gets very horrible gas mileage. 68 mpg for the 5. Top Products For Adding Horsepower and Torque We all remember the Seger-summoning Chevy pickup ads of days gone by – how they were “like a rock. The orange/blue numbers show the player's percentile rank in that stat relative to their position. It had a gooseneck hitch in it from day one and was used as a truck should be. Big Block Chevy 454ci TBI 1987-1990. With nothing on the trailer I get 10 or 11 mpg. We take the Vortec big-block from this 1996 Chevy truck dually to Superior Automotive to have the heads flowed and ported and more, only on sporttruck. Get the best deal for Jet Performance Computers, Chips & Cruise Control Parts for Chevrolet V3500 from the largest online selection at eBay. Will it make more horsepower than their recent Ford budget build? The dyno will reveal the answer. It would pull a 20 ft trailer w/t a 3800 lb IROC Camaro like it was a little red wagon. The introduction of the 454 engine did not actually begin until 1970. 2 MPG dash read out manual checking 26 MPG, city driving was 18,5 mpg. Couldnt I just put an inline electronic pump after the dual tank lines converge into 1 feed line, and put a square bore to tbi adapter on my intake and go from there? would it be worth the extra effort in mpg? as I would imagine the ccc and tbi are negligibly close to each other. 1 liter was most efficient at 34 mpg and got 2. Remember that 99 was right in the middle of the "everyone's gotta have the biggest freakin' truck they can find, and they don't care what the mpg is because gas is only like 88 cents a gallon!" craze. I have been full timing in both of them. I am considering some performance upgrades to my 2000 Winnebago Brave with the 7. Because of the large difference in cost for the larger engine and the better efficiency of the 5. Instrument Reviewers. For an engine like that, 14 MPG highway is not too bad, right? Thanks! I got 14 MPG with my carb, so I think 14 MPG with a new EFI is pathetic. If the fuel pressure is out of spec the engine runs rich or lean until the O2 sensor compensates if the range is not that far out of spec. Get the best deal for Jet Performance Computers, Chips & Cruise Control Parts for Chevrolet V3500 from the largest online selection at eBay. 2 seconds, while the quarter-mile time was reduced to 15. com, the official website for Chevy High Performance Magazine!. Just gotta say this is one of the dumbest responses to a question I've seen on the forums. The Engine of the Week eNewsletter is sponsored by Cometic Gasket. The first generation of Chevy big block engines was introduced in 1958, with the 2nd generation being introduced for production vehicles in beginning in 1965. 7L V8 TBI OHV 16V engine. That means an option available from GM when the truck was new. Vans in 2000 got only BB PCM's, 2001, they got BB or 0411. I recently bought a 1987 Mallard motorhome with a 454 engine. I've been working on this same thing with my 1 ton TBI 454. 10 to one (commonly written in the following manner 3. If you want to know how to improve fuel economy, aim for the obvious in your fuel consumption habits and be willing to try what you haven’t tried. And I want plenty of grunt for pulling loads uphill. 454 Power Build After a successful budget build, the HorsePower guys go hog wild with their 454 big block Chevy in an all-out performance buildup. If you tow on a regular basis, the 454 engine produces a high level of torque to do the job. Founder and president Art Whipple has always been regarded as a true innovator and enjoyed a very successful racing career as crew chief and owner of Top Fuel Funny Cars and Dragsters, as well as many other forms of racing such as circle and drag boats. 5 MPG but if you do just a full magnaflow system with a high flow catalytic convertor you will get 3 MPG better, the truck had that on when i got it. The 454 is very hard to come by these days,a grand for an used 454 if you find one from an auto salvage yard. Tornado Air improves your everyday driving experience with more power and mileage. If i am in a hurry, it drops to around 11-12. Its all good 1983 Chevy 1 Ton Dooley 454 carb-5MPG 1987 Chevy 1 Ton Dooley 454 TBI-10MPG 1994 Southwind P30 454 TBI-9 MPG. I know a guy who is doing exactly that. 5" duals, tune up, and little things like tire pressure. I just bought a 1988 Chevy Silverado 1500. 5 MPG but if you do just a full magnaflow system with a high flow catalytic convertor you will get 3 MPG better, the truck had that on when i got it. 1 liter was most efficient at 34 mpg and got 2. Dodge Ram 1994-2001: V10 8. 7 engine out of a 98' K1500. Uncle Sam started to tighten down on emission controls in 1971 which affected a lot of the power of the 454. Fresh from a local LKQ Pic Your Part, the Gen VI 454 was somewhat less than fresh, but still managed to produce some stout power numbers. The FS3 is a super gas saver manufactured by Volo Performance. If you want power and a big block,upgrade to the 8. Available for under $300 from performance wholesale outfits, this TBI is a simple install. The specs on it put it at a wimpy 260 horse. 