454 tbi reliability. TBI is a SIMPLE fuel injection, noting really hard to understand about it, should be easy to get going Jul 16, 2019 · Hi I need some help with a transmission swap on my 1994 Chevy 1500 4x4. Jul 23, 2021 · I have a 1990 454 tbi. At idle a SBC engine will idle around 16 degrees and 454 low 20’s which is going to be the balancer mark about 3/4 to 1″ to the left of the zero notch on the timing chain cover. Go to Dynamicefi. By now, almost every coach engine has different characteristics from when it was OEM, due to changes in reworked heads, intake manifolds, etc. I got this throttle body last year and it was corroded stuck. 4L are 80PPH, and 91-93 are 74PPH, while 94-95 are 46PPH @ 13PSI but they were run @ 26-32PSI for 67-72PPH. Jul 4, 2013 · I was about to buy a 1992 TBI 454 suburban cheap to swap in my 1985 K10 with 305 engine. IIRC the engine was at only 500 hp, which was very sensible in an engine that needs to run at steady high speed cruise rpms at high power all-day-long. lussoman 340 Replies. Set the timing to where you want, no need to disconnectany wires. 7 intakes to accept a 454 throttle body and tune for that along with cam, headers, etc. Like. My problem was the pressure read ~9. 4 liters. Tags 1750 reliability tbi. Changed nothing. 7 injectors. it has new alternator, ps pump, catalytic conv, fual tank and pump, fuel filter, plug wires, plugs, battery, etc. Cwb81; May 20, 2024; Engine Performance + Maintenance; Nov 23, 2010 · 1750 TBi engine reliability. I rebuilt the TBI and replaced all associated gaskets. It has different guts than the HEI. My son has an off road Blazer 4x4 project that might get one of our stock '70 455s for that killer Buick torque. Jan 18, 2014 · History. Reactions: swb charlie , DerekTheGreat , wb292 and 2 others Jun 29, 2009 · From the numbers I get from 1/2 ton Sub's, I'm betting the 454 doesn't get much worse mileage in the big body Suburban. . Nov 16, 2006 · Mercury Marine had a dual TBI setup atop a supercharged marine 454 a few years ago. Was running a little rough and idling high so I replaced plugs, wires, cap, rotor. At same time I will get rid of that crappy TBI setup and change to a full sequentiell EFI using Vortec parts, distributorless ignition with coils and PCM from a LS1 which I can easily programm myself to my liking. 040 bored block with flattops and 2 small valve reliefs. Even if the CLT fails, you're not stuck, it just won't run very well. Jul 19, 2016 · For fun factor *combined with* reliability, I'd go with the TBI 454. 10:1 gearing, sometimes 3. Both the 454 and 350 engines are considered great reliable engines and it’s hard to go wrong with either for your sports car dream. Though it had a relatively short production span of only five years, the Chevy 7. Is it worth the investment to put a chip in it to improve fuel economy and provide a little more power? I get 7~9mpg with this truck empty or loaded. This throttle body has a throttle blade much like any other throttle body, and at least one, usually two, sometimes more, fuel injectors built right into the throttle body. The harness will work with almost any of the GM TBI ECMs that do not have the electronic shifting 4L60E or 4L80E transmission, however it will control the torque converter lock up when applicable for the 700R4 and 200R4 transmissions. It still is a low comp motor, but has 781 heads and a vortec roller cam, and edelbrock performer intake. The 12-rib belt system is compatible with standard 3V belt systems, 500HP EFI, 454/502 Magnum, 525HP EFI and Hardin serpentine systems. The trans Is not hooked up correctly and only has 2nd gear and reverse but I have the offer to buy a 1991 Chevy 1500 with a 350 tbi and a manual transmission. Jul 29, 2019 · TBI is a little simpler and probably more reliable. May 1, 2023 · P30 454 TBI w/4L80E VIN# 1GBJP37N4R3314754. 2 at cruise, and 12. Can a set of injectors from a 305, 350, or 454 physically fit into the throttle body of the V-6 to flow the higher amount of fuel the modified 4. Located in DFW TX. 3 carbureted V-6. Jan 22, 2023 · HOT ROD has proved it before; for example, former editor Evan Perkins installed a top-end kit on a tired 454 from a motorhome and made 567. Apr 3, 2020 · 1973-1987 Chevy C10 / 350 or 454 Emblems in Grille The last year for square-body C10 production was 1986 because in 1987 with the introduction TBI fuel injection and the 700R4 four-speed The wire colors are the same as the factory wire colors for car and truck TBI injected engines. S. Mar 12, 2015 · There are a few things you can