HOW TO: CHEAP LS AFM/DOD CONVERSION. CHEAP, CHEAPER AND CHEAPEST OPTIONS. CONVERT FOR PERF CAM SWAPS
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- Опубликовано: 28 сен 2023
- WHAT IS THE CHEAPEST WAY TO ELIMINATE DOD/AFM? DO I NEED TO REPLACE ALL THE LIFTERS OR JUST THE DOD LIFTERS? CAN I PERFORM A DOD/AFM CONVERSION MYSELF? WHAT IS INCLUDED IN THE AFM CONVERSION KIT? DO I NEED TO REMOVE THE CYLINDER HEADS? HOW HARD IS IT TO INSTALL A DOD/AFM CONVERSION KIT? DO I NEED TO DELETE DOD TO INSTALL A PERFORMANCE CAM IN MY RACE MOTOR? DOES EVERY LS COME WITH AFM/DOD? CHECK OUT THIS "HOW TO" VIDEO AND FOLLOW ALONG AS I REPLACE THE AFM/DOD LIFTERS, VALLEY COVER (OR JUST CHEAP PLUGS) AND CAMSHAFT IN AN ALL-ALUMINUM LH6 5.3L.
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Maybe a follow up deleting VVT, and converting to 3 bolt cam, timing set, and cam sensor.
I can’t believe how good of shape the top end looked! I love GM small blocks. Best engines ever. (Simplified is the best)
I plug the DOD ports regardless even with the blanking Valley cover as it is a source of oil loss.
I'd use the plugs. Maybe even tap and screw in plugs. That's my opinion.
As usual. Thanks Richard for all the info
Love watching your videos. Learned alot from you and see how you do things. Was able to get my own cam swap done in large part because of watching your videos. Keep it up!! Love that your down the street from me too!
I was going into extreme detail learning how to do this myself as a recent new L83 owner... then today, when i plan on ripping into the car, ypu post this. Divine intervention! Thank you!!!
I used taper roller bearing from an A67 bearing and tapped them in. I also used the GM replacement cover since it has the oil pressure sensor port.
Richard, great video!
Very informative, thanks.
Great video, Richard. Thank you for doing this one!
I cannot give Richard enough praise! Such an awesome channel for everything LS and beyond!
Thank you Richard love the great content
Love the LS videos
Matt happel did a video a few weeks ago showing bearing rollers that fit for plugs and gave the part number for the bearing, sir slop said they fit better than most plugs he used in the past
Awesome video! Please do more how to videos with the LS. I know it's not really your thing but people trust you.
great video thank you for the hard work you do help us
On past LS1 cam swaps I’ve done we used the dowel rod method to pin the lifters up after spinning the cam to push the lifters up. We obviously weren’t changing lifters so we weren’t pulling the heads and we didn’t want the lifters to fall especially on those high mileage motors. I was always on edge hoping the lifters wouldn’t fall being the cars were F-Body and didn’t want to drop the cradle to get the pan off.
Yeah i will be facing that on a swap to the Texas Speed Chopacabra in my LR4 (4.8L LS1 Iron Block). Really don't want to take the heads off at all as they have mls gaskets and im not replacing the lifters anyway
@@shadowopsairman1583 get a piece of dowel rod and cut it in half. You spin the cam to knock the lifters into the trays. Then slide the dowel rods in to keep them from falling down. I've been doing that with an $0.88 piece of dowel rod for over a decade. It works well and doesn't harm anything.
Recently learned of this. Wish I would’ve learned of it before dropping 2 lifters during a cam swap in my G8. Not a fun pan to remove.. never again
definitely an issue on high-mileage motors with worn out trays (that should be replaced)
@@bluecollarhotrods9781 Im fairly certain I know the answer, but ever used dowels to hold up link bar lifters? I've got some in my rig and maybe will be putting a bigger cam it without pulling the heads. I suppose 16 stick magnets would suffice lmfao
thank you for this, will have to do this at some point
What freaking fantastic timing for this! We are literally just putting a 6.2 Denali back together that suffered from a failure even "with the dongle installed". It's terrifying how many of these trucks are out there even well cared for that have the ticking time bomb of AFM/DOD under the hood. Doing it outside the truck is certainly a lot easier to do than when it's between those big honking fenders. However. If you HAD to do it in a truck, how would YOU do it? Pull the cab and work on it in the chassis? Or disassemble the nose and attack it through the front? The kit we prefer is the full boat from Texas Speed, new lifters, gaskets, bolts, "hammer home plugs", no more factory installed GM failures!
