What kind of fuel pump does a TBI 454 have?

Stock TBI 454 makes 230hp and 380tq so stock fuel pump is maxed out right off and a typical 454 will run better with a fuel pump upgrade even with stock chip. GAS MILEAGE. Always a big complaint with 454 TBI trucks. 90 and older is particularly bad and that is largely due to NO OVERDRIVE.

When did the GM 454 TBI 220 come out?

I’m having problems with my engine which is a gen 5 454 tbi 220 model made in 1992. It has the OBD1 system which was the predecessor to the OBD2 system that all cars 1998 I think and newer have now. With the OBD1 system you don’t need a code reader to get your codes.

When did the Chevy 454 RV engine come out?

Manufactured by Chevrolet, the 454-cubic-inch big-block V-8 is a workhorse used in a multitude of applications. The reliability and high torque made it an ideal choice for everything from light duty trucks, to SUVs and motorhomes. In its current displacement capacity, the engine debuted in 1970.

Is the GM 454 a throttle body injection?

I’mpretty sure Tim’s is a throttle body injection like mine. These look like a carb but are far from it. For that period it was GM’s answer to a carb and I think they worked better than a carb, but they came with their own problems. I’m having problems with my engine which is a gen 5 454 tbi 220 model made in 1992.

Is the 454 engine a good RV engine?

The 454 is a great engine. Our 1989 Southwind (454 engine, 32′) made the trip from Denver to the Grand Canyon just fine last year and has been very reliable for the last 3 years we’ve owned it. We love the coach and don’t think we need to upgrade anytime soon.

Can a 454 take you on that trip?

Can a 454 take you on that trip– absolutely. The only HAVE TO other than routine maintenance is to change the BRAKE FLUID. Old/hydrated brake fluid boils at under 300 degrees F– new fluid around 500 degrees. Loosing your brakes in the mountains is not when to decide to change the brake fluid.

Are there any problems with my 454 c.i.engine?

The only problem I’ve had with mine is a small power steering fluid leak, which I plan on fixing this winter. Actually, the formula for descending any grade is to downshift until you find a gear that will hold your speed in EQUILIBRIUM– you are neither accelerating nor decelerating WITHOUT USING YOUR SERVICE BRAKES (brake pedal).

Can you change the intake manifold on a TBI?

Intake manifold. On the 87-90 Mark IV blocks that have the crappy iron carb intake. yes change that to the Edelbrock 3764 especially if your upgrading that cam. On the Mark V 91-95 engines. With stock cam, nothing to be gained from that change.

Is there a bigger throttle body for a TBI?

Larger throttle body. www.rvmorsemachine.com and www.tbiparts.com both offer a 54mm bored 750/800 cfm throttle body. unless you change out the tiny cam your not going to get a benefit from a larger throttle body. Also not going to get any benefit unless the intake is bored to match the throttle body.

Where can I get an AC Delco for my TBI?

AC Delco 1103952 you can get it from either GM Dealer or Jegs or Summit racing. Plug wires, if your running a stock engine then stock replacement wires are typically fine but any decent peformance engine USE A BETTER WIRE.

What makes a 95 TBI Chevy run crappy?

2–EGR….did you use the VIN # and go to the dealer for the correct one? to test it ,disconnect the vacuum line and plug it and go for a ride. 3–When I removed the cat on mine ,the 02 sensor set the check engine light on and was going thru more gas but didn’t run crappy.

What’s the gas milage on a 95 TBI?

Finally, when it dieseled, it threw a CTS code stating that a temp of -40f was indicated (in Houston TX). Replaced the CTS, problem went away, and my gas milage went to 17 mpg (no joke) on a 5.7 TBI with 200k miles. Beat it to fit. Paint it to match.

What’s the idle time on a GMC TBI?

IAC 160 steps, throttle sensor . 43 volts, map sensor 2. 15 V, rpm 800,egr duty 0%, throttle angle 0%, injector pulse 4. 3ms, knock sensor 179, engine run time 2 seconds, Well it is not an exhaust restriction. I dropped the exhaust piple down and started her up. Still stalled out in about 2 seconds or less.

Is there a problem with my 454 engine?

I have asked a number of people and have been told that it is a motor home issue caused by the dog house engine cover and that the 454 was redesigned around that time to increase engine heat to increase millage. My question remains, is it just my 454 or have other people had the same problem?

How to remove Idle Stop cap from a GM TBI?

On a factory TBI unit the idle set screw will be capped from the factory so you cannot mess with it. But you just knew one day you would. Not all caps look like the one pictured but this is the one that is hardest to remove. The easiest way is to first grind the cap flush with the surface of the throttle body.

How to troubleshoot your TBI fuel injection system?

Troubleshooting your TBI Fuel Injection System Most of the problems encountered while installing your fuel injection system or after a time of operation are very simple. 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. See

Where is the idle button on a GM TBI?