do easily to improve performance (Ultimate TBI mods, injector pod spacer, salad bowl, use a 454 throttle body with the bigger butterflies). with a TBI from the factory, so there is no OEM data for a TBI for these engines. I like the reliability of the tbi. Jan 10, 2022 · And remember set TBI big blocks @4°BTDC and each of those notches on the crankshaft pully are 2°. Please Dec 6, 2015 · Ok, so let me have at this TBI/EFI topic for a bit. Last edited: Jan 7, 2021 Jan 22, 2024 · These specifications provide a glimpse into the power and capabilities of the 1995 Chevy 454 engine. What would it take to get some serious performance out of this thing on a budget / shadetree mechanic type setup? Oct 24, 2004 · The 460 had multi port EFI since 1989, and the 454 got TBI injection in 1990 and GM used that until about 1997 when they call the 454 a Vortec 7100 or the 7. May 31, 2010 · 1989 P. MadMotoUK 307 Replies. You can get the motor set up to run on a FAST system that will provide power all the way to 7500, and have huge torque compared to the stock stuff. You need the TBI distributor. Recommended Mar 20, 2006 · I have a 95 Chevy 3/4 ton 454 ext. Dec 19, 2003 · I would throw some GM combustion chamber cleaner down it and then drive it for a bit to clear it out. I used to machine the 5. The reliability and drivability of the TBI setup would be natural for this application. Nov 18, 2010 · TBI 454's usualley have a cast-iron q-jet intake with an adapte rplate for TBI, if he is getting the whole truck, and it runs, GREAT! swap it over to the older truck and keep TBI, should be a snap. 4 Vortec engine is well known for reliability. Jun 29, 2009 · From the numbers I get from 1/2 ton Sub's, I'm betting the 454 doesn't get much worse mileage in the big body Suburban. Maybe depending on engine family. Then rev to about 3000 rpms and hold and timing should climb to 30-36 degrees depending on programming on the chip and low 40’s for the big block. Recently got my grandpa's 89 chevy 1 ton that has the peanut port 454 tbi, wanting to restore it and fix it up and add some power to it. Building on the popularity of its 427-cubic-inch engine, General Motors introduced the 454 in 1970—one year before emissions standards were tightened and just three years before the gas crisis hit with full force. 2 hp and 537 lb-ft of torque with 87 octane. 1 (not as easy, but easier to get around 500hp out of which is what I would like to have). computer controlled 454. Ed Wright tought me a plenty back then. O. Mar 23, 2006 · I have a 89 K3500 Chevy 4x4 that was equipped with a TBI 454. Intend on using the truck for hauling and towing (planning on getting a fifth wheel in the near future) basically looking for advice on getting more power out of the engine without sacrificing reliability also any mpg improvements would be great but I know Aug 22, 2018 · Will this work swapping Gen V 454 tbi into a 1994 1500 with a 4l60e will the wiring harness from the 350 work. Share Add a Comment Nov 5, 2011 · after 200. Apr 7, 2015 · TBI throttle bodies are different from standard air-door type throttle bodies in that they have injectors built right into the throttle body. 25:1 in both the LS5 and LS6. Jan 8, 2021 · Upgraded Vortec cylinder heads, a more aggressive camshaft, and reprogramming TBI chip to make 300 horsepower or more with a GM Chevy 305, 350, and 454 engine with factory TBI injection. It has a 7. If vehicle is started with starting fluid it will stumble to life Jan 6, 2021 · Joined Jan 6, 2021 Posts 1,461 Reaction score 2,569 Location PA First Name Luke Truck Year 1980 & 1988 Truck Model C25 & V15 Engine Size 454 & 350 Apr 16, 2010 · Guy's adding 4. Heck, you could even shell out the big bucks on the GM Performance Parts TBI Vortec intake. There just wasn't a whole lot one could do. Put the cable back on and your timing is set. It is in great shape and has had many parts replaced but i know that it has done some sitting with this mileage and it being an 89. The 460 was one of the best engines Ford ever built they had the least warrenty issuse with it than any other engine thur the 460 era. 0 L TBI-M T4 Multiair turbo I4 petrol, 2. Mar 25, 2009 · I should have clarified a bit moreMy I swapped in a complete 454 out of a 1993 K3500 into my 87 K5 I am running the 454's ECM and it is pretty much stock except for higher compression (~9:1) and a GMPP truck Torque cam (still very lower on the duration side of the fence). Dec 7, 2012 · I think the pre 1996 454 would tow my 5k boat just fine and maybe even see duty towing a 25' TT some day. Jun 9, 2008 · TBI is not a perfect solution, but you can get a decent aftermarket intake with a quadrajet base and use either a cheap adapter plate, or better yet, the factory 454 adapter plate. 