We're cab off kind of folks, but maaaaan the internet know it alls HATE it! Great video as always Richard always appreciate you giving some good honest real world experience in these videos Sir!
im doing this on a 5.3 now. When I pulled the head I found a valve with JN Weld on it lol. you are correct who ever pulled the head the first time broke two of the bolts off.
That is the first time that I saw a stock exhaust manifold on an LS come off without any of the bolts snapping off!
I know right! The top end looked super clean too
There was much happiness in the kingdom while removing those and not having to use a welder
For my race car I used the GM cover and LS7 lifters. Additionally I retained the VVT and had the ECU DOD V4 mode turned off. Unfortunately I didn’t know then what I know now… wrong can… whelp you live and learn and will opt for the Truck Norris at a later date.
we always have old tapered roller bearings around the shop and use the rollers to plug the dod vent holes. even if you bought a new $10 bearing you can do 2-3 dod block offs cheap. much less expense that the $20 kits you can buy.
Cheaper DOD Delete would be an A-37 wheel bearing like a Timken37, or WTA-37 wheel bearing; cut the race and use the taper shaped hardened steel bearings, tap them in as well with a hammer. One of your commenters mentioned the A-37 wheel bearing already. An even cheaper option is to tap the holes w/a 3/8-16 tap and use set screws; use a vaccum while tapping to keep the metal from going where you dont want it to go. For good measure you should still use the valley pan w/their o'rings; so yes the ICT cover with its bling affect can still be used
I did the ICT Valley plate on a friend's Gen IV, it's a very nice piece.
4.Great, no dod to worry about
@@shadowopsairman1583 Yup, this was a 2013 4.8L - but someone had stuck a DOD/AFM valley cover on it. Me, I would have made my own plugs and hammered them in. Then stuck the valley cover back on. He was concerned about the looks, even though the intake manifold hides most of it. Just the same, it's a super nice piece from ICT Billet.
2👍's up Richard thank you for sharing 😊
I really cheaped out and went with disabling the DOD on the ecm.
I did too. Haven't had any issues so far.
@@wileycoyote3853y son has done two 1 with range technologies plug in and currently a custom tuned ecm both trucks ran bitchen.
Richard, I don't like just the cover and orings blocking of the oil ports on top. #1 is possible warpage of the plate.#2 oring failure. Piece of mind is plugging them. The nice plate can still be installed. Thanks for all the educational videos.
the factory uses a plate and o rings to oil ports-it works
That thick billet plate will never warp
Another way to stop the oil bleed off on the dod standoffs is to tap them and put shallow pipe plugs and also did away with the vvt. Thats what I did on a 417 build from a L92
The LS Godfather
I have afm on my 6.2 and truthfully I get fantastic gas mileage 356 miles per full tank. I know the gauge is just a reference but still. And don’t worry I’m looking to do the delete very soon!!
Stock cover, unplugged solenoid wire.
An a-37 wheel bearing will give you the plugs to delete several motors.
I went with a harding performance billet valley cover :D
Thanks again
Right on
The valley cover with the solenoids is called a Valve Lifter Oil Manifold or VLOM. Its job is to direct the flow of pressurized engine
oil to the active fuel management valve lifters.
The VLOM doesn't bleed off oil pressure from the lifters to collapse them. The VLOM actually applies pressurized oil to the AFM lifters via the eight towers cast into the block when cylinder deactivation is requested by the ECM.
Using the the small plugs to block the flow from the VLOM is the best (and cheapest) way to deactivate AFM when doing a cam and lifter swap. The VLOM remains in place and is still connected to the ECM. As far as the ECM is concerned the AFM system is still working. If you replace the VLOM with a valley plate with O-rings the ECM will throw a code because it can't see the VLOM solenoids and the check engine light will come on. This can be corrected by reprogramming the ECM but this may cause a problem passing a smog check.
thnx for the info
Yeah but I've seen three come in with engine run ability when it tries to activate the damn lifters it kills the DOD cylinders corresponding injector if not dialed out in software. At least on a stock type vehicle. Had local guy that ALL he did with his HP Tuners was kill GM DO/AFM, never tuned anything. Wouldn't even kill antitheft for people
Your correct. The ECM must be reprogrammed to deactivate DOD/AFM no matter which method is used to keep fuel flowing to all cylinders. @@MonzaRacer
GM Gen 4 4.8 valley cover was $28
Do you have a link to that cover
Why not use plugs with the o ring ict cover over it then its double sealed seals can fail
Sloppy Mechanics uses a cheap angled roller bearing and busts it apart. He then uses the roller bearings to plug the holes.
