The 1/2 inch Allen bolt is factory on the driver side of the motor (I’m a GM tech) lifters go on them all the time and if the lifter goes so does the came
Just sitting on an engine stand loosely together. I plan on putting a cam in it to delete the DOD and variable valve timing. Most likely going to be an expensive build, so whatever it goes in has to be worth the money. Thanks for watching!
I believe it has 130k on it, but truly don’t know. I was honestly surprised it wasn’t worse. I’m guessing the lifter spun in those stupid plastic holders. Regardless it’s getting a cam.
L83 Active Fuel Management (AFM) has 2 modes. 8 cylinder or 4 cylinder. Half if the cylinders have collapsible lifters ( 1,7,4,6). On a L84, all lifters are collapsible style. There are 17 different modes and firing paterns. Another difference, L84 has automatic start-stop ( engine shuts off at red lights). L83 doesn't have that feature
No idea, I doubt it. I’m sure the computer will alter the timing for any sort of detonation. Guaranteed 90% of the people driving silverado’s with these motors can’t afford 91 and putting the cheapest gas they can in. That includes me, if I had one that ran.
L84 has "Dynamic Fuel Management" where as L83 has "Active Fuel Management", both systems allow for the engine to run on 4, 6 or 8 cylinders for fuel economy. The old L83 AFM had been plagued with issues where as the L84 DFM has been pretty reliable. The are 2 completely different systems that do the same thing, skip fire. If you are putting it in an older car, just delete all of the DFM parts, 5.3s are known for running a few hundred thousand miles if maintained.
I am not 100% sure what I plan on doing with it yet, but definitely deleting the fuel management and VVT. Due to the cost of building it, I’m waiting for something half decent to stick it in. I had a vehicle in mind that would have been my wifes (which would be badass in my opinion), but now she’s kinda gone a different route.
How can you say your suspicion was correct when the previous owner literally told you he had a lifter replaced (on the side with the new head gasket) and when a second lifter failed he pulled the engine lol.
The 1/2 inch Allen bolt is factory on the driver side of the motor (I’m a GM tech) lifters go on them all the time and if the lifter goes so does the came
Luckily I plan on getting rid of all that garbage. Thanks for watching!
What did you end up doing with it?
Just sitting on an engine stand loosely together. I plan on putting a cam in it to delete the DOD and variable valve timing. Most likely going to be an expensive build, so whatever it goes in has to be worth the money. Thanks for watching!
interesting motor, for sure. super clean, too. i don't remember you mentioning the mileage on it.
I believe it has 130k on it, but truly don’t know. I was honestly surprised it wasn’t worse. I’m guessing the lifter spun in those stupid plastic holders. Regardless it’s getting a cam.
im looking into buying an l84 good to see
Hopefully it helped in some way. Thanks for watching!
L83 Active Fuel Management (AFM) has 2 modes. 8 cylinder or 4 cylinder. Half if the cylinders have collapsible lifters ( 1,7,4,6).
On a L84, all lifters are collapsible style. There are 17 different modes and firing paterns.
Another difference, L84 has automatic start-stop ( engine shuts off at red lights). L83 doesn't have that feature
Sounds like a bunch of nonsense that I will be deleting. Thanks for watching!
Do you need to run 91 on these new L84 engines due to the compression ratio?
No idea, I doubt it. I’m sure the computer will alter the timing for any sort of detonation. Guaranteed 90% of the people driving silverado’s with these motors can’t afford 91 and putting the cheapest gas they can in. That includes me, if I had one that ran.
L84 are rated for 87
Yes the 13 mil Allen is stock on the lh head
Seems odd, I don't understand why they would use 1 different style bolt. Thanks for watching!
Just did all 16 lifters on my l84 LT it was a lot different lol
Yeah, I was a bit taken away with the technology in these motors. A bunch of nonsense that can be deleted. Thanks for watching!
Was it different than motor he pulled apart?
L84 has "Dynamic Fuel Management" where as L83 has "Active Fuel Management", both systems allow for the engine to run on 4, 6 or 8 cylinders for fuel economy. The old L83 AFM had been plagued with issues where as the L84 DFM has been pretty reliable. The are 2 completely different systems that do the same thing, skip fire. If you are putting it in an older car, just delete all of the DFM parts, 5.3s are known for running a few hundred thousand miles if maintained.
I am not 100% sure what I plan on doing with it yet, but definitely deleting the fuel management and VVT. Due to the cost of building it, I’m waiting for something half decent to stick it in. I had a vehicle in mind that would have been my wifes (which would be badass in my opinion), but now she’s kinda gone a different route.
The L84 has 17 different combinations. It even run on one cylinder.
Everybody is tearing down 5.3 L whatever engines. The little engine that couldn't.
GM really screwed up with the stupid AFM.... Luckily, it's all going to go with what I have planned for it. Thanks for watching.
How can you say your suspicion was correct when the previous owner literally told you he had a lifter replaced (on the side with the new head gasket) and when a second lifter failed he pulled the engine lol.
People say a lot of things. Thanks for watching!