3 engine requires? Throttle Body Injection EFI Systems generally use a single Throttle Body on top of the Intake Manifold. I drove a lot of late-70's to mid-80's trucks with stock 454 and 460 engines back in the day (worked for a construction company during the summer, and worked on farms). They were also known to have issues with the fuel injection unit under the intake that people refer to as the “spider assembly”. Choose From: Holley Terminator 4-BBL TBI Kits with 950 CFM Billet Aluminum Throttle Body--Applications up to 600 HP; Holley Avenger 4-BBL TBI Kit with 700 CFM Throttle Body--Applications up to 400 HP Jul 30, 2009 · While you are daydreaming about "free" TD 427's, be sure to wake up long enough to realize that to run TBI you will need either a complete custom harness and ECM or the entire harness, all sensors, a BBC TBI set of injectors and ECM (likely along w/a custom chip) from a BBC truck that also had TBI to make it even think about heating its own Apr 12, 2022 · Honda and Toyota’s cultures of reliability-over-all embody that ethic and have thus kept each’s legendary reliability in the minds of consumers 2. 3L TBI's to the 2. Then I replaced the engine coolant temp sensor and it purred like a kitten. The complete EFI systems feature a plug and play EFI and charging harness for standard GM type sensors. Jul 4, 2013 · Vortec 454 has a factory roller cam. The one in question has approximately 700 hours and logs/maintenance records from day one as they were the original, and very caring owners. What are the differences in regards to the swap between these different years and different engines. I figure since it's only getting 10mpg, I might as well bump it on up to the days when 454's were getting 450 horse. Jan 12, 2018 · 5. 3/4 ton is something I want if spending the money to get bigger u-joints, axles both front and rear, wheel bearings, steering components, and the 4L80E trans. I doubt that the aftermarket intake has this but I'd make sure. Mar 22, 2003 · There is a much simpler way to do the timing on a TBI. 1L. You may want to steer clear of single-plane and air-gap manifolds for TBI use. However, they can be improved. Jan 10, 2022 · The EST connector for setting timing has more than one location, depending on model-year. Replaced the following:-plugs-wires-rotor-cap-fuel filter-fuel pump At idle a SBC engine will idle around 16 degrees and 454 low 20’s which is going to be the balancer mark about 3/4 to 1″ to the left of the zero notch on the timing chain cover. Nov 26, 2014 · They might be considered obsolete, but that wouldn't deter me from owning/purchasing an older Crusader XL that has been cared for. My '88 K1500 has the wire sort-of hidden behind a plastic cover at the right-rear of the engine compartment--near the A/C and heater-core area. port will have slots in the tip that are more less open. 8 manifolds placed on 3. Sep 8, 2015 · I have an 89 c3500 dually ext cab pickup with the 454 tbi motor. It’s a pretty nice setup. A TBI swap is considered as the components are FREE for the taking. This guide is going to cover everything you need to know about the 7. Apr 30, 2024 · On my 93 5. 7l, you can release a clamp on the fuel line going up to the TBI and get enough space to put in the test adapter. Thanks to this thread, I'm walking the other way. The ECU and it's programming had a very narrow margin of adjustment and manipulation. 3TBI is 96+ vortec heads, Edelbrock 2114 Intake with a carb to TBI adapter, 454 TBI housing with larger 2” bores and start with your stock injector pod with 5. 0 and 5. Recently did a fairly complete tune-up. TBI systems are very sensitive to manifold vacuum. Idle is too low. Hardened valve seats further increased reliability and helped allow these engines to last much longer than the earlier versions, even without the protection previously provided by leaded fuel. 251:4” and a compression ratio of 11. I have tried too many of the aftermarket fans with either reliability issues or insufficient air flow issues so I dont recommend those although I will use a little 10″ HC7102 fan setup as a pusher on the front of my AC condensor in the grill hooked to my AC system to run when the AC is on with less amperage draw than running 1 of my big fans. TBI is the worst handicap you can put on a big block. More torque/power and fuel TBI recommendations for the TBI vehicle owners whether you have a good running vehicle that your just looking to improve with electric fans conversion or other gas mileage improving modifications to changing cams and exhaust to full blown engine replacements and swaps. 