I have a 71 .030 over Olds 350 non windowed block. Ever think of doing a dyno episode of power add ons? Carb,intake,cams,lifters,stroker kit,nitrous,supercharger. I was thinking of the TorqueStorm supercharger as i want no less than 450 to 500hp. Could ya please do an Olds 350? I NEVER get to see this engine built up. PLEASE do one on it. I need ideas.😁👍
What really is a bummer for some of us , is that if i want to cam or put heads on my ls we need a tuner, or a dyno . I called brian tooley racing talking about the chuck Norris cam .they told me to keep my stock cam . 5 hour round trip to the dyno .thank you for the video .
Buy a HPtuner dongle and tune it, plenty of info out there
Never, looked into this. So I'm guessing I would need a laptop?
@@MrSprintcat Yeah
I did the GM valley cover AND the plugs later on....just because I was worried that the o-rings might fail down the road and start to bleed off oil pressure. Never replaced the oil pump. C'mon now. 154K on donor LH6. Keeping it sloppy.
Alexander Jones. I have 100 thousands miles and my lifters have gave out 4 times already l99 to ls3. DOD. WOULD IT HELP IF I PLUG THOSE HOLES???
@@severogonzaleziii5549 Did you just use the o-ringed valley cover? What lifters gave out? The DOD locations? Less the name brand lifters randomly throughout the engine? Every 25K?!
I used the new dod valley cover. LS7 GM LIFTERS TEXAS SPPED PORTED CHIMED OIL PUMP MY OIL PRESSURE IS FINE 30PSI AT IDLE. WHAT WEIRD IS THAT I WAS NOT GETTING ENOUGH OIL TO MY HEADS ACCORDING TO MY MECHANIC. HAD A BTR STAGE 4 CAM NOW COUKD IT BE THE OIL I WAS USING AS A DAILY DRIVER 15W50 AMSOIL ?
Should I plug the holes under the dod cover. I'm gona pull the engine out and inspect
I would plug them just as insurance.
The plugs would work for me. Then, with the money I saved, I could get some better aftermarket short throw lifters
Those shorts are dirty up to my standards! Excellent
they have a lot of junkyard runs and dyno tests on them, the stains are set in for life
I almost forgot the G4 sbc has the knock sensors where the g1 sbc does, g3 sbc can be converted to it with correct milling procedures
I'm surprised you didn't replace the cam bearings ,oil pump and crank gear
no need
What about the oil bypass valve? Do I need it? Thanks
My vote goes to billety goodness. But whatever gets the job done, gets the job done. 😎
On a controlled repeatable trip, cruise control, same route, same destination, there is a huge difference in mpg. In part from the transmission change from the 4L60, in part from DoD. My L59 gets (got) 18.5 mpg with cruise at 74 mph over the course of a tank. I am not talking about a vacuum display, but distance over gallons put in the tank. And 25 mpg in a 2019 Tahoe with whatever that 5.3 is called. I observed something happening, that is predicted to happen.
your 2019 L83 is Direct Injected-completely different motor
@@richardholdener1727 Right, and it is more efficient by the very definition of the word.
Dillion is that 25 mpg with the DOD active?
@@slalomking Yes. Variable cam timing is also a wonderful thing.
224,000 miles original engine custom tune AFM disabled
If you don’t turn off afm will it make the lifter noisy ?
Hey richard I just watched your video on afr and timing, and it got me wondering. Have you done a test or have any data on the effect incremental changes in compression has on power? Im building a gen 3 lm7, and im putting flat top pistons in it to raise the compression, but i also know milling the head/block will also raise compression. I think it would be a very interesting test to see if there are diminishing returns to milling your heads to raise compression, or to see what the limit to shortening the head is. I assume there will come a point that the stock push rod length comes into consideration, and maybe piston to valve clearance on bigger cams?
milling the heads is limited to deck thickness and intake fitment (bolt hole alignment), power gains are in the order of 3-4% increase per 1 full point
Did all 2007 5.3 Yukon engines have AFM? Mine is LMG engine order code. Bought it online, still awaiting delivery.
big bang magnum! big bang magnum! big bang magnum!