The “A” and “B” terminals are located on the top right of the connector. Unplug the IAC valve located on the passenger side, rear of the throttle body. Start the engine. Insert a T-30 size Torx driver into the Idle adjustment screw that is located behind the plug removed earlier.

How does the TBI system work on a car?

TBI being a MAP sensor based system will see the leak just like opening the throttle blades and will feed the leak and then you have a high idle. Finding the leak can be tricky as it can be the intake gasket on the bottom side if you are using a Chinese junk carb intake or you weren’t real careful putting the intake on.

How do you change the idle speed on a T-30?

Insert a T-30 size Torx driver into the Idle adjustment screw that is located behind the plug removed earlier. Turn the screw to adjust the idle speed to 650 RPM +/- 50 RPM. Turn off the engine and disconnect the negative battery terminal from the battery using a wrench. Reconnect the IAC valve.

How many inches of vacuum stock does a TBI use?

Hook it to all ports on that throttle body. When you get to the map port just move map to a different port on the throttle body. Typical TBI motor will idle with 20-21 inches of vacuum stock. Pretty much any of the cams I recommend or have listed on the website will pull at least 17-18″ of vacuum at idle.

When to change the TBI pump in a car?

Nice thing about the Actron gauge is the hose is long enough that you can watch it while you drive. If the fuel pressure drops more than 1 psi under 8-10 seconds of full throttle the pump should be changed and dont put the stock TBI pump back in even if your engine is stock.

What is the TBI code on a 1990 Chevy truck?

Consult a service manual or see below for any check engine light code definitions. You can use a late 80’s or early 90’s GM TBI definition. If you have access to a scan tool use a hook up for a 1990 350 cu. in. 5.7L Chevrolet truck. For some scan tools enter VIN 10th“L” 3rd“C” 8th“K”.

What causes a Chevy Silverado to start without turning the engine?

A fuel delivery problem is usually caused by a clogged fuel filter, no fuel in the tank or a faulty fuel pump. A starter that spins without turning the engine is caused by the starter gear failing to engage the engine’s flywheel.

What kind of diagnostic tool do I need for GM TBI?

The ALDL connector allows for full diagnostics of your unit. A scan tool can be used and set up for a GM TBI application to read the data, or to check for stored codes. Consult a service manual or see below for any check engine light code definitions. You can use a late 80’s or early 90’s GM TBI definition.

What was the stroke of a 1995 454 engine?

The engine had a bore of 4.25 inches, a stroke of 4 inches and 110cc aluminum round port cylinder heads. Stroke value represents the distance a piston must travel each direction when entering and exiting an engine’s combustion chamber, and bore refers to the amount of space a piston has to enter a combustion chamber.

What was the name of the 1991 Chevy 454?

Generation Five. The Generation Five, called Gen V by Chevy’s marketing team, is the name given to the 1991 Chevy 454 engine. The new name came because of changes made to the engine to “modernize” it.

What kind of engine does a Chevy 454 have?

Other minor modifications were made to the engine block itself in an effort to cut down on modern production expenses and make repairs easier. The 1991 Chevy 454 engine design is a high performance V8 engine, making it a powerful truck engine.

What is the Green Line on a Chevy TBI?

The green line is the vent line that goes to the tank. You have three lines attached to the tank: fuel line, fuel return line and ventilation. The vent line is missing on cars with ventilated gas tank caps. Due to a cam change I am short on Vacuum at idle.Is there a way to add a vac pump in the system to solve this problem.

When did Chevy start using the 454 engine?

The LE8 454 was the most common from 1973 to 1991. The L19 TBI, or throttle body injection, powered 1987 and later trucks as the second 454 engine option. The TBI 454 had fuel injectors in the middle of the throttle body that increased fuel efficiency, power and durability. Chevy began installing 454 V-8s in its trucks in 1973.

What kind of engine does a 1992 Chevy truck have?

C3500 The 1992 Chevrolet C3500 truck featured a 5.7-liter V8 engine capable of producing 190 horsepower at 4,000 rpm. All models came standard with a five-speed manual transmission and a fuel tank that could hold a maximum of 34 gallons of gas.

Which is better a Vortec 454 or a 454 TBI?

Both engines can benefit a LOT from higher flow cylinder heads and cams. The Vortec 454 can have conventional larger sized fuel injectors installed into it if needed unlike its smallblock brothers which need an intake manifold change to install larger injectors. lol….

What kind of fuel injectors does the GMC 454 Vortec use?

The Vortec 454 uses 8 24 lb/hr fuel injectors that are sequentially fired. Both engines can benefit a LOT from higher flow cylinder heads and cams. The Vortec 454 can have conventional larger sized fuel injectors installed into it if needed unlike its smallblock brothers which need an intake manifold change to install larger injectors. lol….

What kind of engine does a GMC 454 have?

The 1990 454SS was like HOLY SHIT! A sweet shortbed with a BIG BLOCK!??!!! :head: :head: :head: Im walking on sunshine! The Vortec 454 uses 8 24 lb/hr fuel injectors that are sequentially fired. Both engines can benefit a LOT from higher flow cylinder heads and cams.