9 This pickup is having weird issues with the fuel and I've replace a load of parts and checked a load of wires. Once you've done that give it a complete tune-up (change spark plugs, cap, rotor, spark plug wires (if it needs them), PCV valve, oxygen sensor(s), & air cleaner) and then I would check the timing and change the oil and oil filter as well (make sure you do the combustion chamber cleaner 454 TBI throttle body This is the high flow casting all the TBI guys want. Turning the distributor counter clockwise advances the timing,clockwise retards it. I LOVE the idea of TBI/EFI for our rigs lots of advantages including reliability under all conditions, temps and altitudes. Nov 19, 2003 · The stock TBI manifold has a large water jacket. Also, blip the throttle while reading and make sure it’s solid. 9 at WOT. A camshaft Jun 10, 2020 · Chevy produced three main versions of the 454, dubbed the LS5, LS6 and LS7. Jul 9, 2006 · Here's the deal. It was the same TBI system used on small-block V-8s and the V-6s. 08:1 axle and the 700R-4 with a 0. To some, the Chevrolet 454 big block was the right engine at the wrong time. I set the timing with the wiring near the passenger side if the engine bay disconnected. Power and mpg is quite a bit better than a stock tbi 454. Each model had a bore-stroke ratio of 4. What are the obstacles I’m going to face. If you wanted to place one above the other, then the 350 is considered more reliable and will last much longer. 5 at idle but when blipping throttle it would drop a bit. Oct 3, 2023 · Hello all, Recently bought a 91 crewcab square with a 454 TBI with a 4l80e behind it, after vehicle has been shut off, after more then 30 seconds it won't restart, found injectors to not be pulsing on startup/spraying fuel. 2. 42's Also, there are different designs in the tips of the 02 sensors, based on how close to the heat of the exhaust port, the sensor is placed. Sep 20, 2012 · Back then, the TBI 350 could be had with a 3. Jun 18, 2023 · The 4. Some of the most impactful chevy 454 engine upgrades worth considering include: Cams: Upgrading the camshaft in a Chevy 454 can significantly improve engine performance. It was run via a GM MEFI3 engine computer. No one wants an unreliable engine, no matter how much fun it is to drive. However there is a HUGE difference in stock 454's over the years. Any help will be appreciated. May 20, 2020 · Edit to mention that I have a new stand alone TBI harness, 454 throttle body, TBI ECU, a new chip with a custom tune for a cammed 472, and some other bits I'd be happy to sell. Oct 2, 2022 · It is distantly related to the 454 LS6 V8 that Chevy put in their famous 1970 Chevelle SS — hence the 454 name. 7l tbi/4l60/3. I disassembled the pod, cleaned the body a good amount, Jan 11, 2024 · 89 Silverado Dually, 454 TBI - New to me truck. In conclusion, the 1995 Chevy 454 engine offers a V8 configuration with a displacement of 7. A sensor that mounts closer to the ex. the truck has 97k original miles. Fuel efficiency increased and the TBI system remained until 1995. Sep 16, 2010 · Any stock, but good running, 454 will have more power than a stock 6. The 454 TBI typically came with standard 4. The specs on it put it at a wimpy 260 horse. When I bought the truck I replaced the Distributor, wires, coil, Two-wire coolant sending unit. Jul 19, 2016 · For fun factor *combined with* reliability, I'd go with the TBI 454. In this article we are going to dive into each of the common problems in detail as well as discuss overall engine reliability of… Jun 21, 2023 · Chevy 454 vs 350: Reliability. Found this on another site: TBI L19 454 230 hp @ 3600 385 lb/ft torque @ 1600 rpm 3/4 and 1 ton as well as 1990 454SS 80 lb/hr injectors (9-13 psi low pressure fuel system) After messing with my brothers 1992 454 TBI dually truck and now my 1991 TBI 454SS, I am going to say, I am not a big fan of the 91-95 GEN V big block engine. The 454 TBI adapter is heated as well. 42:1 in vans ) and the 4L80E was a 0. The vortec engines were prone to intake manifold gasket leaks where coolant could enter the engine oil. It extended the 454's life to power buses, watercraft and industrial applications. Put it in gear and it wants to die. Save Share. We thought Apr 4, 2018 · One of the great features of Holley’s Sniper is the ability