I did the vlom delete plate and the plugs but I'm paranoid
LS4 cars and the c6 were the only cars that saw good economy from the Dod
Well since Brandon Furchas gave me a deal last year on DOD delete gasket kit with gm plate and new hv oil pump i intend to double down with plugs and flare GM plate for eye candy/use vlom for target practice.
I'm gonna do Elgin 1839 cam.
Hey man would it be better to install plus AND valley cover?
So as a everyday driver, I could just put the plugs in and it wouldn't deactivate the cylinders. Because I don't really wanna go all in and do camshaft and all that.
How are the pushrods the same length if those dod lifters are so long?
Plugg it
Does ICT make a kit for the 5.3l gen4 lc9 engine???
We just did this and are experiencing low oil pressure issues. Lost on what is going on. Had 60 lbs at start up and drove it 2 miles. Dropped to 10 lbs. Getting lifter noise now.....
you have an oil leak somewhere
Plugs are superior.
I'd love to see a video where you just change the lifters in a dod LS run it an see if you get misfires like everyone says. So dod cam ls7 lifters an turn dod off in the tune.
dod cam has lobes specific to the DOD-why would you change the lifters and not the cam?
@@richardholdener1727 I'd like to see it in a video that way I can show to my customers when the want to argue with me. I get the same response I've had it turned off in the ecm an it runs fine your just trying to get 400 more buck out of me for the cam.. see where I'm going. I get it but if I can send them a video of it causing miss fires maybe just maybe they'll believe me if they can see it. I live in missouri you know the show me state
what about plugs?
@@richardholdener1727 ??plugs??
Can I use just the plugs?
lifters in, old cam out and new cam back in what the frig man, mr opposite
I'm just wondering if I wanted to do this on a a ultra budget if I plugged the towers what's stopping me from just reusing the valley cover plate to save that little extra trying to piece together my own "kit"
you can do that
I'm aware that the stock AFM cam is different then a non AFM and just installing regular lifters will cause the engine to run poorly. I haven't been able to find out what specifically is different with the AFM cam and why there needs to be a difference.
The AFM cams have more lift on the lobes that use the afm lifters than the lobes that use regular lifters. So if you put regular lifters in them, you will have 4 cylinders with more lift and duration than the 4 non afm cylinders creating a power imbalance.
@@THEFERMANATOR Thanks. So the AFM lifters are more " squishy " in normal operation and the lobe has higher lift / duration to compensate?
Okay, your custom VLOM replacement cover does not have the oil pressure sensor position on it? Where would you relocate the oil pressure sensor to? If you delete the AFM system do you have to reprogram the ECM and BCM?
it has a bolt on adapter for the sensor
DOD.
Disappointment On Demand.
When installing the new lifter which way do you recommend the oil hole in the side of the lifer to face ? I face mine towards the rear.
doesn't matter-but I like to have them face all the same direction, but have installed them randomly as well-it all works
Thanks @@richardholdener1727
Have you ever witnessed rod knock from high psi of boost on e85? If so how much was it and how did you remedy that? Thanks
are you talking about detonation-then the reason is too much timing or not enough fuel or inlet temp is too high
Can you plug the ports and put a cover on for 2X the block off? Or do the plugs not sit flush?
the plugs are flush
I would drop in the plugs cause every penny
Adds up
I recently sent my 2009 avalanche to do a delete with a kit off amazon had no camshaft says the kit "not needed" now my avalanche is in 4 cil mode havent donde the reprograming on the ecu any ideas ???
had no camshaft?
Hey Richard great video
So iv seen or read u can delete AFM with a tune im guessing this isn’t true after watching ur video.
I have 2015 Silverado with the L83 and had lifter fail with 39,000 miles. I do get great fuel mileage seen 24.8 on highway and get 15 mpg average.
Would it be the same process to delete my engine than urs.
Please let me know
Great stuff as always
Thank you
same basic procedure
@@richardholdener1727
Thanks Richard
Keep up the great work always fun seeing what ur working on.
is it the same plate/plugs for the newer LT1 engine?
yes
how did you pull the cam out with the lifters in?
lifters are held up out of the way (after spinning cam) by the lifter trays
@@richardholdener1727 thank you for the answer.