2L with a carburetor, you may see a slight improvement from a throttle body spacer. Its all good 1983 Chevy 1 Ton Dooley 454 carb-5MPG 1987 Chevy 1 Ton Dooley 454 TBI-10MPG 1994 Southwind P30 454 TBI-9 MPG. The 454 could happily pull a 3. But in 1988, Chevrolet introduced Throttle Body Fuel Injection to the 454. Not that the older oval port was terrible, but by this. These supercharger systems come with all the components needed for an attractive, OEM-quality installation. Imo it would be easier to swap the 7400 into the chevelle and if the one in it is original then just stick that in the corner. In total, 1 in 14 patients who present to the ED are investigated by this imaging modality and this increases to 1 in 7 for the population aged >65 years. 4 MPI 454 EFI 454 MPI 502 MPI 8. Owning a L69 equipped GM performance car meant you could have a muscle car that didn’t stop at every gas station it passed. You have to tap off the exhaust manifold/header for the EGR with Vortec heads. I have a 350 and it has 128k miles on it. The early systems from 1982-1986 are just too old to do much with. What is the gas mileage of a 1994 3500 454 Chevy? 8 to 10 miles per gallon if your lucky. If your check engine light is on you more than likely have a hard fault meaning something is grounded out, unplugged, operating out of range or has gone bad. 7L V8 TBI OHV 16V engine. 1 which will outrun the 454. Re: Vortec 454: School me! there are water passage differences in the deck between early and late big blocks that will affect head swaps. With our starters, a high-quality metal gear is embedded into the composite material for added stability and performance. Check out Hypertech's Product Catalog. They have however left plenty of room for improvement on the casting. Observe the speed limit. The 375 hp 8. My '88 cc dually came factory with a 454/TH400 and 4. Held a 100% success rate on assigned projects. 1 wound care quality improvement collaborative paradigm medical management patient safety education network (psen) net health systems, inc. Not sure who all makes a 454 TBI intake,pretty sure edelbrock offers a performer for it. 5 MPG but if you do just a full magnaflow system with a high flow catalytic convertor you will get 3 MPG better, the truck had that on when i got it. The 454 Quadrajet and the 454 TBI are both still in vehicles and with a battery they both start and run without smoking. Especially when I read the magazine articles saying that they get a 5 MPG bump after switching to EFI. Pavement Sucks is an enthusiast website covering off-road activities, vehicle modifications and repairs, and land use issues. Any advice on tips to improve mpg, and to improve power? It seems like it isn't thrilled about revving higher than 3500 rpm, like it is out of breath. We searched PubMed, CINAHL, Cochran, Medline, PsycInfo, and Web of Science databases and extracted pertinent information from publications meeting predefined inclusion and exclusion criteria to explore the effects of PBH WB on sleep onset latency (SOL. Ask a few of the others on here with the RX system, average 1-3 MPG improvement and yes, try 91 octane just to see what it does. Will it make more horsepower than their recent Ford budget build? The dyno will reveal the answer. 6 Idle speed on EFI models is not adjustable. I recently bought a 1987 Mallard motorhome with a 454 engine. A TBI 350 was only rated around 200 HP/ 300 TQ during that time, and a few years earlier the factory carbed 350's in trucks were only rated at 160 HP. My question is, when I first started I drove for about 5 hours and at 65 miles per hour and and all of a sudden it slows to 40 miles per hour. This shows up as a cold running and start problem that may go away when hot with an adverse effect on gas mileage. TBI to Vortec head swap power and mpg improvements?(sorry for the typo in the title) For those of you who have done a vortec head swap on your TBI s-10, what kind of power, or et did you gain? How did it effect the mpg? Its ok if you did other stuff when you did your head swap but please post up the details. The specs on it put it at a wimpy 260 horse. 5L single barrel but. I remember when GM first started offering the TBI engines and they were a dramatic improvement in power and driveability as compared to the previous generation carbed engines. Im looking to get 450-500hp and as close to 600+ lbs of torque and 15+mpg highway. Detailed features and specs for the Used 1994 Chevrolet C/K 3500 Series including fuel economy, transmission, warranty, engine type, cylinders, drivetrain and more. 73 to one, and 4. I have now created a electric fan page under my recommended TBI menu as this is a VERY important modification. It was time for Car Craft's Giant EFI Test, where we put four self-learning EFI systems to the ultimate test so you could pick a winner. Any advice on tips to improve mpg, and to improve power? It seems like it isn't thrilled about revving higher than 3500 rpm, like it is out of breath. 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. ~Read me pleeeze~ For up-front payment total on a remanufactured long block exchange engine, add the 3 figures at the right end of the table rows above. But in 1988, Chevrolet introduced Throttle Body Fuel Injection to the 454. 1 Big Block get towing? RV101's- How to Improve RV Fuel Economy - Duration. I spoke with an ex-454 owner last night via telephone. Its gas mileage dropped from 18 to 12 mpg, and it dropped suddenly. 7L showed 17 highway; a K1500 showed as 16. 4L (454) Custom Tuning module. The 454 TBI has larger butterflies and you may need to get your adapter plate bored out if doesn't have 2" diameter holes.