to set your air/fuel ratio (AFR) where you want it. First I start with a new Fuel pump, STOCK 75lph TBI fuel pump will only support about 230hp before the fuel pressure drops like a rock. 696:1 OD. Sep 20, 2012 · I own a 1994 gmc 3500 dually flatbed crewcab 2wd 5 speed 454. Maybe you could get really lucky and score the Vortec TBI intake off a van. Whether you’re looking to tackle heavy-duty tasks or simply enjoy the performance of a V8 engine, the 1995 Chevy 454 is a reliable choice. com as they have a setup to convert the stock TBi ecm to a flash memory and have tuning software. I want to swap in a TBI 350 out of an 1987 K5 Blazer. cab. Will the existing 454 TBI wiring harness plug in for the 350? I imagine I will have to swap computers. When you get it where you want, disconnect the battery for about a minute or so. When you install an “add-on” TBI on an engine, such as we are doing on the GMCMH, the TBI should have the Dec 26, 2007 · its not much to brag about, its not like its a 600 hp small block 427 theres a couple of 454's on craigslist on the madison and milwaukee ones, put in a 2162 cam and a edelbrock tbi intake with a 454 tbi unit then all you would have to do is get a chip to work with your wiring and you have the best of both worlds, the injection for off road reliability and the low end torque to power through Aug 29, 2005 · The engine is a heavily modified Chevy 4. 4 454 tbi engine (was in there when I bought it). 75:1 OD, while the NV4500 is 0. The injectors for 88-90 7. It was also available in Dec 5, 2010 · The thing about TBI it isnt designed to run more than 5000 rpm on a big block. Those guys were enlarging the opening to let in more air to go w/ the increased fuel from the larger TBI. Jump to Latest TheGrimJeeper 454 Replies. Jul 13, 2006 · TBI L19 454 230 hp @ 3600 385 lb/ft torque @ 1600 rpm 3/4 and 1 ton as well as 1990 454SS 80 lb/hr injectors (9-13 psi low pressure fuel system) TBI 454 255hp @ 4000rpm 405 lb/ft torque @ 2400 rpm 454SS(91-93) and 94-95 3/4 and 1 ton trucks used 90 lb/hr injectors at 28-32 psi (high pressure system) Vortec L29 454 290 hp 410 lb/ft torque But in 1988, Chevrolet introduced Throttle Body Fuel Injection to the 454. 3 Vortec suffers from common problems such as ICV valve and TPS sensor failure, intake manifold leaks, distributor failure, port injection leaks, engine knock, and excessive oil consumption from AFM. This is an older thread, you may not receive a response, and could be reviving an old thread. 000 mls it is time to rebuild my 454 TBI engine. I have at my disposal a complete TBI system, ignition and computer on a '87 454 in a 1 ton Chevy. Mar 19, 2019 · Best bet for a strong 4. Jan 2, 2020 · You'll have to get the Throttle Body for a 454 since it's 50mm bore while the 350 is 42mm. 73:1. The Vortec 454 will kick it's ass but then you have the occasional expensive battle with the injectors (don't forget the regulator and be careful with the somewhat fragile fuel rail), and the POS plastic distributor that the cap tabs break off and the bushing up top wears out. I recommend Jan 17, 2024 · And now for the best part: upgrades! Yes, the 454 is the perfect block for performance enthusiasts or anyone wanting to enhance the reliability of their stock setup. This is something Derek(CrazyVW) and I have been back and forth on for a couple of years So I have a lot of time invested already. 1 at idle, 14. 454 is it worth carb swaping? Looking for reliability. When I finished the install on my C10, I set it as follows: 13. Dec 7, 2012 #17 TBI Re: 1988 Chevy Cheyenne 3500 4x4 454 TBI engine specs 02-17-04 12:33 AM - Post# 389369 In response to Zeitler I pulled the heads from the 454 over the weekend and I found a . 23:1 in pickups, ( rumors of 3. Jan 27, 2013 · I am pretty happy with my tbi 454 towrig. 1974 was the last year of the 454 in the Corvette, although the Chevelle offered it in the first half of the 1975 model year. Now my options are Gen IV 454 (easy swap), vortec 454, or 8. Diconnecting the cable resets the computer, and adjusts itself. 454 engines were forged from cast iron and steel, depending on which level of performance they provided. This heating is necessary to keep the fuel atomized - not necessary for port injection. 4 Vortec engine. 4L camaro engines had to go slightly smaller than the diameter of the TBI so they didn't cut into the coolant passages. I can still see the crosshatch pattern from the finish hone, so I don't think the engine rebuild is very old. dmaos zcrjme izoqh tpnd abt rmriort bgwxsa svvmhaw syiy utey