Do you have to replace the cam when doing this? I got a 5th gen I was just for now wanting to do intake headers and exhaust
YES IF YOU HAVE A DOD CAM
L76 here. If I turn off DOD in the ecu do I still need to plug the oil passages?
To delete the system yes. Lifters, Plug holes or swap to the appropriate valley cover and ecm/pcm tuning is required.
As I recall there is a bleed off valve in the oil sump in DOD/AFM engines that has to be blocked off as well. Normal non DOD/AFM engines don't have that bleed off valve in the oil sump
Don't forget what sensor adapter? I don't see oil pressure sender on the valley cover.
L86 must be way different than l33
ICT supplied a billet sensor mount (shown in video) that bolts to the main cover plate
l86 is DI, AFM and VVT
so...a 2012 Escalade with the 6.2 - to eliminate the lifter 'time bomb' issue but no cam change...just pull the heads, replace the lifters with standard units...and drive on, correct?
what is a lifter time bomb
@@richardholdener1727 I just assumed that's what folks call the DOD lifters that haven't yet failed
Yo!
Any plans to do an old ram v10?
no, but maybe a Ford V10
Do you need to reprogram the computer or will it run ok without a new tune?
needs tune
Richard where do u buy those plugs?
BTR
@richardholdener1727 wow I didn't know BTR CARRIED THAT. DO THEY HAVE A SPECIFIC PART ###
Did you put in the plugs before the billet valley cover?
Looking at both, only one is used. The billet cover has pockets for o rings . The plugs would be used with a stock AFM cover.
no need to do that
I did a afm delete and now have low oil pressure but was perfectly fine before this I delete the bypass valve in the oil pan put the rivets in the towers and have a non afm vlom to help seal it don’t know what’s going on please help
the bypass valve is your issue
The one in the oil pan? I was told to block it off thought it would of helped
So should I put the bypass valve back in?
@@JAndJ479 did you figure it out?
No never solved the problem
Im happy to see im not the only one with a hand wiping on my pants problem😂🤣
I do it too. I imagine it's pretty common.
Problem? If those stains could talk!
I'm glad my stains can't talk. OK, that sounded strange. 😛
@@richardholdener1727 the problem is I need to have a blanket to get in anyone's car cause it's on my hips and ass.
Didnt change oil pump? I dont want to pull my motor to change mine.. is it worth changing to high psi oil pump?
don't need high psi pump
Where did you purchase the lifter kit at?
BTR-per the vide
@@richardholdener1727 thank you
Where can I buy the plugs?
btr, texas speed, scoggin dickey etc...
Hey Richard I was just watching your other video about camshafts for the 4.8ls. Will my truck stall out if I have a sloppy stage 2 cam and stock convertor. Blew my 5.3 and got this 4.8 sitting on the side, figured slap a cam in it to make up for the displacement loss.
it will be very soft down low and not idle great on the 4.8l, because the cam is big
@richardholdener1727 thankyou very much Richard. Appreciate it. This is My first ever engine rebuild or Internal work. So is my best bet for power and driveability the Truck Norrris NSR. Completely stock exhaust, manifolds, intake, and convertor? Thanks again man quick reply helped a lot. Need my truck back on the road asap and without your knowledge I'd have bought that sloppy stage 2 and been bent over when my truck doesn't run goof.
How the hell did you get the gasket to stay in place on the valley cover?
Grease 😂
it was located securely in the o ring groove
Race car 😉😉😉😉🍺
Anyone have a video on converting knock sensors that sit on top of the motor to knock sensors that sit on the side? I’ve got a factory harness in an older 99-06 and about to build a boost ready aluminum 5.3..
if you have a harness and block designed for the new sensor position, it should just plug in
@@richardholdener1727 my truck came with the iron 4.8 block, knock sensors up top. I’m building an aluminum 5.3 with knock sensors on the side.
@@richardholdener1727 I hope I explained my situation properly. If you have any knowledge of converting a one wire knock sensor, NBS Chevy, to a two wire knock sensor, NNBS Chevy, I’m all ears. Picking my bottom end up tomorrow. Thanks Richard
plugs because if inspected , can not see it.
Shouldn't you do the cam swap before you install the lifters?🤷♂️
you can