What should fuel pressure be on a TBI fuel injection system?

Fuel Pressure is critical to the operation of a fuel injection system. Always check to insure that you have the proper fuel pressure. Fuel pressure should be a constant 10 – 15 PSI on a TBI fuel injection system and is typically around 12 – 13 psi. Higher pressure than 15 psi indicates that there is an issue with the installation.

What do you need to convert a TBI to a carburetor?

The most basic things you’ll need to convert from TBI to a carburetor is a carb and a matching manifold. You could try to track down a used stock manifold, but aftermarket aluminum manifolds like the Performer RPM make more power, are lighter and will only run you about $60.

What kind of transmissions did Chevy trucks have in 1994?

A variety of transmissions were used on 1994 Chevrolet trucks. The transmissions included automatic models 4L60 and 4L80, the Borg Warner T5 manual and New Venture manual models 3500 and 4500.

How to identify manual transmissions on Chevy 1988-1992 trucks?

How Do I Identify Manual Transmissions on Chevy 1988 -1992 Trucks? The five transmissions installed on 1988 to 1992 Chevrolet trucks, according to Drivetrain.com, were the Borg-Warner T5, the Getrag, Muncie or New Venture models HM290, 5LM60 and NV3500 and the New Venture NV4500. The NV4500 appeared on 1992 full-sized trucks only.

How much horsepower does a 95 Chevy 454 get?

I have a 95 Chevy 3/4 ton 454 ext. cab. The specs on it put it at a wimpy 260 horse. 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. What would it take to get some serious performance out of this thing… on a budget / shadetree mechanic type setup?

What’s the difference between’93 and’94 TBI 454 engines?

I was told that beginning in ’94, the 454 horsepower rating actually increased to 255 from 230 and the ft.lbs of torque to 405 from 385. Anyone confirm or deny this claim? or explain what is the difference in pounds, if any, from one anther? Thanks in advance! I searched this site and came across the above thread.

Is there a 1997 Silverado dually 454 for sale?

1997 Chevrolet C/K 3500 Silverado Dually 454 V8 Gasser Classic 1997 Chevy C/K 3500 Dually Gasser with big 454 (7.4L) V8 Vortec. Good CARFAX with three Texas owners and no accidents. Affordable classic ready to haul, hunt and play! Got this clean 4 door Dually for sale. Has air ride suspension. The engine is a big block 454.

What kind of engine does a Chevy dually 454 have?

West Coast Classics are proud to present an exceptional Pro Street example of this 1969 Chevrolet C10 Full Size 1 Ton Stepside Short Bed Custom Dually Pick Up with a built Big Block 454 c.i. ‘CE’ code engine which is obviously ridiculously 1975 Chevrolet Silverado C-30 Ramp Truck/Car Hauler. 454 cu. in. gas engine, V-8, automatic.

How much does a Chevy dually 454 limo cost?

GET IT SHIPPED Free Auto Shipping Quote: 1974 Chevrolet Dually Limo with 454 and riding on air has full blown bar hydraulic topper cost $85,000 to build! It’s cool! -Vehicle is on consignment and at our clients home -Please Call

How does the pressure regulator in the TBI work?

A pressure regulator in the TBI keeps fuel available to the injectors at a constant pressure between 62 and 90 kpa. (9 to 13psi.) Fuel in excess of injector needs is returned to the fuel tank by a separate line.

When did the Chevy 4L80E transmission come out?

Unlike the later 4L60E transmission, the 4L80E did not feature a removable bellhousing, but an integrated bellhousing with only the Chevrolet 90 degree engine bolt pattern being available. In 1991 the 4L80E was rolled out in GM trucks, including the Sierra, Silverado, Suburban, etc. as well as the Hummer H1.

Is the 4L80 transmission compatible with the CJ5?

The 4L80 is doubtless a very successful OEM transmission, and a terrific conversion transmission in the right Jeeps and situations. However, with its 26-1/4″ length, it is a longer transmission and is not compatible with short-wheelbase Jeeps such as the CJ5 in any scenario, or CJ7’s if they have a lot of suspension lift.

What kind of case does a GM 4L80E have?

Like the other GM automatics, the 4L80E featured a die-cast aluminum case. Unlike the later 4L60E transmission, the 4L80E did not feature a removable bellhousing, but an integrated bellhousing with only the Chevrolet 90 degree engine bolt pattern being available.

What makes the Chevy 454 7.4L engine unique?

The return of the 231 V-6 to General Motors cars in the mid-1970s proved that fuel efficiency could be achieved in compact engines. But in 1988, Chevrolet introduced Throttle Body Fuel Injection to the 454. It was the same TBI system used on small-block V-8s and the V-6s. Fuel efficiency increased and the TBI system remained until 1995.

What kind of fuel pump does a TBI 454 have?