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.
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.
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
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.
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.
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.
What kind of intake do I need for a TBI?
But if your upgrading cam and especially with larger throttle body (cheaper/easier to bore the aluminum intake) change to the edelbrock 3764 intake. Its got to be 50lbs lighter than that iron chunk which will make putting it back on that engine MUCH easier.